CS 2 Quiz 2.1.

1. Questions 18 through 21 refer to the figure below of an axial MRI of the female pelvis.Which arrow points to the piriformis muscle?

D

B

C

A

The correct answer is B. In the figure, the arrow labeled B points to the piriformis muscle. The piriformis muscle is a small muscle located deep in the buttocks, and it plays a role in hip rotation and stability. In this axial MRI of the female pelvis, the arrow is indicating the location of the piriformis muscle.

Explanation

The correct answer is B. In the figure, the arrow labeled B points to the piriformis muscle. The piriformis muscle is a small muscle located deep in the buttocks, and it plays a role in hip rotation and stability. In this axial MRI of the female pelvis, the arrow is indicating the location of the piriformis muscle.

2. Questions 64 through 67 refer to the figure below of an axial CT of the pelvis.Which arrow points to the rectus abdominis muscle?

B

C

A

D

Arrow B points to the rectus abdominis muscle.

Explanation

Arrow B points to the rectus abdominis muscle.

3. Questions 40 through 43 refer to the figure below of an axial, T2-weighted MRI of the male pelvis.Which arrow points to the obturator externus muscle?

C

B

D

A

In the given axial T2-weighted MRI of the male pelvis, arrow B points to the obturator externus muscle. This muscle is located in the pelvic region and helps in the external rotation of the thigh. It originates from the obturator foramen and inserts into the trochanteric fossa of the femur. It is important for stabilizing the hip joint and assisting in movements of the thigh.

Explanation

In the given axial T2-weighted MRI of the male pelvis, arrow B points to the obturator externus muscle. This muscle is located in the pelvic region and helps in the external rotation of the thigh. It originates from the obturator foramen and inserts into the trochanteric fossa of the femur. It is important for stabilizing the hip joint and assisting in movements of the thigh.

4. In the figure below of a sagittal MRI of the male pelvis, which arrow points to the prostate gland?

A

D

C

B

Arrow A points to the prostate gland in the sagittal MRI of the male pelvis.

Explanation

Arrow A points to the prostate gland in the sagittal MRI of the male pelvis.

5. Questions 36 through 39 refer to the figure below of an axial, T1-weighted MRI of the male pelvis.Which arrow points to the femoral artery?

D

C

B

A

The arrow pointing to B indicates the femoral artery. This is because the femoral artery is located in the upper thigh region, which is where arrow B is pointing to in the given figure. The femoral artery is a large blood vessel that supplies blood to the lower extremities.

Explanation

The arrow pointing to B indicates the femoral artery. This is because the femoral artery is located in the upper thigh region, which is where arrow B is pointing to in the given figure. The femoral artery is a large blood vessel that supplies blood to the lower extremities.

6. Spermatozoa are produced in the epididymis.

True

False

Spermatozoa are not produced in the epididymis. The epididymis is a coiled tube located on the back of each testicle, where sperm are stored and matured. Spermatozoa are actually produced in the testes within structures called the seminiferous tubules.

Explanation

Spermatozoa are not produced in the epididymis. The epididymis is a coiled tube located on the back of each testicle, where sperm are stored and matured. Spermatozoa are actually produced in the testes within structures called the seminiferous tubules.

7. Questions 76 through 79 refer to the figure below of an MRA of the descending aorta.Which arrow points to the right external iliac artery?

D

B

C

A

The arrow labeled D points to the right external iliac artery.

Explanation

The arrow labeled D points to the right external iliac artery.

8. Match the following:

C

A

B

D

Submit

9. The most anterior portion of the iliac crest is the:

Iliopubic eminence

Pubic tubercle

Anterior superior iliac spine

Lliac fossa

The anterior superior iliac spine is the correct answer because it is the most anterior part of the iliac crest. It is a bony prominence located at the front of the iliac crest and serves as an attachment point for various muscles and ligaments, including the inguinal ligament. The iliac fossa is a concave area on the inner surface of the ilium, while the iliac tubercle and pubic tubercle are different anatomical landmarks not directly related to the iliac crest.

