Petruska Exam Questions
1. The spinal level T10 dermatome contains which anatomical feature:
a. hand
b. nipple
c. umbilicus
d. thigh
2. The patellar tendon reflex is associated with spinal segments:
a. C5-6
b. T10-12
c. L2-4
d. S1-2
3. Clarke’s nucleus is located between:
a. T4 and T10
b. L1 and L5
c. C1 and C8
d. C8 and L2
4. The following statements are correct EXCEPT:
a. the lateral corticospinal tract is present in the lateral funiculus
b. the medial to lateral topography in the lateral corticospinal tract represents
cervical to sacral dematomes respectively
c. the substantia gelatinosa is located in the posterior cell column
d. the posterior intermediate sulcus extends caudally from about the T7 spinal
cord level
e. the alpha and gamma motor neurons are located in the anterior cell column
5. A patient complains of loss of pain sensation from the big
toe on his right foot. On further examination, the patient is
shown to have a bilateral loss affecting both big toes.
Which site on the diagram is the most likely location of the
lesion?
a. A
b. B
c. C
d. D
e. none of the above
6. What spinal nerve or spinal cord segment would be
affected in the description above?
a. L5-S1
b. S3
c. L3
d. T10
1. What is the only cranial nerve to emerge from the posterior aspect of the
brainstem?
a. I
b. II
Petruska Exam Questions
c. III
d. IV
e. V
i. Which nerve innervates the trapezius and
sternocleidomastoid muscles?
2.
3.
4.
5.
6.
VIII
IX
X
XI
XII
a. Cranial nerve VII
7. is a pure motor nerve
8. is a pure sensory nerve
9. is a mixed function nerve
10. emerges from the midbrain
11. b and d correct
a. A patient complains of ringing in the ears. You suspect possible
involvement of cranial nerve.
12. V
13. VI
14. VII
15. VIII
16. IX
a. All of the following are correct EXCEPT:
17. Cranial nerve 3 is the oculomotor nerve
18. The somata of primary afferents involved in toothache are located in the
trigeminal
ganglion.
19. An acoustic neuroma usually originates in the interpeduncular fossa.
20. The pyramids are a prominent external feature of the anterior medulla.
21. The corpora quadrigemini are a prominent external feature of the posterior
midbrain.
22. The specific nucleus closest to the lateral aspect of the genu of the internal
capsule is
a. Dorsolateral thalamus
b. Septal nucleus
c. Caudate nucleus
d. Globus pallidus internus (GP-I, GPi)
e. none
23. The posterior limb of the internal capsule
Petruska Exam Questions
a.
b.
c.
d.
e.
contains frontopontine fibers
lies between the thalamus and the lenticular nucleus
consists of gray matter
is a nucleus
none of the above is correct
24. the anterior commissure
a. is a 3 layered cortex
b. connects structures in the temporal lobes
c. connects to the hypothalamus via the fornix
d. is important in short-term memory
e. is caudal to the cerebral aqueduct
25. The sensory thalamus includes the:
a. lateral geniculate body
b. ventral posterior medial nucleus
c. ventral lateral nucleus
d. all of the above are correct
e. a and b are correct
26. The thalamus is associated with the
a. 3rd ventricle
b. 4th ventricle
c. lateral ventricles
d. cerebral aqueduct
e. central canal
27. Which cranial nerve projects directly to the thalamus?
a. I
b. II
c. III
d. IV
e. V
Petruska Exam Questions
1. c
2. c
3. d
4. d
5. a
6. a
7. d
8. d
9. c
10. d
11. c
12. D
13. B
14. B
15. e
16. a
17. b