Chapter 9/10 Flashcards
Cluster of sensory neuron cell bodies
Posterior root ganglion
Simple, fast, predictable automatic response to help protect the body
Reflex arc
Bones of the spine that enclose and protect the spinal cord
Vertebrae
In a reflex arc, muscle or gland that responds with an action
Effector
Group of lumbar, sacral, and coccygeal nerves that branch off the lower end of the spinal cord
Cauda equina
Innermost layer of the meninges that is attached to the brain and spinal cord
Pia mater
Structure that responds to some environmental change and initiates and 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
Subdural space
Reflex arc structure that transmits the impulse to a muscle or gland
Motor neuron
Matter within the spinal cord shaped like an 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 the spinal nerve containing sensory nerve fibers that carry impulses toward the spinal cord
Posterior root
Part of the spinal nerve containing motor neurons carrying impulses away from the spinal cord
Anterior root
Tough outermost layer of the meninges
Dura mater
Space between the arachnoid and pia mater
Contains CSF
Subarachnoid space
Filament that anchors the inferior portion of the spinal cord
Filumtermial
Region in the CNS that connect the sensory and motor portions of the reflex arc
Integrating center
Cone shaped tip of the spinal cord
Corneus medullaris
3 consecutive tissue membranes covering the brain and spinal cord
Meninges
Tracts of white matter that run up and down the spinal cord
Columns
Cobweb like middle layer of the meninges
Arachnoid
Area in the precentral gyrus of the frontal lobe, controls specific muscles or groups of muscles
Primary motor area
Area in occipital lobe, permits vision
Primary visual
Area in temporal lobe, permits hearing
Primary auditory