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Neuro > Ch. 10: Midbrain > Flashcards

Ch. 10: Midbrain Flashcards

1
Q

The motor nucleus of the oculomotor nerve is located in the:
A. Tectum
B. Tegmentum

A

B. Tegmentum

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2
Q

The motor tracts from the cerebral cortex descend in the:
A. Tectum
B. Tegmentum
C. Crus cerebri

A

C. Crus cerebri

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3
Q 
The most ascending and descending tracts in the midbrain are located in the:
A. Dorsal area
B. Central tegmentum
C. Tectum and central tegmentum
D. Lateral tegmentum and crus cerebri
A

D. Lateral tegmentum and crus cerebri

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4
Q

T/F: No sensory cranial nerve emerges from the midbrain.

A

True

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5
Q

The trochlear nerve is made axons classified as:
A. General somatic efferent (GSE)
B. General visceral efferent (GVE)

A

A. General somatic efferent (GSE)

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6
Q

The pupillary sphincter muscle is innervated by the:
A. Motor nucleus of the oculomotor nerve
B. Motor nucleus of the trochlear nerve
C. Parasympathetic nucleus of the oculomotor nerve

A

C. Parasympathetic nucleus of the oculomotor nerve

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7
Q

The ciliary muscle is innervated by the:
A. Motor nucleus of the oculomotor nerve
B. Motor nucleus of the trochlear nerve
C. Parasympathetic nucleus of the oculomotor nerve

A

C. Parasympathetic nucleus of the oculomotor nerve

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8
Q 
The reticular formation and red nucleus of the midbrain are part of the:
A. Tegmentum
B. Tectum
C. Substantia nigra
D. Periaqueductal gray
A

A. Tegmentum

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9
Q 
Which of the following is a part of the midbrain?
A. 3rd ventricle
B. Trapezoid body
C. Pyramid
D. Crus cerebri
A

D. Crus cerebri

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10
Q

Which CN crosses the midline to innervate target tissue on the contralateral side of the body?
A. Oculomotor
B. Trochlear
C. Both oculomotor and trochlear

A

B. Trochlear

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11
Q 
The tectum of the midbrain is made of:
A. Lateral geniculate nucleus
B. Rostral and caudal colliculi
C. Pyramids
D. Pineal gland
A

B. Rostral and caudal colliculi

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12
Q 
When severe cerebral edema compresses the midbrain, further increase in intracranial pressure may follow due to CSF accumulation in the:
A. 4th ventricle
B. Subarachnoid space only
C. Central canal
D. Lateral ventricles
A

D. Lateral ventricles

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13
Q 
Which muscle is innervated by the trochlear nerve?
A. Lateral rectus
B. Ventral oblique
C. Medial rectus
D. Dorsal oblique
A

D. Dorsal oblique

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14
Q 
A lesion of the oculomotor nerve induces:
A. Pupillary constriction
B. Medial strabismus
C. Drooped eyelid
D. Blindness
A

C. Drooped eyelid

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15
Q 
The white matter of the midbrain is:
A. Substantia nigra
B. Red nucleus
C. Motor nucleus of the oculomotor nerve
D. Crus cerebri
A

D. Crus cerebri

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Neuro (8 decks)

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