USMLE Step I Comprehensive review
questions with correct answers
What gland is found in the muscular triangle of the neck? - CORRECT
ANSWERS ✔✔Thyroid gland
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 ANSWERS
✔✔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.
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 ANSWERS ✔✔Cauda equina
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 ANSWERS ✔✔Thyroarytenoid
muscles
Name the laryngeal muscle described by the following: • Tenses the vocal
ligaments, increasing the distance between the cartilages, thereby
increasing the pitch - CORRECT ANSWERS ✔✔Cricothyroid muscles
,Name the laryngeal muscle described by the following: • Adducts the vocal
ligaments, closes the air passageway during swallowing, and allows
phonation - CORRECT ANSWERS ✔✔Lateral cricoarytenoid muscles
Name the laryngeal muscle described by the following: • Only muscle to
abduct the vocal cords - CORRECT ANSWERS ✔✔Posterior
cricoarytenoid muscles
Where does the parotid (Stensen's) duct enter the oral cavity? - CORRECT
ANSWERS ✔✔Opposite the second upper molar tooth
From what aortic arch are the following structures derived? • Common and
internal carotid arteries - CORRECT ANSWERS ✔✔Third aortic arch MS
CARD is my mnemonic for the aortic arch derivatives
From what aortic arch are the following structures derived? • Degenerates -
CORRECT ANSWERS ✔✔Fifth MS CARD is my mnemonic for the aortic
arch derivatives
From what aortic arch are the following structures derived? • Stapes artery
- CORRECT ANSWERS ✔✔Second MS CARD is my mnemonic for the
aortic arch derivatives
From what aortic arch are the following structures derived? • Maxillary
artery - CORRECT ANSWERS ✔✔First MS CARD is my mnemonic for the
aortic arch derivatives
,From what aortic arch are the following structures derived? • Arch of the
aorta and right subclavian artery - CORRECT ANSWERS ✔✔Fourth MS
CARD is my mnemonic for the aortic arch derivatives
From what aortic arch are the following structures derived? • Right and left
pulmonary arteries and the ductus arteriosus - CORRECT ANSWERS
✔✔Sixth MS CARD is my mnemonic for the aortic arch derivatives
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 ANSWERS
✔✔External abdominal oblique
Name the compartment of the lower extremity and the nerve based on its
movements. • Adduct the thigh and flex the hip - CORRECT ANSWERS
✔✔Medial compartment of the thigh, obturator nerve
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 ANSWERS ✔✔Posterior compartment of the leg, tibial nerve
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 ANSWERS ✔✔Anterior compartment of the leg, deep peroneal
nerve
, Name the compartment of the lower extremity and the nerve based on its
movements. • Flex the hip and extend the knee - CORRECT ANSWERS
✔✔Anterior compartment of the thigh, femoral nerve
Name the compartment of the lower extremity and the nerve based on its
movements. • Extend the hip and flex the knee - CORRECT ANSWERS
✔✔Posterior compartment of the thigh, tibial nerve
Name the compartment of the lower extremity and the nerve based on its
movements. • Plantar flex the foot and evert the foot - CORRECT
ANSWERS ✔✔Lateral compartment of the leg, superficial peroneal nerve
What are the five branches of the posterior cord of the brachial plexus? -
CORRECT ANSWERS ✔✔STARS 1. Upper Subscapularis 2.
Thoracodorsal 3. Axillary 4. Radial 5. Lower Subscapularis
Name the correct artery. • The right recurrent laryngeal nerve passes
around it. - CORRECT ANSWERS ✔✔Right brachiocephalic artery
Name the correct artery. • The left recurrent laryngeal nerve passes around
it. - CORRECT ANSWERS ✔✔Arch of the aorta
The inferior mesenteric artery drains into it. - CORRECT ANSWERS
✔✔The splenic vein
Are the quadrate and caudate lobes of the liver functionally part of the left
or right lobe? - CORRECT ANSWERS ✔✔Functionally they are part of the
questions with correct answers
What gland is found in the muscular triangle of the neck? - CORRECT
ANSWERS ✔✔Thyroid gland
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 ANSWERS
✔✔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.
