[DOCUMENT TITLE]
USMLE Step 1 Questions and Answers Full Test Bank with
complete solution Verified By Expert Best Rated 2023
Guaranteed Success Download TO Score A+
1. What gland is found in the muscular triangle of the neck? - Correct answer Thyroid
gland
2. Is an afferent or efferent pupillary defect described as B/L pupillary constriction when
light is shined in the unaffected eye and B/L paradoxical dilation when light is shined in
the affected eye? - Correct answer Afferent pupillary defect (CN II lesion); in an efferent
pupillary defect (CN III), B/L constrict when light is shined in the unaffected eye and
consentual pupil constriction occurs when light is shined in the affected eye.
3. What is the name of the spinal cord passing within the subarachnoid space and forming
the spinal nerves that exit the lumbar and sacral foramina? - Correct answer Cauda
equina
4. Name the laryngeal muscle described by the following: • Pulls the arytenoids cartilages
closer to the thyroid, relaxing the vocal ligaments and thereby decreasing the pitch -
Correct answer Thyroarytenoid muscles
5. Name the laryngeal muscle described by the following: • Tenses the vocal ligaments,
increasing the distance between the cartilages, thereby increasing the pitch - Correct
answer Cricothyroid muscles
6. Name the laryngeal muscle described by the following: • Adducts the vocal ligaments,
closes the air passageway during swallowing, and allows phonation - Correct answer
Lateral cricoarytenoid muscles
7. Name the laryngeal muscle described by the following: • Only muscle to abduct the
vocal cords - Correct answer Posterior cricoarytenoid muscles
, [DOCUMENT TITLE]
8. Where does the parotid (Stensen's) duct enter the oral cavity? - Correct answer
Opposite the second upper molar tooth
9. From what aortic arch are the following structures derived? • Common and internal
carotid arteries - Correct answer Third aortic arch MS CARD is my mnemonic for the
aortic arch derivatives
10. From what aortic arch are the following structures derived? • Degenerates - Correct
answer Fifth MS CARD is my mnemonic for the aortic arch derivatives
11. From what aortic arch are the following structures derived? • Stapes artery - Correct
answer Second MS CARD is my mnemonic for the aortic arch derivatives
12. From what aortic arch are the following structures derived? • Maxillary artery - Correct
answer First MS CARD is my mnemonic for the aortic arch derivatives
13. From what aortic arch are the following structures derived? • Arch of the aorta and right
subclavian artery - Correct answer Fourth MS CARD is my mnemonic for the aortic arch
derivatives
14. From what aortic arch are the following structures derived? • Right and left pulmonary
arteries and the ductus arteriosus - Correct answer Sixth MS CARD is my mnemonic for
the aortic arch derivatives
15. What abdominal muscle contributes to the anterior layer of the rectus sheath, forms the
inguinal ligament, and in men gives rise to the external spermatic fascia of the spermatic
cord? - Correct answer External abdominal oblique
16. Name the compartment of the lower extremity and the nerve based on its movements.
• Adduct the thigh and flex the hip - Correct answer Medial compartment of the thigh,
obturator nerve
, [DOCUMENT TITLE]
17. Name the compartment of the lower extremity and the nerve based on its movements.
• Plantar flex the foot, flex the toes, and invert the foot - Correct answer Posterior
compartment of the leg, tibial nerve
18. Name the compartment of the lower extremity and the nerve based on its movements.
• Dorsiflex the foot, extend the toes, and invert the foot - Correct answer Anterior
compartment of the leg, deep peroneal nerve
19. Name the compartment of the lower extremity and the nerve based on its movements.
• Flex the hip and extend the knee - Correct answer Anterior compartment of the thigh,
femoral nerve
20. Name the compartment of the lower extremity and the nerve based on its movements.
• Extend the hip and flex the knee - Correct answer Posterior compartment of the thigh,
