ANATOMY 1 Lecture Notes - Lecture 25: Trigeminal Nerve, Nerve Root, Sensory Neuron
Document Summary
Area of the skin that provides sensory input to the cns via one pair of spinal nerves or the trigeminal nerve. Variable amount of overlap between neighboring dermatomes. *each spinal nerve contains sensory neurons that serve a specific, predictable segment of the body. *trigeminal nerve serves most of the skin of the face + scalp. Regions of skin supplied by a specific nerve arising from a plexus. *nerves arising from a plexus can contain neurons from more than one spinal nerve level. => so damage within cutaneous field = peripheral nerve damage rather than spinal root or spinal cord damage. Sensory impulses from receptors flow towards brain. Motor impulses flow from brain to skeletal muscle + other effector tissue. Receives info and integrates incoming + outgoing info. Name of tract indicated its position in white matter of spinal cord + where it begins + ends.
