Anatomy Exam 5 Practice Quiz

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  • 1/50 Questions

    The ___ extends between the thoracic diaphragm and the pelvic diaphragm.

    • Pelvic cavity
    • Greater sac
    • Abdominopelvic cavity
    • Lesser sac
    • Supracolic compartment
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About This Quiz

In this Anatomy Exam 5 Practice Quiz, we’ll be looking at more of the processes that go on beneath the surface of our skin, which help to keep our bodies going. What can you tell us about such topics as the thoracic diaphragm, the abdominal cavity and the spermatic cord?

Anatomy Exam 5 Practice Quiz - Quiz

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  • 2. 

    What forms the floor of the abdominal cavity? (two answers)

    • It is continuous with the pelvic cavity

    • The anterior superior iliac spine

    • The pubic symphysis

    • The pelvic inlet

    • The pelvic diaphragm

    Correct Answer(s)
    A. It is continuous with the pelvic cavity
    A. The pelvic inlet
    Explanation
    The floor of the abdominal cavity is formed by two structures: it is continuous with the pelvic cavity and the pelvic inlet. The pelvic cavity is located below the abdominal cavity and is connected to it, forming the floor. The pelvic inlet is the upper opening of the pelvis, and it also contributes to forming the floor of the abdominal cavity. These two structures work together to create the boundary and support for the abdominal cavity.

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  • 3. 

    The right costal margin forms the superior border of which?

    • The umbilical region

    • The right hypogastric region

    • The right lumbar region

    • The right inguinal region

    • The epigastric region

    Correct Answer
    A. The right lumbar region
    Explanation
    The right costal margin forms the superior border of the right lumbar region. The costal margin is the lower edge of the ribcage, and it extends from the seventh rib to the tenth rib. The right lumbar region is located on the right side of the abdomen, between the right costal margin and the right iliac crest.

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  • 4. 

    Which is not in the right lower quadrant?

    • Cecum

    • Ascending colon

    • Descending colon

    • Enlarged uterus

    • Ovary

    Correct Answer
    A. Descending colon
    Explanation
    The descending colon is not in the right lower quadrant. The cecum, ascending colon, and enlarged uterus are all located in the right lower quadrant. The ovary is located in the pelvic region, which is not specified in the question. Therefore, the descending colon is the only option that is not in the right lower quadrant.

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  • 5. 

    At what vertebral level does the transtubercular plane cross the body?

    • L3

    • L4

    • L5

    • The sacrum

    Correct Answer
    A. L5
    Explanation
    The transtubercular plane is a horizontal plane that passes through the iliac tubercles, which are bony prominences on the pelvis. It is commonly used as a reference point in abdominal imaging. The sacrum is located below the iliac tubercles, so it is not crossed by the transtubercular plane. Among the given options, L5 is the correct answer because it is the vertebral level that the transtubercular plane crosses the body.

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  • 6. 

    Which is the most superficial?

    • Parietal paritoneum

    • Deep membranous layer

    • Deep investing fascia

    • Intermediate investing fascia

    • Endabdominal fascia

    Correct Answer
    A. Deep membranous layer
    Explanation
    The most superficial layer among the options provided is the deep membranous layer. This layer is located closer to the surface compared to the other options such as the parietal paritoneum, deep investing fascia, intermediate investing fascia, and endabdominal fascia.

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  • 7. 

    Superior to the arcuate line, which is true?

    • The external oblique aponeurosis splits to invest rectus abdominis

    • The rectus sheath passes anterior to rectus abdominis

    • The internal oblique aponeurosis splits to invest rectus abdominis

    • The transversalis fascia passes immediately deep to rectus abdominis

    • The subcutaneous tissue is thicker than it is inferior to the arcuate line.

    Correct Answer
    A. The internal oblique aponeurosis splits to invest rectus abdominis
    Explanation
    The internal oblique aponeurosis splits to invest the rectus abdominis. This means that the fibers of the internal oblique muscle separate to form a sheath that surrounds and supports the rectus abdominis muscle. This arrangement helps to provide stability and strength to the abdominal wall.

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  • 8. 

