Lymphatic System Exam Practice Quiz
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The sac surrounding the heart is the
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Tachicardium
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Pericardium
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Erythocardium
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Pleural sac
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This lymphatic system exam practice assesses knowledge of lymphatic structures and functions. It identifies misconceptions about lymph nodes, capillaries, and pathways of lymph flow, emphasizing the system's role in immune response and fluid balance.
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- 2.
What is not a major player in the lympatic system?
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Liver
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Spleen
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Lymph nodes
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Thymus
Correct Answer
A. LiverExplanation
The liver is not a major player in the lymphatic system because it is not directly involved in the production, maintenance, or circulation of lymph. The lymphatic system primarily consists of lymph nodes, which filter lymph and trap foreign substances, the spleen, which filters blood and helps fight infections, and the thymus, which plays a crucial role in the development and maturation of T-lymphocytes. The liver, on the other hand, is primarily responsible for detoxification, metabolism, and the production of bile.Rate this question:
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- 3.
Where do you not find major lymph nodes?
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Neck
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Groin
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Armpits
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Diencephalon of the brain
Correct Answer
A. Diencephalon of the brainExplanation
Major lymph nodes are found in various parts of the body, including the neck, groin, and armpits. However, the diencephalon of the brain is not a location where major lymph nodes are typically found. The diencephalon is a part of the brain that consists of the thalamus and hypothalamus, and it is primarily involved in functions such as sensory processing and regulation of hormones, rather than lymphatic drainage.Rate this question:
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- 4.
What is not one of the major channels through which lymph travels back to be dumped into the blood stream?
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Coronary artery
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Right lymphatic duct
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Thoracic duct
Correct Answer
A. Coronary arteryExplanation
The coronary artery is not one of the major channels through which lymph travels back to be dumped into the bloodstream. Lymph is a fluid that circulates throughout the body and is collected by lymphatic vessels. The main channels through which lymph returns to the bloodstream are the right lymphatic duct and the thoracic duct. The coronary artery, on the other hand, is a blood vessel that supplies oxygenated blood to the heart muscle. It is not involved in the transportation of lymph.Rate this question:
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- 5.
Which blood pressure reading tells the max pressure put on the blood from the heart by the sqeezing of the heart?
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Seismic
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Sympathetic
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Systolic
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Diastolic
Correct Answer
A. SystolicExplanation
The systolic blood pressure reading is the measurement of the maximum pressure exerted on the blood vessels by the heart when it contracts or squeezes. This reading represents the force with which blood is pushed out of the heart and into the arteries. It is typically the higher number in a blood pressure reading and is an important indicator of cardiovascular health.Rate this question:
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- 6.
What are the two largest veins in the body?
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Superior and inferior aorta
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Superior and inferior vena cava
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Right lymph. and thoracics
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Thoracic and abdominal aorta
Correct Answer
A. Superior and inferior vena cavaExplanation
The superior and inferior vena cava are the two largest veins in the body. The superior vena cava is responsible for carrying deoxygenated blood from the upper body back to the heart, while the inferior vena cava carries deoxygenated blood from the lower body back to the heart. These veins play a crucial role in the circulation of blood throughout the body.Rate this question:
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- 7.
Which of hte following are two large ducts that drain lymph back into the venous blood?
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Abdominal and thoracic ducts
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Thoracic and right lymphatic ducts
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Right and left subclavian ducts
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Right and left brachial ducts
Correct Answer
A. Thoracic and right lymphatic ductsExplanation
The correct answer is thoracic and right lymphatic ducts. These two large ducts are responsible for draining lymph back into the venous blood. The thoracic duct is the largest lymphatic vessel in the body and drains lymph from the lower body, left upper body, and left side of the head and neck. The right lymphatic duct, on the other hand, drains lymph from the right side of the head and neck, right upper body, and right arm. Together, these ducts play a crucial role in maintaining the balance of fluids and immune cells in the body.Rate this question:
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- 8.
What is not true about adaptive or specific immunity?
