Unlike most other cranial nerves, the trochlear nerve is exclusively a motor nerve (somatic efferent nerve). The trochlear nerve is unique among the cranial nerves in several respects: It …

What is the trochlear nerve? Your trochlear nerve, also known as the cranial nerve 4 or CN IV, is a motor (movement) nerve that sends signals from your brain to one of the muscles that …

Sep 25, 2024 · Find out what you need to know about the trochlear nerve. Discover its functions, location, and related health conditions.

Nov 6, 2025 · The trochlear nerve is the fourth paired cranial nerve. It is the smallest cranial nerve (by number of axons) and the cranial nerve with the longest intracranial course. It has a purely …

The trochlear nerve transmits general somatic efferent impulses, which synapse in the skeletal fibers of the superior oblique muscle. The superior oblique muscles allow for depression, …

Oct 30, 2023 · This article will delve deeper into the anatomy and function of the trochlear nerve, while reviewing the origin and course of the nerve, its field of innervation and clinical significance.

Sep 16, 2025 · The trochlear nerve is the fourth (CN IV) and thinnest cranial nerve. It exits the midbrain posteriorly, eventually passes into the cavernous sinus and into the orbit where it …

Discover the origin, course and supply of the Trochlear Nerve. Learn how it innervates the superior oblique muscle.

The Trochlear nerve is important for maintaining proper eye movement and vision. It allows us to look in different directions and helps to stabilize our vision as we move our head and eyes.

Mar 22, 2025 · The trochlear nerve is the fourth cranial nerve (CN IV), that contains somatic efferent (motor) nerve fibers responsible for controlling eye movements. It is the smallest of all …