    Which vessels are contained in the rectus sheath? (more than one answer)

    • Superior mesenteric artery

    • Superior mesenteric vein

    • Superior epigastric artery

    • Superior epigastric vein

    • Lymphatic

    Correct Answer(s)
    A. Superior epigastric artery
    A. Superior epigastric vein
    A. Lymphatic
    Explanation
    The vessels contained in the rectus sheath are the superior epigastric artery, superior epigastric vein, and lymphatic vessels.

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  • 9. 

    Which is the remnant of the umbilical vein, which i enclosed by the falciform ligament?

    • The median umbilical folds

    • The medial umbilical folds

    • The lateral umbilical folds

    • The round ligament

    • The umbilical fossae

    Correct Answer
    A. The round ligament
    Explanation
    The round ligament is the remnant of the umbilical vein that is enclosed by the falciform ligament.

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  • 10. 

    All of the structures that pass from the abdominal region to the thigh or groin pass through ___.

    • The deep inguinal ring

    • The superficial inguinal ring

    • The inguinal canal

    • The myopectineal orifice

    • The femoral sheath

    Correct Answer
    A. The myopectineal orifice
    Explanation
    All of the structures that pass from the abdominal region to the thigh or groin pass through the myopectineal orifice. The myopectineal orifice is a triangular-shaped opening located in the lower abdominal wall, formed by the fusion of various muscles and ligaments. It serves as a pathway for structures such as blood vessels, nerves, and the spermatic cord or round ligament to pass from the abdomen into the thigh or groin region. The deep inguinal ring, superficial inguinal ring, inguinal canal, and femoral sheath are all related to the inguinal region, but they do not specifically serve as the passage for structures between the abdominal region and the thigh or groin.

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  • 11. 

    A/an ___ follows the path of the spermatic cord and can pass into the scrotum or labium majus.

    • Direct inguinal hernia

    • Indirect inguinal hernia

    • Femoral hernia

    • Umbilical hernia

    Correct Answer
    A. Indirect inguinal hernia
    Explanation
    An indirect inguinal hernia follows the path of the spermatic cord and can pass into the scrotum or labium majus. This type of hernia occurs when a portion of the intestine protrudes through the deep inguinal ring, which is an opening in the abdominal wall. It then descends through the inguinal canal and may extend into the scrotum or labium majus. This type of hernia is more common in males and is typically congenital, meaning it is present from birth.

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  • 12. 

    Which is derived from transversalis fascia?

    • Internal spermatic fascia

    • Cremasteric fascia

    • External spermatic fascia

    • Dartos muscle

    • Cremaster muscle

    Correct Answer
    A. Internal spermatic fascia
    Explanation
    The internal spermatic fascia is derived from the transversalis fascia. The transversalis fascia is a layer of connective tissue that lines the abdominal cavity. It covers the internal organs and provides support and protection. The internal spermatic fascia is a continuation of the transversalis fascia that surrounds the spermatic cord. It helps to enclose and protect the structures within the spermatic cord, including the vas deferens and blood vessels.

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  • 13. 

    Sperm leave the rete testes through the ___.

    • Epididymus

    • Vas deferens

    • Efferent ductules

    • Seminiferous tubules

    • Tunica vaginalis

    Correct Answer
    A. Efferent ductules
    Explanation
    The efferent ductules are responsible for carrying sperm out of the rete testes. They connect the rete testes to the epididymis, where sperm mature and are stored before ejaculation. The other options, such as the vas deferens and seminiferous tubules, are involved in the transportation and production of sperm, but they are not directly responsible for carrying sperm out of the rete testes. The tunica vaginalis is a membrane that surrounds the testes and does not play a role in the transportation of sperm.

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  • 14. 

    Pain in the __ is often referred to the dermatomes of the spinal ganglia providing sensory fibers.

    • Serous membrane

    • Parietal peritoneum

    • Visceral peritoneum

    • Peritoneal cavity

    • Mesentery

    Correct Answer
    A. Visceral peritoneum
    Explanation
    The visceral peritoneum is the correct answer because it is the layer of the peritoneum that covers the organs in the abdominal cavity. Pain in this area is often referred to the dermatomes of the spinal ganglia providing sensory fibers, meaning that the nerves that transmit pain signals from the visceral peritoneum follow specific patterns along the spinal cord.

