A&P Cranial Nerves Lab

CN XI (11)

Accessory nerve (motor) function: innervates structures in neck/shoulders. (all motor)-damage effects posture.

what cranial nerve(s) involved in smell?

CN I

what cranial nerve(s) involved in vision?

CN II (2)

what cranial nerve(s) innervate extrinsic eye muscles?

CN III (3), CN IV (4), and CN VI (6) Hint: extrinsic-originates outside of that anatomical part

what cranial nerve(s) innervate intrinsic eye muscles?

CN III Hint: intrinsic-lies within/belongs to

what cranial nerve(s) involved in control of blood pressure?

CN IX (9) an CN X (10)

what cranial nerve(s) innervate the muscles of the tongue?

CN IX (9) and CN XII (12)

what cranial nerve(s) involved in facial expression and lacramation?

CN VII (7)

what cranial nerve(s) involved in salivation?

CN VII (7) and CN IX (9)

what cranial nerve(s) involved in taste?

CN VII (7), CN IX (9), CN X (10)

what cranial nerve(s) involved in hearing and equilibrium?

CN VIII (8)

what cranial nerve(s) innervate neck muscles?

CN XI (11)

what cranial nerve has 5 branches (Temporal, Zygomatic, Buccal, Mandibular, and Cervical) ?

facial nerve

what cranial nerve has 2 branches?

vestibulocochlear nerve

CN I

olfactory nerve (sensory)-funtion: smell

mnemonic: Oh Oh Oh To Touch And Feel Very Good Velvet AH

olfactory, optic, occulomotor, trochlear, trigeminal, abducens, facial, vestibulocochleal, glossopharyngeal, vagus, accessory, hypoglossal.

CN II

optic nerve (sensory)-function: sight

mnemonic # 2:

some say marry money but my brother says big breasts matter more

what cranial nerve has 3 branches (2 sensory and 1 motor) ?

trigeminal nerve

what cranial nerve(s) innervate the major chewing muscles?

trigeminal nerve

CN III

Occulomotor nerve (motor)-function: involved in eye movement, control amount of light going in the eye, and controls shape of lense.

CN V (5)

Trigeminal nerve (mixed)-function: motor-chewing/biting ex.TMJ. sensory: sensations from face and eye. Detection from touch/temp. Forehead to face. Hint: 3 twins

CN IV (4)

Trochlear nerve (motor)-function: involved in movement of the eye by the (superior oblique muscle). Hint: looks like a pully

CN VI (6)

Abducens nerve (motor)-function: sides of the eye ball/moves eye balls to the side by the lateral rectus muscle.

How many pairs of cranial nerves are there?

12 pairs

CN VII (7)

Facial nerve (mixed)-function: motor-facial expression ex. frightened/smile/ salivation (saliva), lacramation (make tears). Sensory-taste (three parts of the tongue (2/3 facial) Hint: damage-crocodile tears syndrome/spontaneous crying.

CN IX (9)

Glossopharyngeal nerve (mixed)-function: motor-swallowing/salivationg. Sensory-taste (back of the tongue), regulates blood pressure/gases,sensation from throat. Hint: glosso-tongue/pharyngeal-throat.

CN XII (12)

Hypoglossal nerve (motor) function: innervates muscles of the tongue (movements).

CN X (10)

Vagus nerve (mixed) function: motor-heart rate , GI tract movements, amount of air in lungs;secretions. Sensory-blood pressure/gases, taste (innervates epiglottis)-taste sensation. Hint: wanderer-if you cut it you will die....

CN VIII (8)

Vestibulocochlear nerve (sensory)-function: hearing/equilibrium