Explanation

The anterior superior iliac spine is the correct answer because it is the most anterior part of the iliac crest. It is a bony prominence located at the front of the iliac crest and serves as an attachment point for various muscles and ligaments, including the inguinal ligament. The iliac fossa is a concave area on the inner surface of the ilium, while the iliac tubercle and pubic tubercle are different anatomical landmarks not directly related to the iliac crest.

10. Which arrow points to the IT band?

C

A

B

D

Arrow C points to the IT band.

Explanation

Arrow C points to the IT band.

11. Questions 60 through 63 refer to the figure below of an axial, T2-weighted MRI of a female pelvis.Which arrow points to the levator ani muscle?

C

D

B

A

The levator ani muscle is a group of muscles that supports the pelvic organs. In the given axial, T2-weighted MRI of a female pelvis, arrow B points to the levator ani muscle.

Explanation

The levator ani muscle is a group of muscles that supports the pelvic organs. In the given axial, T2-weighted MRI of a female pelvis, arrow B points to the levator ani muscle.

12. Questions 48 through 51 refer to the figure below of a sagittal, T2-weighted MRI of the male pelvis.Which arrow points to the prostate gland?

C

A

D

B

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Explanation

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13. What structure is located within the inguinal canal in females?

Suspensory ligament of the ovary

Round ligament

Cardinal ligament

Uterosacral ligament

The round ligament is located within the inguinal canal in females. It is a structure that connects the uterus to the labia majora. During fetal development, the round ligament helps guide the descent of the ovaries into the pelvis. In adult females, it helps to support the uterus and maintain its position. It also plays a role in stabilizing the uterus during movements and activities.

Explanation

The round ligament is located within the inguinal canal in females. It is a structure that connects the uterus to the labia majora. During fetal development, the round ligament helps guide the descent of the ovaries into the pelvis. In adult females, it helps to support the uterus and maintain its position. It also plays a role in stabilizing the uterus during movements and activities.

14. In the figure below of an axial MRI of the female pelvis, which arrow points to the left ovary?

A

B

C

D

not-available-via-ai

Explanation

not-available-via-ai

15. Of the following structures, which one is most lateral?

Labia majora

Clitoris

Labia minora

Mons pubis

The labia majora is the most lateral structure among the given options. The labia majora are the outer folds of skin and tissue located on either side of the vaginal opening. They are the largest and most visible part of the external female genitalia and are positioned on the outermost sides. The clitoris, labia minora, and mons pubis are also part of the external female genitalia, but they are not as laterally positioned as the labia majora.

Explanation

The labia majora is the most lateral structure among the given options. The labia majora are the outer folds of skin and tissue located on either side of the vaginal opening. They are the largest and most visible part of the external female genitalia and are positioned on the outermost sides. The clitoris, labia minora, and mons pubis are also part of the external female genitalia, but they are not as laterally positioned as the labia majora.

16. What structure serves as the topographic landmark marking the posterior prostate inmales and the vaginal vault in females during a rectal exam?

Perineal flexure

Internal anal sphincter

Transverse rectal fold

Rectal ampulla

The transverse rectal fold serves as the topographic landmark marking the posterior prostate in males and the vaginal vault in females during a rectal exam. This fold is a ridge-like structure that can be felt during the examination and helps to locate and assess the surrounding structures accurately. It is an important reference point for medical professionals performing rectal exams to ensure proper evaluation and diagnosis.

Explanation

The transverse rectal fold serves as the topographic landmark marking the posterior prostate in males and the vaginal vault in females during a rectal exam. This fold is a ridge-like structure that can be felt during the examination and helps to locate and assess the surrounding structures accurately. It is an important reference point for medical professionals performing rectal exams to ensure proper evaluation and diagnosis.