Question

check your recall
1 axons are grouped into bundles called, which are wrapped in a connective tissuesheath called the
a nerve fibers, epineurium c nerve fibers, perineurium
b fascicles, epineurium d fascicles, perineurium
2 the main nerve of the parasympathetic nervous system is the
a. hypoglossal nerve c. trochlear nerve.
b. vagus nerve. d. trigeminal nerve
3 which of the following cranial nerves is a mixed motor and sensory nerve?
a. optic nerve c. hypoglossal nerve.
b. glossopharyngeal nerve d. abducens nerve
4 matching: match the cranial nerve with its main functions.
facial nerve a. vision
trochlear nerve b. motor to the muscles of swallowing, taste to the posterior one - third
hypoglossal nerve of the tongue
oculomotor nerve c. motor to the muscles of swallowing and speaking; motor to the
vagus nerve thoracic and abdominal viscera
olfactory nerve d. motor to four of six extrinsic eye muscles; dilates the pupil, opens the
eye, and changes the shape of the lens
abducens nerve e. motor to the trapezius and sternocleidomastoid muscles
glossopharyngeal nerve f. motor to one of six extrinsic eye muscles (superior oblique muscle)
vestibulocochlear nerve g. motor to the muscles of facial expression; taste to the anterior two -
optic nerve thirds of the tongue
trigeminal nerve h. motor to one of six extrinsic eye muscles (lateral rectus muscle)
accessory nerve i. motor to the tongue
j. olfaction (smell)
k. hearing and equilibrium
l. sensory to the face; motor to the muscles of mastication
5 the portion of a spinal nerve that serves the upper limbs, lower limbs, and much of the trunk is the
a. anterior ramus. c. posterior root ganglion.
b. meningeal branch. d. posterior ramus.
6 stretch is detected by
a. motor efferent neurons. c. muscle spindles.
b. golgi tendon organs. d. motor afferent neurons.

Explanation:

1. Axons grouped into bundles (fascicles) with perineurium wrapping.
2. Vagus nerve is main in parasympathetic.
3. Glossopharyngeal is mixed motor - sensory.
4. Match cranial nerves to functions (e.g., Facial - G, Trochlear - F, etc.).
5. Anterior ramus serves limbs and trunk.
6. Muscle spindles detect stretch.

Answer:

1. d. fascicles, perineurium
2. b. vagus nerve
3. b. Glossopharyngeal nerve

4.
Facial nerve - G
Trochlear nerve - F
Hypoglossal nerve - I
Oculomotor nerve - D
Vagus nerve - C
Olfactory nerve - J
Abducens nerve - H
Glossopharyngeal nerve - B
Vestibulocochlear nerve - K
Optic nerve - A
Trigeminal nerve - L
Accessory nerve - E

1. a. anterior ramus
2. c. muscle spindles