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The ability of the body to defend itself against specific invading agents
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Antigens are substances recognized as foreign and provoke and immune response
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Does not involve specificity or memory
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Involves t and b cells
Correct Answer
A. Does not involve specificity or memoryExplanation
Adaptive or specific immunity is a type of immune response that involves the ability of the body to defend itself against specific invading agents. It recognizes antigens, which are substances recognized as foreign, and provokes an immune response. Unlike innate immunity, adaptive immunity does involve specificity and memory. T and B cells are key players in adaptive immunity, as they are responsible for recognizing and targeting specific antigens.Rate this question:
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- 9.
What part of the heart tiggers the initial heart beat?
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Sinoatrial node
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Atrioventricular node
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Purkinje fibers
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Mitral node
Correct Answer
A. Sinoatrial nodeExplanation
The sinoatrial node, also known as the SA node, is responsible for initiating the heartbeat. It is located in the right atrium of the heart and acts as the natural pacemaker. The SA node generates electrical impulses that cause the atria to contract, initiating the heartbeat. These electrical signals then travel to the atrioventricular node, purkinje fibers, and other parts of the heart, coordinating the contraction and relaxation of the heart muscles. Therefore, the correct answer is the sinoatrial node.Rate this question:
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- 10.
What controls heart rate and blood flow through the vascular system?
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Cardiovascular center in the medulla oblongata
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Cardiovascular center int eh cerebrum
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Cardiovascular center in the cerebellum
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Cardiovascular center in the diencephalon
Correct Answer
A. Cardiovascular center in the medulla oblongataExplanation
The cardiovascular center in the medulla oblongata controls heart rate and blood flow through the vascular system. The medulla oblongata is a part of the brainstem that regulates various autonomic functions, including cardiovascular function. It receives inputs from various sensors in the body, such as baroreceptors and chemoreceptors, and sends signals to the heart and blood vessels to adjust heart rate, blood pressure, and blood flow. This control center plays a crucial role in maintaining homeostasis and ensuring proper functioning of the cardiovascular system.Rate this question:
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- 11.
What is the thick muscle wall of the heart called?
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Myocardium
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Epicardium
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Endocardium
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Pericardium
Correct Answer
A. MyocardiumExplanation
The thick muscle wall of the heart is called the myocardium. It is responsible for the contraction and pumping action of the heart, allowing it to effectively circulate blood throughout the body. The myocardium is made up of specialized cardiac muscle cells that are capable of generating and conducting electrical impulses, ensuring coordinated and efficient heart function.Rate this question:
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- 12.
What statement is true?
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The lymphatic system transports dietary proteins
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The lymphatic system does not lay a part in the body's defenses
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Lymphatic system drains excess interstitial fluid
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Lymphatic system involves a transport of blood
Correct Answer
A. Lymphatic system drains excess interstitial fluidExplanation
The lymphatic system drains excess interstitial fluid. This is true because the lymphatic system consists of a network of lymphatic vessels that collect and transport excess fluid, called lymph, from the tissues back into the bloodstream. This helps to maintain fluid balance in the body and prevent the accumulation of fluid in the tissues.Rate this question:
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- 13.
What is not true about the lymphatic system?
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Vessels begin as lymphatic capillaries closed at one end
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Lymphatic vessels unite to form larger lymphatic vessels
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Lymph vessels pass through lymph nodes which are encapsulated organs with masses of B and T cells
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B cells mature in the thymus
Correct Answer
A. B cells mature in the thymusExplanation
B cells do not mature in the thymus. They mature in the bone marrow. The thymus is responsible for the maturation of T cells, not B cells.Rate this question:
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- 14.
What structure is responsible for squeezing off capillaries and directing blood flow to different parts of the body
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Metarteriole
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Precapillary sphincters
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Anastomoses
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Vasomotors
Correct Answer
A. Precapillary sphinctersExplanation
Precapillary sphincters are responsible for squeezing off capillaries and directing blood flow to different parts of the body. These small muscular rings are located at the entrance of capillaries and can constrict or relax to regulate blood flow. When the precapillary sphincters constrict, they close off certain capillaries, redirecting blood to other areas of the body that require more oxygen and nutrients. Conversely, when they relax, they allow blood to flow into the capillaries, ensuring the delivery of oxygen and nutrients to the tissues.Rate this question:
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- 15.