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  • 15. 

    There is no mesentery associated with this.

    • Appendix

    • Cecum

    • Small intestine

    • Transverse colon

    • Duodenojejunal junction

    Correct Answer
    A. Cecum
    Explanation
    The given statement implies that there is no mesentery associated with the cecum. The mesentery is a fold of tissue that attaches organs to the abdominal wall and provides support and blood supply. Therefore, the cecum does not have this structure associated with it.

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  • 16. 

    Where does the greater omentum attach posteriorly?

    • The posterior abdominal wall

    • The transverse colon and its mesentery

    • The pancreas and the liver

    • The kidneys

    • The greater curvature of the stomach

    Correct Answer
    A. The transverse colon and its mesentery
    Explanation
    The greater omentum, a fatty apron-like structure in the abdomen, attaches posteriorly to the transverse colon and its mesentery. This attachment helps to support and protect the abdominal organs. The omentum also plays a role in immune response and can help isolate and contain infections or inflammation within the abdomen.

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  • 17. 

    The gastrohepatic ligament and the hepatoduodenal ligament make up the:

    • Falciform ligament

    • Round ligament

    • Greater omentum

    • Lesser omentum

    • Gastrocolic ligament

    Correct Answer
    A. Lesser omentum
    Explanation
    The correct answer is lesser omentum. The gastrohepatic ligament and the hepatoduodenal ligament are both components of the lesser omentum. The lesser omentum is a double layer of peritoneum that connects the stomach and the duodenum to the liver. It helps to support and stabilize these organs, as well as providing a pathway for blood vessels and other structures to pass between them. The falciform ligament, round ligament, greater omentum, and gastrocolic ligament are all separate structures that have different functions within the abdominal cavity.

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  • 18. 

    The greater omentum is also known as the ___ ligament.

    • Gastrophrenic

    • Gastrosplenic

    • Gastroduodenal

    • Gastrocolic

    • Gastrohepatic

    Correct Answer
    A. Gastrocolic
    Explanation
    The greater omentum is a fatty apron-like structure that hangs down from the stomach and covers the intestines. It is attached to the colon, specifically the transverse colon, forming a connection between the stomach and the colon. This attachment is known as the gastrocolic ligament.

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  • 19. 

    The transverse mesocolon provides a boundary between

    • The greater and lesser peritoneal sacs

    • The right and left infracolic spaces

    • The supracolic and infracolic compartments

    • The lesser sac and the paracolic gutters

    Correct Answer
    A. The supracolic and infracolic compartments
    Explanation
    The transverse mesocolon is a double layer of peritoneum that attaches the transverse colon to the posterior abdominal wall. It divides the abdominal cavity into two compartments: the supracolic compartment, located above the transverse mesocolon, and the infracolic compartment, located below the transverse mesocolon. Therefore, the transverse mesocolon provides a boundary between the supracolic and infracolic compartments.

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  • 20. 

    The ligament of Treitz has which of the following functions (two answers)

    • Helps to act as the upper esophageal sphincter

    • Helps to act as the lower esophageal sphinctor

    • Delineates the end of the stomach and beginning of the duodenum

    • Delineates the end of the jejunum and the beginning of the ileum

    • Delineates the end of the duodenum and the beginning of the jejunum

    Correct Answer(s)
    A. Helps to act as the lower esophageal sphinctor
    A. Delineates the end of the duodenum and the beginning of the jejunum
    Explanation
    The ligament of Treitz helps to act as the lower esophageal sphincter, which is a muscular ring that prevents the backflow of stomach acid into the esophagus. Additionally, it delineates the end of the duodenum and the beginning of the jejunum, marking the transition between the first and second parts of the small intestine.

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  • 21. 

    Which structure passes through the diaphragm at T10?

    • The inferior vena cava

    • The esophagus

    • The aorta

    Correct Answer
    A. The esophagus
    Explanation
    The structure that passes through the diaphragm at T10 is the esophagus. The esophagus is a muscular tube that connects the throat to the stomach, and it passes through an opening in the diaphragm called the esophageal hiatus. This allows food and liquids to pass from the throat into the stomach for digestion. The inferior vena cava is a large vein that carries deoxygenated blood from the lower body to the heart, and the aorta is the main artery that carries oxygenated blood from the heart to the rest of the body.

