Abducens Nerve: Eye movement
The superior oblique muscle has three primary functions. Explore the function of the muscle it innervates. The trochlear nerve is also known as cranial nerve IV (CN-IV). Identify the course of the trochlear nerve. Match the following cranial nerve with its appropriate function: Vestibulocochlear. The trochlear nerve supplies motor innervation to the dorsal oblique muscle of the contralateral side from its cell bodies of origin. The trochlear nerve is also a part of the cranial nerve which stems from the brain and connect to the eyes. It functions purely as a motor nerve. It is a somatic efferent nerve that innervates the superior oblique muscle, which is important for normal movement of the eyeball. Hypoglossal nerve (XII) anterior. This muscle moves the eyeball up and down and left and right. Trochlear Nerve 4th nerve Each of the fourth pair of cranial nerves, supplying the superior oblique muscle (extraocular muscles) of the eyeball 3. origin it is the only cranial nerve that arises from the back of the brain stem. It is the smallest cranial nerve (by number of axons) and the cranial nerve with the longest intracranial course. It's main function is to rotate the eyeball inwards towards the midline. The trochlear nerve is a motor nerve, and it controls the superior oblique muscle of the eye. superior oblique (SO4- superior oblique supplied by fourth cranial) what runs with the trochlear nerve to the superior oblique? Accessory nerve (XI) Action: swallowing, head and shoulder movement Function: motor. Trochlear nerve (IV) Action: eyeball movement Function: motor. It exits the brain on the dorsal side of the brain stem. VI. Understand some of the common clinical conditions associated with this nerve. Other articles where Trochlear nerve is discussed: human nervous system: Trochlear nerve (CN IV or 4): The fourth cranial nerve is unique for three reasons. Second, fibres from the trochlear nucleus cross … The function of this nerve are interconnected with the superior oblique muscle.

It has a purely somatic motor function.

Olfactory Nerve: Sense of smell Optic Nerve: Vision Oculomotor Nerve: Eyeball and eyelid movement Trochlear Nerve: Eye movement Trigeminal Nerve: This is the largest cranial nerve and is divided into three branches consisting of the ophthalmic, maxillary and mandibular nerves. Innervates an extrinsic eye muscle that loops through a pulley-shaped ligament in the orbit.

Stay tuned for next week, where we’ll be covering CNV (the trigeminal nerve) in detail. Location and Function. Functions controlled include facial sensation and chewing. It is the only cranial nerve that emerges dorsally from the brain (near the back), giving it the longest pathway. Sensory nerve for hearing and balance. It is the only cranial nerve that emerges from the brainstem dorsally and the only cranial nerve that innervates contralateral structures. some sensory (proprioceptive) fibers from V1. The trochlear nerve is found at which letter in the figure below? abducens nerve is cranial nerve. This muscle is responsible for inward turning of the eyeball. The superior oblique muscle controls the downward movement of the eyeball and, in part, keeps the eyeball from rolling upward into the orbit (eye socket). The trochlear nerve is also known as the fourth cranial nerve. The trochlear nerve is the fourth paired cranial nerve. Its main function is transmitting sensory information to the skin, sinuses, and mucous membranes in the face… Trigeminal nerver (V) Action: Sensations from ophthalmic, maxillary, and mandibular areas ... Function: sensory & motor. the abducens nerve leaves which part of the brain stem . Which is also responsible for the movement of the eyes as it is one of the six extra ocular muscles that together help in the movement and alignment of the eyes. D. Match the following cranial nerve with its function: Trochlear.


Of the 12 cranial nerves that exit out of the central nervous system, the trochlear nerve (CN IV) is responsible for only one function. the trochlear nerve innervates which muscle derived from myotomes? It is the smallest cranial nerve , It follows the longest course within the skull of any of the cranial nerves. The one muscle it sends signals to—the superior oblique muscle—is one of six muscles that allow the eye to make precise movements for tracking or focusing on an object. First, it is the only cranial nerve to exit the dorsal side of the brainstem. The trochlear nerve doesn't transmit sensory signals. Summary Of The 12 Cranial Nerves Olfactory Nerve: Responsible for the sense of smell Optic Nerve: Plays a role in vision Oculomotor Nerve: Controls movement of the eyeballs and eyelids Trochlear Nerve: Also involved in the movement of the eye … This is called … As always, you can follow along using Complete Anatomy, and if you don’t have it already, you can try it for FREE for 3 days. The trigeminal nerve is the largest of the 12 cranial nerves.