Trochlear Nerve Flashcards Preview

Spinal Anatomy I - Exam 3 > Trochlear Nerve > Flashcards

Flashcards in Trochlear Nerve Deck (10):
1

What type of motor fibers to skeletal muscle are given off by the trochlear nerve?

somatic efferent (SE)

2

What is the embryonic origin of skeletal muscles innervated by the trochlear nerve?

the skeletal muscle is derived from the somites hence somatic efferent (SE)

3

At its apparent origin cranial nerve IV conveys which classification of neural pathways?

somatic efferent pathway

4

What is the location for multipolar SE neurons of the fourth cranial nerve?

trochlear motor nucleus

5

The fourth cranial nerve's apparent origin is from what location?

dorsal surface of the midbrain

6

Somatic efferent fibers from the left nucleus of the fourth cranial nerve will have an apparent origin from which side?

right side

7

What unique feature of the fourth cranial nerve occurs within the midbrain?

it decussates

8

What are the two unique features of the fourth cranial nerve?

- it is the only cranial nerve with an apparent origin from the dorsal surface of the brain
- it is the only cranial efferent nerve to decussate within the midbrain from its nucleus

9

The right fourth cranial nerve will innervate which side target muscle?

the right side muscle

10

SE fibers from the fourth cranial nerve will innervate which muscle?

superior oblique

Decks in Spinal Anatomy I - Exam 3 Class (94):