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 ANSWERS ✔✔Cauda equina
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 ANSWERS ✔✔Thyroarytenoid
muscles
Name the laryngeal muscle described by the following: • Tenses the vocal
ligaments, increasing the distance between the cartilages, thereby
increasing the pitch - CORRECT ANSWERS ✔✔Cricothyroid muscles
,Name the laryngeal muscle described by the following: • Adducts the vocal
ligaments, closes the air passageway during swallowing, and allows
phonation - CORRECT ANSWERS ✔✔Lateral cricoarytenoid muscles
Name the laryngeal muscle described by the following: • Only muscle to
abduct the vocal cords - CORRECT ANSWERS ✔✔Posterior
cricoarytenoid muscles
Where does the parotid (Stensen's) duct enter the oral cavity? - CORRECT
ANSWERS ✔✔Opposite the second upper molar tooth
From what aortic arch are the following structures derived? • Common and
internal carotid arteries - CORRECT ANSWERS ✔✔Third aortic arch MS
CARD is my mnemonic for the aortic arch derivatives
From what aortic arch are the following structures derived? • Degenerates -
CORRECT ANSWERS ✔✔Fifth MS CARD is my mnemonic for the aortic
arch derivatives
From what aortic arch are the following structures derived? • Stapes artery
- CORRECT ANSWERS ✔✔Second MS CARD is my mnemonic for the
aortic arch derivatives
From what aortic arch are the following structures derived? • Maxillary
artery - CORRECT ANSWERS ✔✔First MS CARD is my mnemonic for the
aortic arch derivatives
,From what aortic arch are the following structures derived? • Arch of the
aorta and right subclavian artery - CORRECT ANSWERS ✔✔Fourth MS
CARD is my mnemonic for the aortic arch derivatives
From what aortic arch are the following structures derived? • Right and left
pulmonary arteries and the ductus arteriosus - CORRECT ANSWERS
✔✔Sixth MS CARD is my mnemonic for the aortic arch derivatives
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 ANSWERS
✔✔External abdominal oblique
Name the compartment of the lower extremity and the nerve based on its
movements. • Adduct the thigh and flex the hip - CORRECT ANSWERS
✔✔Medial compartment of the thigh, obturator nerve
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 ANSWERS ✔✔Posterior compartment of the leg, tibial nerve
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 ANSWERS ✔✔Anterior compartment of the leg, deep peroneal
nerve
, Name the compartment of the lower extremity and the nerve based on its
movements. • Flex the hip and extend the knee - CORRECT ANSWERS
✔✔Anterior compartment of the thigh, femoral nerve
Name the compartment of the lower extremity and the nerve based on its
movements. • Extend the hip and flex the knee - CORRECT ANSWERS
✔✔Posterior compartment of the thigh, tibial nerve
Name the compartment of the lower extremity and the nerve based on its
movements. • Plantar flex the foot and evert the foot - CORRECT
ANSWERS ✔✔Lateral compartment of the leg, superficial peroneal nerve
What are the five branches of the posterior cord of the brachial plexus? -
CORRECT ANSWERS ✔✔STARS 1. Upper Subscapularis 2.
Thoracodorsal 3. Axillary 4. Radial 5. Lower Subscapularis
Name the correct artery. • The right recurrent laryngeal nerve passes
around it. - CORRECT ANSWERS ✔✔Right brachiocephalic artery
Name the correct artery. • The left recurrent laryngeal nerve passes around
it. - CORRECT ANSWERS ✔✔Arch of the aorta
The inferior mesenteric artery drains into it. - CORRECT ANSWERS
✔✔The splenic vein
Are the quadrate and caudate lobes of the liver functionally part of the left
or right lobe? - CORRECT ANSWERS ✔✔Functionally they are part of the
