Cranial Nerves

Question 1

What are the cranial nerves? (Definition)

Answer 1

The cranial nerves are a set of 12 paired nerves in the back of your brain. Cranial nerves send electrical signals between your brain, face, neck and torso.

Question 2

Olfactory nerve (1)

Answer 2

Function: Sense of smell

Question 3

Optic nerve (2)

Answer 3

Function: Sense of sight

Question 4

Oculometer (3)

Answer 4

Function: Movement of eyeball, constriction of pupil for bright light or near vision
Location: Midbrian

Question 5

Trochlear (4)

Answer 5

Function: Movement of eyeball
Location: Midbrain

Question 6

Trigeminal (5)

Answer 6

Function: Sensation in face, scalp, and teeth, contraction of chewing muscles
Location: The pons

Question 7

Abducens (6)

Answer 7

Function: Movement of eyeball
Location: The pons

Question 8

Facial (7)

Answer 8

Function: Sense of taste, contraction of facial muscles, secretion of saliva
Location: The pons

Question 9

Vestibulochlear (8)

Answer 9

Function: Sense of hearing, sense of equillibrium
Location: The pons/ medulla oblangata

Question 10

Glosspharyngeal (9)

Answer 10

Function: Sense of taste, secretion of saliva, sensory input for cardiac, respiratory, and blood pressure reflexes, contraction of pharynx (swallowing)
Location: Medulla oblangata

Question 11

Vagus (10)

Answer 11

Function: sensory input for cardiac, respiratory, and blood pressure reflexes, sensory and motor input to larynx (speaking), decreased heart rate, contraction of alimentary tube (swallowing), increased digestive secretions
Location: Medulla

Question 12

Accessory (11)

Answer 12

Function: Contraction of neck and shoulder muscle, motor input to larynx (talking)
Location: Medulla

Question 13

Hypoglossal (12)

Answer 13

Function: Movement of tongue
Location: Medulla

Question 14

What cranial nerves are located in the medulla oblangata?

Answer 14

Vestibulochlear, glossopharyngeal, vagus, accessory, hypoglossal (8,9,10,11,12)

Question 15

What cranial nerves are located in the pons?

Answer 15

Trigeminal, abducens, facial, vestibulochlear (5,6,7,8)

Question 16

What cranial nerves located in brain stem?

Answer 16

Oculomotor, trochlear (3,4)