Sensory/ Motor Information About the Cranial Nerves

Question 1

Describe the Function and the Origin of Olfactory Nerve (I)

Answer 1

Function - Smell

Origin - Cerebral Hemisphere

Question 2

Describe the Function and the Origin of the Optic Nerve (II)

Answer 2

Function - Vision

Origin - Thalamus

Question 3

Describe the Function and the Origin of Oculomotor Nerve (III)

Answer 3

Function - Pupil, eye movement

Origin - Midbrain

Question 4

Describe the Function and the Origin of Trochlear (IX)

Answer 4

Function - eye movement (down and in)

Origin - Midbrain

Question 5

Describe the Function and the Origin of the Trigeminal (V)

Answer 5

Function: Sensory - somatic sensation (Face, lips and jaw)
Motor: Muscles of mastication
Origins - Pons

Question 6

Describe the Function and the Origin of the Abducens (VI)

Answer 6

Function - Eye movement (side and out)

Question 7

Describe the Function and the Origin of the Facial (VII)

Answer 7

Function: Sensory - taste, anterior 2/3 of the tongue
Motor: Lips and facial movement, expression

Question 8

Describe the Function and the Origin of the Vestibulocochlear (VIII)

Answer 8

Function: Hearing and balance
Origin: Pons

Question 9

Describe the Function and the Origin of the Glossopharyngeal (IX)

Answer 9

Function: Sensory: Taste, posterior 1/3 tongue
Motor: Pharynx movement (superior portion)
Origin: Medulla

Question 10

Describe the Function and the Origin of the Vagus (X) Nerve

Answer 10

Function: Sensory: larynx, pharynx, abdominal viscera
Motor: Larynx, pharynx, velum movement
Origin: Medulla

Question 11

Describe the Function and the Origin of Accessory (XI)

Answer 11

Function: Shoulder and neck muscles also assists the vagus nerve movement
Origin: Medulla, Spinal Cord

Question 12

Describe the Function and the Origin of Hypoglossal (XII)

Answer 12

Function: tongue movement
Origin: Medulla