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  • 22. 

    The ___ is formed by the cricopharyngeus muscle.

    • Aortic constriction

    • Diaphragmatic constriction

    • Bronchial constriction

    • Cervical constriction

    Correct Answer
    A. Cervical constriction
    Explanation
    The cervical constriction is formed by the cricopharyngeus muscle. This muscle is located in the neck region, specifically in the area of the cervical vertebrae. It forms a constriction or narrowing in the throat, which helps regulate the passage of food and liquids from the pharynx to the esophagus during swallowing. This constriction prevents the backflow of food and liquids into the throat and helps direct them towards the stomach.

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  • 23. 

    During peristalsis, which muscles shorten the stomach bottom to top?

    • Circular muscles

    • Longitudinal muscles

    • Rugae

    • Pyloric sphincter

    • Pyloric antrum

    Correct Answer
    A. Longitudinal muscles
    Explanation
    The correct answer is longitudinal muscles. During peristalsis, the longitudinal muscles in the stomach contract and shorten, causing the stomach to move in a wave-like motion from the bottom to the top. This contraction helps in the mechanical digestion of food and aids in pushing the food towards the small intestine for further digestion and absorption.

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  • 24. 

    The posterior surface of the stomach:

    • Is directly touching the pancreas

    • Forms the posterior wall of the greater sac

    • Forms the anterior wall of the omental bursa

    • Forms the posterior wall of the omental bursa

    • Is posterior to the spleen

    Correct Answer
    A. Forms the anterior wall of the omental bursa
    Explanation
    The correct answer is "forms the anterior wall of the omental bursa." The omental bursa is a peritoneal sac located behind the stomach. The posterior surface of the stomach forms the anterior wall of this sac, separating it from the pancreas, spleen, and other structures.

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  • 25. 

    Which artery branches directly from the celiac trunk?

    • Right gastric artery

    • Left gastric artery

    • Right gastro-omental artery

    • Left gastro-omental artery

    • Gastroduodenal artery

    Correct Answer
    A. Left gastric artery
    Explanation
    The left gastric artery branches directly from the celiac trunk.

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  • 26. 

    What attaches to the anterior margin of the pancreas?

    • Mesentery

    • Transverse mesocolon

    • Duodenum

    • Stomach

    • Short gastric veins

    Correct Answer
    A. Transverse mesocolon
    Explanation
    The transverse mesocolon attaches to the anterior margin of the pancreas. The transverse mesocolon is a fold of peritoneum that connects the transverse colon to the posterior abdominal wall. It helps to support and stabilize the pancreas in its anatomical position.

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  • 27. 

    The sphinctor of Oddi

    • Controls the flow of pancreatic juice into the minor duodenal papilla

    • Controls the flow of bile and pancreatic juice into the duodenum

    • Controls the flow of bile into the hepatopancreatic ampulla

    • Controls the flow of chyme from the stomach into the duodenum

    Correct Answer
    A. Controls the flow of bile and pancreatic juice into the duodenum
    Explanation
    The sphincter of Oddi is a muscular valve located in the duodenum. Its main function is to regulate the flow of bile and pancreatic juice into the duodenum. Bile is produced by the liver and stored in the gallbladder, while pancreatic juice is produced by the pancreas. Both substances are essential for the digestion and absorption of fats and nutrients in the small intestine. Therefore, the sphincter of Oddi plays a crucial role in ensuring that these digestive fluids are released into the duodenum at the appropriate time and in the correct amounts.

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  • 28. 

    The common hepatic duct becomes the common bile duct

    • Where the right and left hepatic ducts join

    • When it is joined by the main pancreatic duct

    • When it reaches the major duodenal papilla

    • When it is joined by the cystic duct

    Correct Answer
    A. When it is joined by the cystic duct
    Explanation
    When the common hepatic duct is joined by the cystic duct, it becomes the common bile duct. The cystic duct is the duct that connects the gallbladder to the common hepatic duct. Once the two ducts join, the common bile duct is formed, which carries bile from the liver and gallbladder to the small intestine.

