Skip to main content
Search
Biomedical Basics

Cranial nerves overview

  • Created by Henry Stewart Talks
Published on March 31, 2026   4 min

A selection of talks on Neuroscience

Please wait while the transcript is being prepared...
0:00
Welcome to this lecture on cranial nerves providing an overview of the 12 cranial nerves, their names and numbering, and the sensory, motor, and mixed functions they perform. We will examine their anatomical origins, pathways, and roles in the head and neck, as well as how their assessment guides diagnosis in clinical practice. Additionally, we will discuss common signs, symptoms, and disorders related to cranial nerve dysfunction, highlighting their clinical significance in neurological exams. In this lecture, we will review the 12 cranial nerves, a vital component of the peripheral nervous system. The cranial nerves are named and numbered one through 12, arising directly from the brain rather than the spinal cord. Each nerve fulfills specific roles, sensory, motor, or both, serving the senses, muscle movement, and autonomic functions, especially throughout the head and neck. Knowledge of these nerves and their functions informs our understanding of neurological health and is key in localizing and diagnosing various clinical disorders through examination. Let's review the cranial nerves in order. The olfactory nerve one provides smell and the optic nerve two handles vision. Cranial nerves three, four, and six, ocular motor, trochlea and abducens, coordinate eye movement and some pupil function. The trigeminal five manages facial sensation and chewing. Facial nerve seven controls facial expression and anterior tongue taste, while eight manages hearing and balance.

Quiz available with full talk access. Request Free Trial or Login.

Show
Hide

Cranial nerves overview

Embed in course/own notes