cranial nerves

How many pairs of cranial nerves are found in mammals?

• 10
• 12
• 14
• 8

Which cranial nerve is responsible for motor innervation to the muscles of facial expression?

• Trigeminal nerve (CN V)
• Facial nerve (CN VII)
• Vagus nerve (CN X)
• Hypoglossal nerve (CN XII)

The vestibulocochlear nerve (CN VIII) is responsible for which primary functions?

• Vision and balance
• Hearing and equilibrium
• Swallowing and taste
• Smell and proprioception

Which cranial nerve provides parasympathetic innervation to the heart, lungs, and digestive tract?

• Accessory nerve (CN XI)
• Hypoglossal nerve (CN XII)
• Vagus nerve (CN X)
• Glossopharyngeal nerve (CN IX)

Damage to which cranial nerve can lead to difficulty in tongue movement and speech impairment?

• Trigeminal nerve (CN V)
• Glossopharyngeal nerve (CN IX)
• Hypoglossal nerve (CN XII)
• Facial nerve (CN VII)

The trochlear nerve (CN IV) primarily controls which muscle?

• Medial rectus
• Superior oblique
• Inferior oblique
• Lateral rectus

Which of the following cranial nerves is purely sensory?

• Abducens nerve (CN VI)
• Facial nerve (CN VII)
• Vestibulocochlear nerve (CN VIII)
• Oculomotor nerve (CN III)

The trigeminal nerve (CN V) is responsible for which of the following functions?

• Taste sensation from the anterior two-thirds of the tongue
• Sensory innervation of the face and motor control of mastication
• Movement of the eyeball
• Regulation of heart rate

Which cranial nerve has both sensory and motor components and plays a role in swallowing?

• Optic nerve (CN II)
• Glossopharyngeal nerve (CN IX)
• Hypoglossal nerve (CN XII)
• Abducens nerve (CN VI)

The spinal accessory nerve (CN XI) primarily innervates which muscles?

• Sternocleidomastoid and trapezius
• Masseter and temporalis
• Superior rectus and inferior rectus
• Orbicularis oris and orbicularis oculi