Download doc Practice midterm

Answer key :
1. ABC
2. AC
3.BD
4. D
1. An axon coursing through the left anterolateral column at the lumbar level of the spinal cord
may :
a. Terminate in the left nucleus gracilis
b. Project from a neuron in a right lumbar dorsal root ganglion
c. Project from a neuron in the sustantia gelatinosa of a right lumbar dorsal horn
d. Project from a neuron in the left lumbar dorsal horn
2. A neuron in the left nucleus cuneatus may :
a. Receive a direct axonal connection from a neuron in a left dorsal horn
b. Receive a direct axonal connection from a neuron in a right dorsal horn
c. Receive direct connections from axons in the right somatosensory of the cortex
d. Project to the left nucleus VPL of the thalamus
3. Complete distruction of the left half of the spinak cird at the highest Lumbar level (L1) will
interfere with which of the following :
a. Stretch relexes in the ankle
b. Reflex Flexion of the left foot away from a painful stimulus applied to the sole
c. Loss of pain and temperature sensation in the left toes
d. Loss of proprioception (joint position sense in the left foot)
4. Which of the following produce met-enkephaline :
a. Dorsal horn neurons that project axons into the anterolateral column
b. Axons of dorsal root ganglion cells that transmit painful stimuli
c. Neurons in nucleus cuneatus
d. Neurons in substantia gelatinosa
5. Which of the following is true of the external cuneate nucleus
a. It receives direct axonal connections from dorsal root ganglion cells that innervate muscle
spindles
b. It receives no information from the lower extremity
c. It contains neurons that project axons into the inferior cerebellar peduncle
d. It is involved in discriminative touch
6. Which of the following structures are involved in conveying discriminative touch sensation to
the left thalamus :
a. Right spinal trigeminal nucleus
b. Right main sensory nucleus of V
c. Right external cuneate nucleus
d. Left main sensory nucleus of V
7. Which of the following pairs of structures are analogous (perform similar functions)
a. Nucleus gracilis and main sensory nucleus of V
b. Intermediolateral cell column of spinal cord and dorsal motor nucleus of the vagus
c. Hypoglossal nucleus and ventral horn spinal cord
d. Clarke’s column and Spinal trigeminal nucleus
8. Total destruction of the left motor cortex will result in which of the following deficits
a. Mild weakness in the right side of the tongue
b. Difficulty in raising the right eyebrow
c. Difficulty in writing with the right hand
d. Difficulty in chewing on the right side of the mouth
9. Which of the following contain preganglionic autonomic motor neurons :
a. Hypoglossal nucleus
b. Nucleus solitaries
c. Facial Nucleus
d. Nucleus ambiguous
10. Which of the following nuclei receive axons from or contribute axons to the facial nerve
a. Main sensory nucleus of V
b. Spinal nucleus of V
c. Nucleus ambiguous
d. Nucleus solitarius
11. A neuron in the left nucleus may :
a. Project an axon directly to the left ventral horn of the spinal cord
b. Receive a direct synaptic connection from a neuron in the left cerebellum
c. Project an axon directly to the right inferior olive
d. Receive a direct axonal projection from a neuron in the left motor cortex
12. Which of the following is true of the trochlear nucleus AND the occulomotor nucleus :
a. Both contain preganglionic autonomic neurons
b. Both receive connections from the medial longitudinal fasciculus (MLF)
c. Both establish reflex connections with some component of the trigeminal sensory complex
d. Neither innervate branchiomeric muscles
13. Which of the following structures reveive direct synaptic connections from first order sensory
ganglion cells :
a. Cerebellum
b. Main sensory nucleus of V
c. Lateral vestibular nucleus
d. Medial superior olive
14. Which of the following is/are true of the left lateral vestibulospinal tract
a. It increases extensor muscle tone on the left side of the body
b. It originates partially from neurons in the right lateral vestibular nucleus
c. It provides an indirect pathway over which the cerebellum can influence the spinal cord
15. An axon coursing through the left medial longitudinal fasciculus (MLF) may originate from which
of the following :
a. A neuron in the right cochlear nucleus
b. A neuron in the right vestibular nuclear complex
c. A neuron innervations the macula of the utriculus
d. A neuron in the right abducens nucleus
Answers :
1/ 4
2/ 2
3/ 4
4/ 4
5/ 1
6/ 3
7/ 1
8/ 2
9/ 4
10/ 4
11/ 3
12/ 3
13/ 1
14/ 2
15/ 3