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  • 29. 

    When a patient is standing upright, the most superior part of the liver is ___

    • In the 4th intercostal space

    • At the level of the T5 vertebra

    • In the 5th intercostal space

    • At the level of the T6 vertebra

    Correct Answer
    A. In the 5th intercostal space
    Explanation
    The most superior part of the liver is located in the 5th intercostal space. This means that when a patient is standing upright, the upper edge of the liver can be found in the space between the 5th and 6th ribs.

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  • 30. 

    ___ links the right and left sagittal fissures of the liver.

    • Portal vein

    • Hepatic artery

    • Hepatic nerve plexus

    • Gall bladder fossa

    • Porta hepatis

    Correct Answer
    A. Porta hepatis
    Explanation
    The porta hepatis is the correct answer because it is the area on the liver where the portal vein, hepatic artery, and bile duct enter and exit. It acts as a gateway for these structures to enter and exit the liver, connecting the right and left sagittal fissures. The portal vein brings nutrient-rich blood from the digestive organs to the liver, the hepatic artery supplies oxygenated blood to the liver, and the bile duct carries bile produced by the liver to the gallbladder and small intestine.

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  • 31. 

    What separates the caudate lobe from the quadrate lobe?

    • The falciform ligament

    • The coronary ligament

    • Porta hepatis

    • Left sagittal fissure

    • The right triangular ligament

    Correct Answer
    A. Porta hepatis
    Explanation
    The porta hepatis is the correct answer because it is the anatomical structure that separates the caudate lobe from the quadrate lobe. The porta hepatis is a region on the undersurface of the liver where the hepatic artery, hepatic portal vein, and common bile duct enter and exit the liver. It acts as a dividing line between the two lobes. The falciform ligament, coronary ligament, left sagittal fissure, and right triangular ligament are not directly involved in separating these lobes.

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  • 32. 

    The portal vein: (two answers)

    • Supplies less blood to the liver than the hepatic artery

    • Supplies blood to non-parenchymal structures

    • Carries nutrients except lipids

    • Supplies the parenchyma of the liver

    • Is a branch of the celiac trunk

    Correct Answer(s)
    A. Carries nutrients except lipids
    A. Supplies the parenchyma of the liver
    Explanation
    The portal vein carries nutrients except lipids because lipids are primarily transported through the lymphatic system. It supplies the parenchyma of the liver, which refers to the functional tissue of the organ.

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  • 33. 

    The flow of  bile goes from the bile canaliculi to

    • The interlobar biliary ducts

    • The collecting bile ducts

    • The right and left hepatic ducts

    • The common hepatic duct

    • The bile duct

    Correct Answer
    A. The interlobar biliary ducts
    Explanation
    The interlobar biliary ducts are the correct answer because they are the first ducts that receive bile from the bile canaliculi. Bile canaliculi are small ducts located between liver cells that collect bile produced by the liver. The interlobar biliary ducts then carry the bile to the next set of ducts, which are the collecting bile ducts. From there, the bile continues to flow through the right and left hepatic ducts, then into the common hepatic duct, and finally into the bile duct, which leads to the small intestine.

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  • 34. 

    What supplies the proximal bile duct?

    • Left hepatic artery

    • Right hepatic artery

    • Cystic artery

    • Portal vein

    Correct Answer
    A. Cystic artery
    Explanation
    The cystic artery supplies the proximal bile duct. The cystic artery is a branch of the right hepatic artery, which provides blood supply to the gallbladder and surrounding structures. The proximal bile duct refers to the section of the bile duct closer to the gallbladder. Therefore, the cystic artery is responsible for providing blood supply to this area.

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  • 35. 

    Which surrounds the kidneys and their vessels and extends into the renal sinuses?

    • Paranephric fat

    • Renal fascia

    • Perinephric fat

    • Pararenal fat body

    Correct Answer
    A. Perinephric fat
    Explanation
    Perinephric fat is the correct answer because it surrounds the kidneys and their vessels and extends into the renal sinuses. This fat provides protection and insulation to the kidneys, helping to anchor them in place and cushion them from any external forces. It also helps to maintain the position of the kidneys within the abdominal cavity.