What statement is false
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Arteries have elasticity
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Arteries have valves
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Arteries take blood away from the heart
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Arteries have the thickest walls
Correct Answer
A. Arteries have valvesExplanation
Arteries do not have valves. Valves are present in veins to prevent the backflow of blood. Arteries, on the other hand, carry oxygenated blood away from the heart to various parts of the body. They have thick walls to withstand the high pressure generated by the heart's pumping action. However, they do not possess valves like veins.Rate this question:
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- 16.
What chamber has the thickest walls due to the pressure needed to force blood thoughout the body?
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Left atrium
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Right ventricle
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Right atrium
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Left ventricle
Correct Answer
A. Left ventricleExplanation
The left ventricle has the thickest walls due to the pressure needed to force blood throughout the body. The left ventricle is responsible for pumping oxygenated blood to the rest of the body, so it needs to generate enough force to overcome the resistance of the systemic circulation. Its muscular walls are thicker than those of the other chambers to generate the necessary pressure and ensure efficient blood flow.Rate this question:
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- 17.
What is not true about blood/heart/circulation?
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The body has about 5 liters of blood
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The heart pumps about 5 liter/minute
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The body has about 60,000 miles of blood vessels
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Right side of the heart is systemic circulation; left side is pulmonary circulation
Correct Answer
A. Right side of the heart is systemic circulation; left side is pulmonary circulationExplanation
The correct answer is that the right side of the heart is pulmonary circulation, and the left side is systemic circulation. In pulmonary circulation, the right side of the heart pumps deoxygenated blood to the lungs to pick up oxygen. In systemic circulation, the left side of the heart pumps oxygenated blood to the rest of the body.Rate this question:
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- 18.
What statement is false
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Veins return blood to the heart
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Veins have thin walls
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Veins have elasticity
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Veins have valves
Correct Answer
A. Veins have elasticityExplanation
The statement "veins have elasticity" is false. Veins do not have elasticity like arteries do. Arteries have elastic fibers in their walls that allow them to stretch and recoil, helping to maintain blood pressure. Veins, on the other hand, have thinner walls and are less elastic. They rely on the contraction of surrounding muscles and the presence of valves to help push blood back to the heart against gravity.Rate this question:
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- 19.
What is the first branching of the aorta while it is still in the pelvic girdle
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Femoral artery
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Femoral vein
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Iliac artery
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Iliac vein
Correct Answer
A. Iliac arteryExplanation
The iliac artery is the correct answer because it is the first branching of the aorta while it is still in the pelvic girdle. The iliac artery is responsible for supplying blood to the lower limbs and pelvic organs. The femoral artery and vein are branches of the iliac artery, and the iliac vein is a branch of the inferior vena cava.Rate this question:
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- 20.
Which valve is mismatched
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Semilunar/pulmonary
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Semilunar/aortic
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Mitral/tricuspid
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Right av/tricuspid
Correct Answer
A. Mitral/tricuspidExplanation
The mitral/tricuspid valve is mismatched because the mitral valve is located between the left atrium and left ventricle, while the tricuspid valve is located between the right atrium and right ventricle. These valves are on opposite sides of the heart and serve different functions, so they cannot be considered a match.Rate this question:
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- 21.
Where does the blood go after it passes through the mitral valve?
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Right atrium
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Right ventricle
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Left atrium
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Left ventricle
Correct Answer
A. Left ventricleExplanation
After passing through the mitral valve, the blood goes into the left ventricle. The mitral valve is located between the left atrium and the left ventricle, and it ensures that blood flows in one direction from the atrium to the ventricle. Once the blood passes through the mitral valve, it enters the left ventricle, which is responsible for pumping oxygenated blood to the rest of the body.Rate this question:
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- 22.
What fibers reinforce the tricuspid valve and mitral valves?
