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What nerve innervates the muscle for tight closure of the eyelids?
Wiki User
∙ 10y ago
The facial or 7th crainial nerve. If you have Bell's palsey, (CN 7 palsey) one side of your face will have problems closing your eye and controling that whole side of your face.
Take Care!
Dr. Dan
Wiki User
∙ 10y ago
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What is the psoas nerve?
The psoas nerve is the nerve that innervates the psoas major muscle. It is formed by fibers of spinal nerves L2-L4.
Cranial nerve involved in vision and visual fields?
The optic nerve (purely sensory; carry afferent impulses for vision) Oculomotor (innervates four of the extrinsic eye muscles) Trochlear (innervates an extrinsic eye muscle that hooks through a pulley-shaped ligament in the orbit) Abducens (innervates the muscle that turns abducts the eyeball)
What muscle and nerve will you need to isolate to study the physiology of nerve fibers?
To study the physiology of nerve fibers, you would need to isolate a specific muscle and the nerve innervating that muscle. This allows for the investigation of the interaction between the nerve and muscle, observing the transmission of signals and studying the response of the muscle to nerve stimulation. Commonly studied muscles and nerves in this context include the gastrocnemius muscle and the sciatic nerve in animal models.
What nerve governs most of the extrinsic eye muscle?
Trochlear Nerve innervates Superior Oblique(extrinsic eye muscle)Oculomotor Nerve innervates Inferior Oblique, Superior Rectus, Inferior Rectus, and Medial Rectus (which are all extrinsic eye muscles) along with Ciliary Body, and the Iris (which are both intrinsic eye muscles)Abducens Nerve innervates Lateral Rectus(extrinsic eye muscle)
How small can a nerve be?
he trochlear nerve (the fourth cranial nerve, also called the fourth nerve, IV) is a motor nerve (a "somatic efferent" nerve) that innervates a single muscle: thesuperior oblique muscle of the eye.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.
What major nerve innervates the extensors of the leg?
sciatic nerve
What is autonomic motor neurons?
a nerve cell forming part of a pathway along which impulses pass from the brain or spinal cord to a muscle or gland.
What is the specific nerve that innervates the cochlea?
Auditory Nerve from brain to ear.
When a single neuron sends a strong enough impulse to a muscle that how many muscle fibers does it cause to contract?
This will depend upon the number of muscle fibers the nerve innervates. However, all fibers innervated by the nerve should contract in response to the neuronal impulse.
Which nerve innervates knee extension?
OBTURATOR
What nerve innervates all the muscles of the tongue except palatglossus?
hypoglossal nerve
Which cranial nerve used in anatomy of ear?
The vestibulocochlear nerve innervates the ear.