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  • 36. 

    From he renal papillae, the urine flows into the

    • Distal convoluted tubule

    • The minor calyces

    • The loop of Henle

    • The renal pyramids

    • The greater calyces

    Correct Answer
    A. The minor calyces
  • 37. 

    The blood supply to the kidneys flows from the renal artery to the

    • Interlobar arteries

    • Arcuate arteries

    • Afferent arterioles

    • Nephron

    • Segmental arteries

    Correct Answer
    A. Segmental arteries
    Explanation
    The blood supply to the kidneys flows from the renal artery to the segmental arteries. The segmental arteries are the branches of the renal artery that further divide into interlobar arteries, which then supply blood to the renal cortex. From there, the blood flows into the arcuate arteries, which form a network along the boundary between the cortex and medulla. The afferent arterioles then branch off from the arcuate arteries and supply blood to the nephrons, the functional units of the kidneys. Therefore, the segmental arteries are the correct answer as they are the initial branches of the renal artery in the blood supply to the kidneys.

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  • 38. 

    Which is true?

    • The right adrenal gland is pyramidal and the left adrenal gland is sickle shaped

    • The left adrenal gland is pyramidal and the right adrenal gland is sickle shaped

    • The left renal artery is longer than the right

    • The renal sinus is where urine collects before entering the ureter

    • The left kidney is superior to the right kidney

    Correct Answer(s)
    A. The right adrenal gland is pyramidal and the left adrenal gland is sickle shaped
    A. The left kidney is superior to the right kidney
    Explanation
    The answer is correct because the right adrenal gland is indeed pyramidal in shape, while the left adrenal gland is sickle-shaped. Additionally, the left kidney is positioned slightly higher in the abdominal cavity than the right kidney, making it superior to the right kidney.

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  • 39. 

    Out of these, which has the greatest number?

    • Right superrenal veins

    • Left superrenal veins

    • Inferior suprarenal arteries

    • Superior suprarenal arteries

    • Middle suprarenal arteries

    Correct Answer
    A. Superior suprarenal arteries
    Explanation
    The superior suprarenal arteries have the greatest number compared to the other options provided. This can be inferred from the term "superior," which suggests a higher or greater position or quantity. Therefore, the superior suprarenal arteries have more arteries compared to the right and left superrenal veins, as well as the inferior and middle suprarenal arteries.

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  • 40. 

    The hepatopancreatic ampulla is in the __ part of the duodenum

    • 1st (superior)

    • 2nd (descending)

    • 3rd (horizontal

    • 4th (ascending)

    Correct Answer
    A. 2nd (descending)
    Explanation
    The hepatopancreatic ampulla is located in the 2nd (descending) part of the duodenum. The duodenum is the first part of the small intestine and is divided into four parts: superior, descending, horizontal, and ascending. The hepatopancreatic ampulla, also known as the ampulla of Vater, is a small opening where the common bile duct and the main pancreatic duct join together and empty into the duodenum. It is situated in the descending part of the duodenum, making option 2 the correct answer.

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  • 41. 

    The duodenum and jejunum are distinguishable by

    • The z line

    • Different arterial supplies

    • Different mucosa

    • The presence of plicae circularis

    Correct Answer
    A. Different arterial supplies
    Explanation
    The duodenum and jejunum can be distinguished by their different arterial supplies. The duodenum receives blood from the gastroduodenal artery and the superior pancreaticoduodenal artery, while the jejunum is primarily supplied by the superior mesenteric artery. This difference in blood supply helps to differentiate between the two structures.

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  • 42. 

    The three teniae coli come together at

    • The rectum

    • The anus

    • The duodenum

    • The cecum

    • The appendix

    Correct Answer
    A. The appendix
    Explanation
    The three teniae coli are bands of longitudinal muscle found in the large intestine. They run along the length of the colon and converge at certain points. In this case, the correct answer is the appendix. The appendix is a small, finger-like pouch located at the junction of the small and large intestines. While the teniae coli primarily run along the colon, they also extend to the appendix, bringing them together at this point.

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  • 43. 