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Fibrin
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Papillary muscles
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Chordae tendineae
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Nothing
Correct Answer
A. Chordae tendineaeExplanation
The chordae tendineae are tendinous cords that connect the papillary muscles to the tricuspid and mitral valves in the heart. These fibers play a crucial role in preventing the valves from prolapsing or reversing into the atria during ventricular contraction. They help to anchor the valves in place and maintain their proper functioning, ensuring the unidirectional flow of blood through the heart.Rate this question:
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- 23.
What is not true about lymph capillarries?
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Closed on one end
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Unique one-way structure
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Permits interstitial fluid to flow both in and out
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Slightly larger diameter than blood capillaries
Correct Answer
A. Permits interstitial fluid to flow both in and outExplanation
Lymph capillaries do not permit interstitial fluid to flow both in and out. Instead, they only allow interstitial fluid to flow into the capillaries, but not out of them. This one-way structure is important for the lymphatic system to collect excess fluid and waste products from tissues and return them to the bloodstream.Rate this question:
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- 24.
The primary vessels providing blood to nourish the heart are
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Coronary sinuses
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Right and left coronary veins
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Right and left coronary arteries
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Ciliac arteries
Correct Answer
A. Right and left coronary arteriesExplanation
The primary vessels that provide blood to nourish the heart are the right and left coronary arteries. These arteries branch off from the aorta and supply oxygenated blood to the heart muscle. The coronary arteries are essential for delivering nutrients and oxygen to the heart, ensuring its proper functioning. Without a sufficient blood supply from these arteries, the heart may not receive the necessary nourishment, leading to various cardiovascular conditions.Rate this question:
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- 25.
What artery/vein removes blood from the head?
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Carotid artery
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Carotid vein
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Jugular vein
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Jugular artery
Correct Answer
A. Jugular veinExplanation
The jugular vein is the correct answer because it is responsible for removing deoxygenated blood from the head and neck and returning it to the heart. The carotid artery is responsible for supplying oxygenated blood to the head, so it does not remove blood. Similarly, the carotid vein does not exist, so it cannot remove blood from the head. The jugular artery also does not exist, so it cannot be the correct answer.Rate this question:
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- 26.
What statement is false concerning fetal circulation?
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Foramen ovale connects the right and left ventricles in the fetus
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Foramen ovale closes at birth
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Mother and fetal blood do not mix
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The foramen oval becomes the fossa ovals after birth
Correct Answer
A. Foramen ovale connects the right and left ventricles in the fetusExplanation
The statement that is false concerning fetal circulation is that the foramen ovale connects the right and left ventricles in the fetus. In reality, the foramen ovale is a hole in the septum between the right and left atria, allowing blood to bypass the non-functioning fetal lungs. It does not connect the ventricles.Rate this question:
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- 27.
The vessels carrying lymph to and from the lymph nodes are called?
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Inner- and exo- lymph vessels
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Inter- and exo-lymph vessels
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Afferent and efferent lymph vessels
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Lymph veins and lymph arteries
Correct Answer
A. Afferent and efferent lymph vesselsExplanation
The correct answer is afferent and efferent lymph vessels. Afferent lymph vessels carry lymph fluid from the peripheral tissues towards the lymph nodes, while efferent lymph vessels carry lymph fluid away from the lymph nodes and towards the larger lymphatic vessels. "Inter-" and "exo-" lymph vessels are not commonly used terms in anatomy. Lymph veins and lymph arteries are not correct terms to describe the vessels carrying lymph.Rate this question:
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- 28.
What main arter/vein removes blood formt the heart muscle?
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Coronary artery
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Coronary vein
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Vena cava
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Coronary sinus
Correct Answer
A. Coronary sinusExplanation
The coronary sinus is the main artery/vein that removes blood from the heart muscle. It collects deoxygenated blood from the heart muscle and returns it to the right atrium of the heart. This blood is then pumped to the lungs to be oxygenated. The other options listed, such as the coronary artery, coronary vein, and vena cava, are not responsible for removing blood from the heart muscle.Rate this question:
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May 20, 2025Quiz Edited by
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Dec 09, 2011Quiz Created by
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