Neils Saucy Study Tips Part 1

Question 1

Width of neuron

Answer 1

10x10^-6 m

Question 2

Volume of the human brain

Answer 2

1300 cc

Question 3

What are the components of the meninges?

Answer 3

dura mater, arachnoid mater, and pia mater

Question 4

Dura mater

Answer 4

part of the meninges, tough, dense membrane, composed mostly of collagen fibres

Question 5

Arachnoid mater

Answer 5

thin, non-vascular membrane. CSF is in here and meningitis can happen in here

Question 6

Pia mater

Answer 6

a delicate membrane that closely covers the surface of the brain down to depths of the sulci

Question 7

Cranial Nerve I Function

Answer 7

Olfactory nerve, Smell

Question 8

Cranial Nerve II Function

Answer 8

Optic Nerve, Vision

Question 9

Cranial Nerve III Function

Answer 9

Oculomotor nerve, movement of eyes, pupillary constriction and accomodation

Question 10

Cranial nerve IV Function

Answer 10

Trochlear nerve, movement of eyes

Question 11

Cranial Nerve V fucntion

Answer 11

Trigeminal nerve, muscles of mastication and eardrum tension, sensations from face, nose, mouth, and meninges

Question 12

Cranial Nerve VI function

Answer 12

Abducent nerve, movement of eyes

Question 13

Cranial Nerve VII function

Answer 13

Facial nerve, muscles of facial expression, tension on ear bones, lacrimation, salivation, taste, visceral sensory

Question 14

Cranial Nerve VIII function

Answer 14

Vestibulocochlear nerve, hearing and equillibrium

Question 15

Cranial Nerve IX function

Answer 15

Glossopharyngeal nerve, swallowing movements, salivation, taste, visceral sensory

Question 16

Cranial Nerve X function

Answer 16

Vagus nerve and cranial root of XI, parasympathetics to thoracic and abdominal viscera, taste, visceral sensory

Question 17

Cranial Nerve XI function

Answer 17

Spinal accessory nerve (spinal root), movements of the shoulder and head

Question 18

Cranial nerve XII function

Answer 18

hypoglossal nerve, movements of the tongue

Question 19

Cranial Nerve III LESION

Answer 19

produces eyelid drooping, pupil dilation, pupils pointed at temple

Question 20

Cranial Nerve IV LESION

Answer 20

vertical diplopia, eye extorts

Question 21

Cranial Nerve V LESION

Answer 21

result in loss of jaw reflex, loss of ipsilateral nostril sensitivity, loss of ipsilateral corneal sensation, trigeminal neuralgia

Question 22

Cranial Nerve VI LESION

Answer 22

horizontal diplopia, pupil pulled inward

Question 23

CN VII LESION

Answer 23

Bell’s palsy (paralysis of facial expression)

Question 24

CN VIII FAILURE

Answer 24

excessive vestibular stimulation may result in nystagmus (to and fro eye movement)

Question 25

CN IX LESION

Answer 25

result in losing taste, losing gag reflex, and loss of the carotid sinus reflex

Question 26

CN X LESION

Answer 26

difficulty swallowing, breathing, speaking, and bilateral lesions are fatal due to larynx paralysis

Question 27

CN XII LESION

Answer 27

unilateral tongue paralysis

Question 28

CN XI LESION

Answer 28

shoulder and head movement impaired