Spinal Pathways Overview

These flashcards cover key concepts and definitions related to spinal pathways, including motor and sensory pathways, their functions, and anatomical details.

Corticospinal Pathway

A motor pathway that carries information from the cortex to the spine, controlling voluntary motor functions.

Contralateral

Referring to pathways or functions that occur on the opposite side of the body from where the origin of the information is.

Ipsilateral

Referring to pathways or functions that occur on the same side of the body as the origin of the information.

Medulla

The part of the brain where the corticospinal pathway crosses, leading to contralateral control of motor functions.

Spinothalamic Pathway

A sensory pathway that carries information about crude touch, pain, and temperature from the spine to the thalamus.

Dorsal White (Posterior Column)

A sensory pathway that carries information about fine touch and proprioception from the spine to the thalamus, crossing at the medulla.

Sensory Pathways

Nerve pathways that transmit sensory information to the brain, including pathways for touch, pain, and temperature.

Motor Pathway

Nerve pathways that carry motor commands from the brain to the muscles to initiate movement.

Spinal Nerve

A mixed nerve that carries both motor and sensory information, with sensory in the dorsal root and motor in the ventral root.

Crossing Over

The process where nerve fibers cross from one side of the nervous system to the other, significant in spinal pathways for determining body control.