CRN

Question 1

What number is the Olfactory nerve and what is it’s function.

Answer 1

CRN 1 (I)
Smell

Question 2

What number is the Optic nerve and what is it’s function.

Answer 2

CRN 2 (II)
Vision

Question 3

What number is the Oculomotor nerve and what is it’s function.

Answer 3

CRN 3 (III)
Moves the eyeball, eyelid, adjusts the lens of the eye of near vision and constrict the pupil of the eye.

Question 4

What number is the Trochlear nerve and what is it’s function.

Answer 4

CRN 4 (IV)
Moves the eyeballs

Question 5

What number is the Trigeminal nerve and what is it’s function.

Answer 5

CRN 5 (V)
Splits into 3 divisions and Controls the facial muscles

Question 6

What number is the Abducens nerve and what is it’s function.

Answer 6

CRN 6 (VI)
Moves the eyeballs outwards

Question 7

What number is the Facial nerve and what is it’s function.

Answer 7

CRN 7 (VII)
Taste, Tears, Saliva and Facial expressions.

Question 8

What number is the Vestibulocochlear nerve and what is it’s function.

Answer 8

CRN 8 (VIII)
Vestibuar - senses equalibrium
Cochlear - Hearing

Question 9

What number is the Glossopharyngeal nerve and what is it’s function.

Answer 9

CRN 9 (IX)
Motor Fibres - Swallowing and secretion of saliva
Sensory Fibres - Mointers blood pressure, oxygen and CO2 in blood, taste, touch, pain and temperature from the posterior third of the tongue and soft palate.

Question 10

What number is the Vagus nerve and what is it’s function.

Answer 10

CRN 10 (X)
Interfaces with the parasympathetic nervous system

Question 11

What number is the Accesory nerve and what is it’s function.

Answer 11

CRN 11 (XI)
Arises from two roots
Cranial - controls swallowing movements
Spinal - governs movement of the head and shoulders

Question 12

What number is the Hypoglossal nerve and what is it’s function.

Answer 12

CRN (XII)

Supplies muscles of the tongue, responsible for movement of speech and swallowing.