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What eye movement is caused by the superior oblique?
Superior oblique is controlled by cranial nerve VI (Trochlear nerve). This muscle depresses the eye and moves it laterally. A person with damage to this cranial nerve will have difficulty looking down and to the side.
What muscle turns the eye inferior and medially?
The inferior rectus muscle is responsible for turning the eye downward and medially.
What is the smallest cranial nerve?
The smallest cranial nerve is the trochlear nerve (CN IV). It is responsible for controlling the superior oblique muscle of the eye, which helps with downward and inward eye movement.
What cranial nerve is responsible for moving the eye laterally?
There are three cranial nerves that innervates muscle to move the eye. The main cranial nerve that controls eye movement is occulomotor nerve (CN III). It is responsible for inferior rectus, superior rectus, medial rectus, and inferior oblique. Lateral rectus muscle is innervated by abducens nerve (CN VI). Superior oblique muscle is innervated by trochlear nerve (CN III).
Which muscle is innervated by the phrenic nerve?
Diaphragm
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)
Is the orbicularis oculi muscle innervated by the facial nerve?
Yes
What three muscles are innervated by nerves?
Three muscles that are innervated by specific nerves include the biceps brachii, which is innervated by the musculocutaneous nerve; the quadriceps femoris, innervated by the femoral nerve; and the diaphragm, which is innervated by the phrenic nerve. Each of these nerves plays a crucial role in controlling muscle movement and function.
Which nerve controls the movement of the lattisimus dorsi muscle?
The muscle is innervated by Thoracodorsal nerve, from the posterior cord of brachial plexus.
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.
Muscle inserts into the mastoid process?
Posterior Belly of Digastric Muscle (innervated by CN VII) Facial nerve Sternocleidomastoid (innervated by CN XI) Spinal accessory nerve Longissimus Capitis (innervated by dorsal rami of C3-C8 spinal nerves) Splenius Capitis (innervated by dorsal rami of middle cervical spinal nerves)
What muscle of Facial expression is not innervated by facial nerve?
The following facial muscles are innervated by cranial nerve VII (facial nerve):- orbicularis oris (closes lips)- caninus (snarling in a dog)- levator nasolabialis (lifts nose and upper lip)- levator labii superioris (lifts upper lip)- depressor labii inferioris (depresses lower lip)- caudal belly of the digastricus (opens jaw)
