Exam Block 2

Question 1

I

Answer 1

Olfactory

Question 2

II

Answer 2

Optic

Question 3

III

Answer 3

Oculomotor

Question 4

IV

Answer 4

Trochlear

Question 5

V

Answer 5

Trigeminal

Question 6

VI

Answer 6

Abducens

Question 7

VII

Answer 7

Facial

Question 8

VIII

Answer 8

Auditory (Vestibulocochlear)

Question 9

IX

Answer 9

Glossopharyngeal

Question 10

X

Answer 10

Vagus

Question 11

XI

Answer 11

Spinal Accessory

Question 12

XII

Answer 12

Hypoglossal

Question 13

Olfactory

Answer 13

Sensory

Olfactory information (sense of smell) from nasal epithelium to Brain

Question 14

Optic

Answer 14

Sensory

Visual information sent from retina of eye to the Brain

Question 15

Oculomotor

Answer 15

Motor

Contraction of the majority of Extrinsic Eye Muscles
(rectus and obliques) and eyelid (levator Palpibrae) for eye movement and blinking (except lateral rectus, superior Oblique) Controls Iris Contraction (Pupil Diameter) and Accommodation (lens shape) for focusing.

Question 16

Trochlear

Answer 16

Motor

Contraction of the Superior Oblique extrinsic eye muscle; will coordinate with Nerve III and VI signals

Question 17

Trigeminal

Answer 17

Mixed (Both)

“The Dentist’s Nerve” ; 3 branches
Opthalmic (eye), Maxillary (upper face, palate), Mandibular (Lower Jaw)

Sensory
General Sensation for head/mouth
Temperature (hot/cold), Pressure (touch), Pain signals from face, mouth

Motor
Motor signals to muscles of mastication (Temporalis, Masseter), and Ear

Question 18

Abducens

Answer 18

Motor

Contraction of the Lateral Rectus extrinsic eye muscle will coordinate with Nerve III and VI signals

Question 19

Facial

Answer 19

Mixed (Both)

Sensory
Taste sensations from taste buds on anterior 2/3 tongue, Proprioception from facial muscles

Motor
Contraction of muscles of facial expression
(frontalis, zygomatic, orbicularis oculi and oris)

Question 20

Auditory (Vestibulocochlear)

Answer 20

Sensory

Hearing signals from cochlea to brain
Balance, equilibrium signals from vestibule, semicircular canals to brain

Question 21

Glossopharnygeal

Answer 21

Mixed (both)

Sensory
Taste sensations from taste buds on posterior 2/3 Tongue
blood pressure, pCO2, and pO2 monitoring to medulla

Motor
Contraction of muscles for swallowing (palatini, pharyngeus, hyoid)
activates salivary secretions

Question 22

Vagus

Answer 22

Mixed (Both)

Sensory
Cardiac rate monitoring to medulla
Blood pressure, pCO2, and pO2 monitoring to medulla
taste from throat, regulates GI function

Motor
Contraction of muscles for swallowing, coughing, speech
inhibits cardiac rate
stimulates GI function, movement, and secretion

Question 23

Spinal Accessory

Answer 23

Motor

Contraction of Sternocleidomastoid, Trapezius (head and shoulders)

Question 24

Hypoglossal

Answer 24

Motor

Contraction of tongue for swallowing and speaking