The trochlear nerve, also called the fourth cranial nerve or cranial nerve IV, is a motor nerve (a somatic efferent nerve) that innervates only a single muscle: the superior oblique muscle of the eye, which operates through the pulley-like trochlea.
Similarly, what is the main function of the accessory nerve?
The accessory nerve is a cranial nerve that controls the movement of certain neck muscles. It is coiled in appearance. It is divided into spinal and cranial divisions, but its cranial part is often disregarded.
What is the function of the cranial nerves?
Cranial Nerves and their functions
- I Olfactory (Smell)
- II Optic (Sight)
- III Oculomotor (Moves eyelid and eyeball and adjusts the pupil and lens of the eye)
- IV Trochlear (Moves eyeballs)
- V Trigeminal (Facial muscles incl.
- VI Abducens (Moves eyeballs)
- VII Facial (Taste, tears, saliva, facial expressions)
- VIII Vestibulocochlear (Auditory)
What is the main function of the oculomotor nerve?
Oculomotor nerve. The oculomotor nerve is the third of 12 pairs of cranial nerves in the brain. This nerve is responsible for eyeball and eyelid movement. It follows the olfactory and optic nerves in terms of order.