Which cranial nerve carries motor commands to the chewing muscles?

The trigeminal nerve is the cranial nerve that carries motor commands to the chewing muscles.

Which cranial nerve is responsible for chewing?

The trigeminal nerve is responsible for sensory enervation of the face and motor enervation to muscles of mastication (chewing).

Which cranial nerve does not carry motor commands to an eye muscle?

Which cranial nerve does not carry motor commands to an eye muscle? Motor nerve to the lateral rectus muscle. (abducens nerve?)

Which cranial nerve is motor?

There are four cranial nerves with primarily motor function. Link to Corticobulbar. CN IV, Trochlear, innervates the superior oblique muscle of the eyeball. CN VI, Abducens, innervates the lateral rectus muscle of the eyeball and abducts the eye.

What do the 12 cranial nerves control?

Motor nerves control the movement and function of muscles or glands. Keep reading to learn more about each of the 12 cranial nerves and how they function.

  • Left olfactory nerves.
  • Left olfactory bulb.
  • Left olfactory tract.
  • Left optic nerve.
  • Left oculomotor nerve.
  • Left trochlear nerve.
  • Left trigeminal nerve.
  • Left abducens nerve.
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Which nerve does not play a role in swallowing?

Glossopharyngeal nerve lesions produce difficulty swallowing; impairment of taste over the posterior one-third of the tongue and palate; impaired sensation over the posterior one-third of the tongue, palate, and pharynx; an absent gag reflex; and dysfunction of the parotid gland.

Which cranial nerve is responsible for the production of saliva?

Cranial Nerve 9 – Glossopharyngeal (IX)

Parasympathetic fibers stimulate the secretion of saliva from the parotid gland.

Is cranial nerve 3 sensory or motor?

Table of cranial nerves

No. Name Sensory, motor, or both
II Optic Sensory
III Oculomotor Mainly motor
IV Trochlear Motor
V Trigeminal Both sensory and motor

The facial nerve (cranial nerve VII) is responsible for the muscles that determine facial expression, as well as the sensation of taste in the front of the tongue and oral cavity.

What nerve is responsible for hearing?

The vestibular nerve is primarily responsible for maintaining body balance and eye movements, while the cochlear nerve is responsible for hearing.

What is the signs of nerve damage?

The signs of nerve damage

  • Numbness or tingling in the hands and feet.
  • Feeling like you’re wearing a tight glove or sock.
  • Muscle weakness, especially in your arms or legs.
  • Regularly dropping objects that you’re holding.
  • Sharp pains in your hands, arms, legs, or feet.
  • A buzzing sensation that feels like a mild electrical shock.

What is the largest cranial nerve?

The trigeminal nerve is the largest and most complex of the 12 cranial nerves (CNs). It supplies sensations to the face, mucous membranes, and other structures of the head. It is the motor nerve for the muscles of mastication and contains proprioceptive fibers.

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Which is the smallest nerve in human body?

The trochlear nerve is unique among the cranial nerves in several respects: It is the smallest nerve in terms of the number of axons it contains. It has the greatest intracranial length.

What is the 12th cranial nerve?

The Hypoglossal Nerve is the 12th Cranial Nerve (Cranial Nerve XII). … The nerve originates from the medulla and travels caudally and dorsally to the tongue.

How do you test for the 12 cranial nerves?

The 12th (hypoglossal) cranial nerve is evaluated by asking the patient to extend the tongue and inspecting it for atrophy, fasciculations, and weakness (deviation is toward the side of a lesion).

What is the sixth cranial nerve?

It’s also known as the abducens nerve. This condition causes problems with eye movement. The sixth cranial nerve sends signals to your lateral rectus muscle. This is a small muscle that attaches to the outer side of your eye.