tibial nerve
21. Name the compartment of the lower extremity and the nerve based on its movements.
• Plantar flex the foot and evert the foot - Correct answer Lateral compartment of the
leg, superficial peroneal nerve
22. What are the five branches of the posterior cord of the brachial plexus? - Correct
answer STARS 1. Upper Subscapularis 2. Thoracodorsal 3. Axillary 4. Radial 5. Lower
Subscapularis
23. Name the correct artery. • The right recurrent laryngeal nerve passes around it. -
Correct answer Right brachiocephalic artery
24. Name the correct artery. • The left recurrent laryngeal nerve passes around it. - Correct
answer Arch of the aorta
25. The inferior mesenteric artery drains into it. - Correct answer The splenic vein
, [DOCUMENT TITLE]
26. Are the quadrate and caudate lobes of the liver functionally part of the left or right
lobe? - Correct answer Functionally they are part of the left lobe of the liver because
they receive their blood supply from the left hepatic artery. Anatomically they are
considered part of the right lobe of the liver.
27. What bones make up the acetabulum? - Correct answer Pubis, ilium, and ischium
28. What is the anatomic positioning of the right and left gastric nerve plexus of the
esophagus as they pass through the diaphragm? - Correct answer LARP: Left goes
Anterior and Right goes Posterior (because of the rotation of the gut; remember your
embryology!)
29. What vessel is lacerated in an epidural hematoma? - Correct answer Middle meningeal
artery
30. True or false? Below the arcuate line, all the aponeurotic fibers run anterior to the
rectus abdominis. - Correct answer TRUE
31. What ocular muscle • Adducts the eyeball and is involved in horizontal conjugate gaze? -
Correct answer Medial rectus (CN III) (LR6 SO4)3
32. What ocular muscle • Elevates and adducts the eyeball? - Correct answer Superior
rectus (CN III) (LR6 SO4)3
33. What ocular muscle • Depresses and abducts the eyeball? - Correct answer Superior
Oblique (CN IV) (LR6 SO4)3
34. What ocular muscle • Elevates and abducts the eyeball? - Correct answer Inferior
Oblique (CN III) (LR6 SO4)3
USMLE Step 1 Questions and Answers Full Test Bank with
complete solution Verified By Expert Best Rated 2023
Guaranteed Success Download TO Score A+
1. What gland is found in the muscular triangle of the neck? - Correct answer Thyroid
gland
2. Is an afferent or efferent pupillary defect described as B/L pupillary constriction when
light is shined in the unaffected eye and B/L paradoxical dilation when light is shined in
the affected eye? - Correct answer Afferent pupillary defect (CN II lesion); in an efferent
pupillary defect (CN III), B/L constrict when light is shined in the unaffected eye and
consentual pupil constriction occurs when light is shined in the affected eye.
3. What is the name of the spinal cord passing within the subarachnoid space and forming
the spinal nerves that exit the lumbar and sacral foramina? - Correct answer Cauda
equina
4. Name the laryngeal muscle described by the following: • Pulls the arytenoids cartilages
closer to the thyroid, relaxing the vocal ligaments and thereby decreasing the pitch -
Correct answer Thyroarytenoid muscles
5. Name the laryngeal muscle described by the following: • Tenses the vocal ligaments,
increasing the distance between the cartilages, thereby increasing the pitch - Correct
answer Cricothyroid muscles
6. Name the laryngeal muscle described by the following: • Adducts the vocal ligaments,
closes the air passageway during swallowing, and allows phonation - Correct answer
Lateral cricoarytenoid muscles
7. Name the laryngeal muscle described by the following: • Only muscle to abduct the
vocal cords - Correct answer Posterior cricoarytenoid muscles
, [DOCUMENT TITLE]
8. Where does the parotid (Stensen's) duct enter the oral cavity? - Correct answer
Opposite the second upper molar tooth
9. From what aortic arch are the following structures derived? • Common and internal
carotid arteries - Correct answer Third aortic arch MS CARD is my mnemonic for the
aortic arch derivatives
10. From what aortic arch are the following structures derived? • Degenerates - Correct
answer Fifth MS CARD is my mnemonic for the aortic arch derivatives
11. From what aortic arch are the following structures derived? • Stapes artery - Correct
answer Second MS CARD is my mnemonic for the aortic arch derivatives
12. From what aortic arch are the following structures derived? • Maxillary artery - Correct
answer First MS CARD is my mnemonic for the aortic arch derivatives
13. From what aortic arch are the following structures derived? • Arch of the aorta and right
subclavian artery - Correct answer Fourth MS CARD is my mnemonic for the aortic arch
derivatives
14. From what aortic arch are the following structures derived? • Right and left pulmonary
arteries and the ductus arteriosus - Correct answer Sixth MS CARD is my mnemonic for
the aortic arch derivatives
15. What abdominal muscle contributes to the anterior layer of the rectus sheath, forms the
inguinal ligament, and in men gives rise to the external spermatic fascia of the spermatic
