Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
27 Cards in this Set
- Front
- Back
|
conus medullaris
|
cone shaped terminal of the spinal cord
|
|
|
cauda equine
|
"horse tail" of spinal cord composed of nerve fibers or axons
|
|
|
filum terminale
|
extends from top of conus medullaris to the sacrum. Composed of pia mater
|
|
|
cervical enlargements
|
thickened regions of the spinal cord
|
|
|
Meninges
|
Connective Tissue/ Coverings
|
|
|
Dura mater
|
Outermost layer; tough as parchment
|
|
|
Arachnoid
|
Very thin middle layer; like cellophane
|
|
|
Pia mater
|
Connective tissue that touches brain and spinal cord
|
|
|
Subarachnoid space
|
Deep to arachnoid, between arachnoid and pia mater. CSF is found here.
|
|
|
Epidural Space
|
Contains fat ; on the outside of dura mater
|
|
|
subdural space
|
internal of dura mater; nothing found here
|
|
|
Segments spinal Cord is divided into
|
31
8 cervical 12 thoracic 5 lumbar 5 sacral 1 coccygeal |
|
|
White matter
|
composed of fibers/axons
|
|
|
gray matter
|
composed of cell body of neurons
|
|
|
dorsal root
|
sensory nerve fibers
|
|
|
ventral root
|
motor fibers
|
|
|
Reflex
|
Automatic, unconscious response
|
|
|
Reflex receptor
|
responds to stimulus, initiates impulse
|
|
|
reflex - sensory neuron
|
transmits impulse to CNS
|
|
|
interneuron associative
|
link that transmits impulse ; not found in stretch reflex
|
|
|
Reflex motor neuron
|
transmits impulse from CNS to effector
|
|
|
Reflex effector
|
muscle on gland: receives/responds
|
|
|
Synapses Necessary for Reflex/Stretch reflex arc
|
2 Necessary for Reflex Arc
1 Necessary for Stretch Reflex Arc |
|
|
Stretch receptor
|
Muscle cell spindle
|
|
|
Stretch sensory neuron
|
Dendrites /Cell bodies in PNS/ Axons in CNS
|
|
|
Stretch motor neuron
|
Dendrites/Cell bodies in CNS/axons in PNS
|
|
|
Stretch muscle effector
|
Motor neurons in periphery of body
|