    The arterial supply of the transverse colon comes from the

    • Superior mesenteric artery

    • Marginal artery

    • Right and left colic artery

    • Inferior mesenteric artery

    Correct Answer
    A. Right and left colic artery
    Explanation
    The correct answer is the right and left colic artery. The transverse colon receives its arterial supply from these two branches of the superior mesenteric artery. The right colic artery supplies the right side of the transverse colon, while the left colic artery supplies the left side. The marginal artery is a continuous vessel that runs along the border of the colon and provides collateral circulation. The inferior mesenteric artery supplies the descending colon, sigmoid colon, and rectum, but not the transverse colon.

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  • 44. 

    Action of this muscle is to flex the thigh, flex the vertebral column laterally and flex the trunk while sitting.

    • Quadratus lumborum

    • Iliacus

    • Psoas major

    • Psoas minor

    Correct Answer
    A. Psoas major
    Explanation
    The psoas major muscle is responsible for flexing the thigh, flexing the vertebral column laterally, and flexing the trunk while sitting. It is a long muscle that originates from the lumbar spine and inserts into the femur. When contracted, it helps to bring the thigh towards the chest, bend the spine sideways, and flex the trunk forward. This muscle plays an important role in various movements and postures, such as sitting, walking, and standing.

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  • 45. 

    The inferior attachment of this muscle is at the iliolumbar ligament and the internal lip of the iliac crest

    • Iliacus

    • Quadratus lumborum

    • Psoas major

    • Psoas minor

    Correct Answer
    A. Quadratus lumborum
    Explanation
    The quadratus lumborum muscle has an inferior attachment at the iliolumbar ligament and the internal lip of the iliac crest. This means that it connects to these structures at its lower end. The other muscles listed do not have this specific attachment.

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  • 46. 

    These nerves are at the L1 or L2 spinal level (more than one answer)

    • Lumbosacral trunk

    • Genitofemoral nerve

    • Femoral nerve

    • Lateral cutaneous nerve of the thigh

    • Ilioinguinal nerve

    Correct Answer(s)
    A. Genitofemoral nerve
    A. Ilioinguinal nerve
    Explanation
    The genitofemoral nerve and ilioinguinal nerve are both branches of the lumbar plexus, which is formed by the spinal nerves at the L1-L4 levels. Therefore, these nerves are at the L1 or L2 spinal level.

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  • 47. 

    Which bifurcates at the level of L4?

    • Inferior vena cava

    • Abdominal aorta

    • Common iliac artery

    • Median sacral artery

    Correct Answer
    A. Abdominal aorta
    Explanation
    The abdominal aorta is the correct answer because it is the main artery that supplies blood to the abdomen and lower extremities. It bifurcates, or splits into two branches, at the level of L4, forming the common iliac arteries. This branching allows for blood to be distributed to both sides of the pelvis and lower limbs. The inferior vena cava is a large vein that returns deoxygenated blood from the lower body to the heart, and it does not bifurcate at the level of L4. The median sacral artery is a small artery that supplies blood to the sacrum and coccyx, and it does not bifurcate at the level of L4.

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  • 48. 

    Which arteries are at the level of the T12 vertebra, on different vascular planes? (two answers)

    • Inferior phrenic

    • Gonadal

    • Superior mesenteric

    • Celiac

    • Suprarenal

    Correct Answer(s)
    A. Inferior phrenic
    A. Celiac
    Explanation
    The inferior phrenic artery is at the level of the T12 vertebra. It is a branch of the abdominal aorta and supplies blood to the diaphragm. The celiac artery is also at the level of the T12 vertebra. It is a major branch of the abdominal aorta and supplies blood to the stomach, liver, spleen, and other abdominal organs.

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  • 49. 

    Which are unpaired viseral arteries?

    • Suprarenal

    • Superior mesenteric

    • Inferior phrenic

    • Lumbar

    • Gonadal

    Correct Answer
    A. Superior mesenteric
    Explanation
    The superior mesenteric artery is the only unpaired visceral artery listed among the options. The suprarenal arteries, inferior phrenic arteries, lumbar arteries, and gonadal arteries all exist in pairs.

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  • Current Version
  • Mar 21, 2023
    Quiz Edited by
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  • Oct 19, 2009
    Quiz Created by
    Day4517

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