cord? - Correct answer External abdominal oblique
16. Name the compartment of the lower extremity and the nerve based on its movements.
• Adduct the thigh and flex the hip - Correct answer Medial compartment of the thigh,
obturator nerve
, [DOCUMENT TITLE]
17. Name the compartment of the lower extremity and the nerve based on its movements.
• Plantar flex the foot, flex the toes, and invert the foot - Correct answer Posterior
compartment of the leg, tibial nerve
18. Name the compartment of the lower extremity and the nerve based on its movements.
• Dorsiflex the foot, extend the toes, and invert the foot - Correct answer Anterior
compartment of the leg, deep peroneal nerve
19. Name the compartment of the lower extremity and the nerve based on its movements.
• Flex the hip and extend the knee - Correct answer Anterior compartment of the thigh,
femoral nerve
20. Name the compartment of the lower extremity and the nerve based on its movements.
• Extend the hip and flex the knee - Correct answer Posterior compartment of the thigh,
tibial nerve
21. Name the compartment of the lower extremity and the nerve based on its movements.
• Plantar flex the foot and evert the foot - Correct answer Lateral compartment of the
leg, superficial peroneal nerve
22. What are the five branches of the posterior cord of the brachial plexus? - Correct
answer STARS 1. Upper Subscapularis 2. Thoracodorsal 3. Axillary 4. Radial 5. Lower
Subscapularis
23. Name the correct artery. • The right recurrent laryngeal nerve passes around it. -
Correct answer Right brachiocephalic artery
24. Name the correct artery. • The left recurrent laryngeal nerve passes around it. - Correct
answer Arch of the aorta
25. The inferior mesenteric artery drains into it. - Correct answer The splenic vein
, [DOCUMENT TITLE]
26. Are the quadrate and caudate lobes of the liver functionally part of the left or right
lobe? - Correct answer Functionally they are part of the left lobe of the liver because
they receive their blood supply from the left hepatic artery. Anatomically they are
considered part of the right lobe of the liver.
27. What bones make up the acetabulum? - Correct answer Pubis, ilium, and ischium
28. What is the anatomic positioning of the right and left gastric nerve plexus of the
esophagus as they pass through the diaphragm? - Correct answer LARP: Left goes
Anterior and Right goes Posterior (because of the rotation of the gut; remember your
embryology!)
29. What vessel is lacerated in an epidural hematoma? - Correct answer Middle meningeal
artery
30. True or false? Below the arcuate line, all the aponeurotic fibers run anterior to the
rectus abdominis. - Correct answer TRUE
31. What ocular muscle • Adducts the eyeball and is involved in horizontal conjugate gaze? -
Correct answer Medial rectus (CN III) (LR6 SO4)3
32. What ocular muscle • Elevates and adducts the eyeball? - Correct answer Superior
rectus (CN III) (LR6 SO4)3
33. What ocular muscle • Depresses and abducts the eyeball? - Correct answer Superior
Oblique (CN IV) (LR6 SO4)3
34. What ocular muscle • Elevates and abducts the eyeball? - Correct answer Inferior
Oblique (CN III) (LR6 SO4)3
