Exam 1 Part 8

Question 1

Innervates the diaphragm, which is the primary muscle for inspiration of air into the lungs needed for phonation

Answer 1

Phrenic nerve

Question 2

Where does the spinal nerve originate and course out?

Answer 2

Originates in gray matter of spinal cord, course out of vertebral column into soft tissues

Question 3

Nerves that innervate the muscles of the head, face, and neck; connect muscles and structures of the head, face, and neck to the CNS

Answer 3

Cranial nerves

Question 4

The retinas receive light from the _______ side of the environment

Answer 4

Opposite

Question 5

Nerve that conducts sensory signals from eyes

Answer 5

Optic nerve

Question 6

The point where the left and right optic nerves come together and medial fibers decussate

Answer 6

Optic chiasma

Question 7

What are the 3 branches of the trigeminal nerve?

Answer 7

Ophthalmic, maxillary, mandibular

Question 8

Sensory info from upper face, forehead, scalp to CNS

Answer 8

Ophthalmic

Question 9

Is ophthalmic sensory, motor or both?

Answer 9

Sensory

Question 10

Sensory info from teeth, upper lip, buccal, nasal cavities, sides of face to CNS

Answer 10

Maxillary

Question 11

Is maxillary sensory, motor, or both?

Answer 11

Sensory

Question 12

Sensory info from lower teeth, lower gums, bottom lips, portions of tongue to CNS; Motor info to muscles for mastication

Answer 12

Mandibular

Question 13

Is mandibular sensory, motor, or both?

Answer 13

Both

Question 14

Cranial nerve that functions as sensory (taste) info from anterior 2/3 of tongue

Answer 14

Facial

Question 15

What are the 4 branches of the facial nerve?

Answer 15

Temporal, zygomatic, buccal, mandibular