Anatomy Test 2

Question 1

CN I

Answer 1

olfactory nerve, sensory

Question 2

CN II

Answer 2

optic nerve, sensory

Question 3

CN III

Answer 3

oculomotor, motor

Question 4

CN IV

Answer 4

Trochlear, motor

Question 5

CN V

Answer 5

Trigeminal nerve, sensory and motor

Question 6

CN VI

Answer 6

Abducens, motor

Question 7

CN VII

Answer 7

Facial nerve, motor and sensory

Question 8

CN VIII

Answer 8

vestibular cochlear nerve, sensory

Question 9

CN IX

Answer 9

glossopharyngeal nerve, motor and sensory

Question 10

CN X

Answer 10

Vagus nerve, motor and sensory

Question 11

CN XI

Answer 11

accessory nerve, motor

Question 12

CN XII

Answer 12

hypoglossal merve, motor

Question 13

3 divisions of the trigeminal nerve

Answer 13

ophthalmic division (CN V1), maxillary division (CN V2), mandibular division(CN V3)

Question 14

Components of the brain

Answer 14

Cerebrum, cerebellum, and brainstem

Question 15

Divisions of the nervous system

Answer 15

Central(brain + spinal cord) and peripheral(sensory and motor)

Question 16

4 regions of the cortex

Answer 16

Motor, visual, somato sensory, auditory

Question 17

Broca area

Answer 17

Works in conjunction with the motor cortex to allow us to speak

Question 18

Wernicke’s area

Answer 18

Works with auditory cortex to allow us to understand spoken language

Question 19

Function of CN I

Answer 19

Olfactory bulb to cerebrum, sense of smell

Question 20

Function of CN II

Answer 20

Optic nerve to optic chiasm - 1/2 of info from each eye crosses to synchronize in visual cortex

Question 21

Function of CN III

Answer 21

Eye movement and pupil dilation

Question 22

function of CN IV

Answer 22

Eye movement downward and outward

Question 23

Function of CN V

Answer 23

Motor to mastication muscles (master, temporalis) sensory to entire face- nasal and oral cavities, teeth, some scalp

Question 24

Function of CN VI

Answer 24

Lateral eye movement

Question 25

Function of CN VII

Answer 25

Facial expression muscles, tear production and salivation, taste to anterior 2/3 of tongue

Question 26

Function of CN VIII

Answer 26

Hearing and equilibrium (balance) → vestibula

Question 27

Function of CN IX

Answer 27

Motor: pharynx muscle Sensory: taste posterior 1/3 of tongue, increases salivation , gag reflex

Question 28

Function of CN X

Answer 28

Motor: most swallowing and vocal muscles Sensory: taste back of mouth Controls heart rate gi tract, sweating, and inflammatory response

Question 29

Function of CN XI

Answer 29

Innovates sternocleidomastoid and upper trapezius muscles

Question 30

Function of CN XII

Answer 30

most tongue muscles If there is damage tongue points to damaged side

Question 31

Divisions of the spinal cord

Answer 31

Cervical nerves, thoracic nerves, lumbar nerves, and sacral nerves

Question 32

What are the three plexuses?

Answer 32

Cervical plexus (C1-C5): 8 nerves, neck muscles, diaphragm Brachial plexus (C5-T1): 12 nerves, upper limb muscles Lumbosachral plexus (L1-S4): 5 nerves, lower limbs and pelvic girdle muscles

Question 33

What nerves make up the brachial plexus?

Answer 33

Anterior: musculocutaneous nerve and median nerve Posterior: axillary nerve, ulnar nerve, radial nerve

Question 34

Nerves in lumbosachral plexus

Answer 34

Femoral nerve (anterior thigh), obturator nerve (medial thigh), sciatic nerve (posterior thigh and entire leg)

Question 35

3 layers of the eye

Answer 35

Fibrous outer layer, vascular middle layer, neural inner layer

Question 36

Parts of the fibrous outer layer of the eye

Answer 36

Sclera and cornea

Question 37

Parts of the vascular middle layer of the eye

Answer 37

Choroid, ciliary body, iris

Question 38

Parts of the neural inner layer of the eye

Answer 38

Retina

Question 39

Sympathetic vs parasympathetic nervous system

Answer 39

Parasympathetic- rest and digest Sympathetic - fight or flight

Question 40

Muscles of the iris

Answer 40

2 muscles innervated by the autonomic nervous system Sphincter pupillae: muscle contracts, pupil contracts Dilator pupillae: muscle contracts, pupil dilates

Question 41

6 extrinsic eye muscles

Answer 41

Superior oblique, inferior oblique, medial rectus, lateral rectus, superior rectus, inferior rectus

Question 42

3 regions of the ear

Answer 42

External, middle, inner

Question 43

What are ossicles?

Answer 43

Mechanically transduce and amplify sound waves

Question 44

How does cochlea sense sound

Answer 44

1. Sound waves vibrate ear drum 2. Ossicles amplify and vibrate oval window 3. Pressure waves move through perilymph 4. Specialized cells (hair cells) in cochlear duct bend and signal is transmitted

Question 45

Top and bottom of the heart

Answer 45

Apex : pointed inferior end Base: rounded superior end

Question 46

What does the left side of the heart do?

Answer 46

Pumps blood to body: systematic circulation

Question 47

What does the right side of the heart do?

Answer 47

Pumps blood to lungs - pulmonary circulation