Chapter 10 Flashcards
A cluster of sensory neuron cell bodies
Posterior root ganglion
Bones of the spine that enclose and protect the spinal cord
Vertebrae
In a reflex arc, the muscle or gland that responds with an action
Effector
A group of lumbar, sacral, and coccygeal nerves that branch off the lower end of the spinal cord
Cauda equina
The innermost layer of the meninges that is attached to the brain and spinal cord
Pia mater
Structure that responds to some environmental change my initiates a sensory impulse
Receptor
Opening that runs lengthwise through the spinal cord;CSF circulates through it
Central canal
Lymphatic fluid-filled space between the arachnoid and dura mater
Sub dura space
Reflex arc structure that transmits the impulse to a muscle or gland
Motor neuron
Matter within the spinal cord shaped like the letter H
Gray matter
Fat filled space between the vertebrae and dura mater
Epidural space
Reflex arc structure that passes the impulse from the receptor to the CNS
Sensory Neuron
Part of a spinal nerve contains sensory nerve fibers that carry impulses toward the spinal cord
Posterior root
Part of a spinal nerve containing motor neurons carrying impulses away from the spinal cord
Anterior root
Tough outermost layer of the meninges
Dura mater