Table of Contents
- 1 What controls the majority of the extrinsic eye muscles?
- 2 Which nerve is responsible for most eye muscles?
- 3 Which cranial nerve Innervates extrinsic eye muscles quizlet?
- 4 What does abducens nerve do?
- 5 What nerve controls 4 of the 6 extrinsic eye muscles?
- 6 Which cranial nerve does not innervate the extrinsic eye muscles quizlet?
What controls the majority of the extrinsic eye muscles?
Extraocular eye muscles and their functions All seven of these eye movement muscles are controlled by three cranial nerves: the oculomotor nerve, trochlear nerve and abducens nerve.
Which nerve is responsible for most eye muscles?
The oculomotor nerve is the third cranial nerve (CN III). It allows movement of the eye muscles, constriction of the pupil, focusing the eyes and the position of the upper eyelid. Cranial nerve III works with other cranial nerves to control eye movements and support sensory functioning.
What nerves control the eye muscles?
The muscles that act on and around the eyes receive innervation from four cranial nerves and the sympathetic nervous system.
- Oculomotor Nerve.
- Trochlear Nerve.
- Abducens Nerve.
- Facial Nerve.
- Sympathetic Nervous System.
What extrinsic muscle controls the movement of eyes?
The extraocular muscles are the six muscles that control movement of the eye (Superior rectus, Inferior rectus, Lateral rectus, Medial rectus, Superior oblique and Inferior oblique) and one muscle that controls eyelid elevation (levator palpebrae).
Which cranial nerve Innervates extrinsic eye muscles quizlet?
The abducens nerve innervates which extrinsic eye muscle? You just studied 5 terms!
What does abducens nerve do?
The abducens nerve functions to innervate the ipsilateral lateral rectus muscle and partially innervate the contralateral medial rectus muscle (at the level of the nucleus – via the medial longitudinal fasciculus).
What 3 cranial nerves control the extrinsic eye muscles?
The extraocular muscles are innervated by lower motor neurons that form three cranial nerves: the abducens, the trochlear, and the oculomotor (Figure 20.3).
What nerve controls four of the six extrinsic eye muscles?
The annulus of Zinn is a tendinous ring that surrounds the optic nerve and serves as the origin for four of the six extraocular muscles, excluding the inferior oblique muscle and superior oblique muscle.” (We got that quote from Wikipedia.)
What nerve controls 4 of the 6 extrinsic eye muscles?
Which cranial nerve does not innervate the extrinsic eye muscles quizlet?
Terms in this set (3) cranial nerves III, IV, and VI innervate extrinsic eye muscles that move the eyeball. Hypoglossal nerve does not innervate an extrinsic eye muscle and is not tested using the same procedure as cranial nerves III, IV, and VI.