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;
30 Cards in this Set
- Front
- Back
|
What does the nervous system do?
|
It communicates and control the body
|
|
|
What are the funtions of the nervous system?
|
1. monitors various activities within the body and regulates
2. forms an intergrated communcation system within the body 3. gathers, stores, and recalls info.; dispenses a proper response |
|
|
C.N.S.
|
central nervous system
|
|
|
C.N.S. is made of?
|
spinal cord and brain
|
|
|
Spinal cord is?
|
about 17-18" long
communicates with the brain exits skull through the foramen magnum not as long as vertebral column and house in verterbal canal any damage to SC creates loss of sensory and motor function |
|
|
Meninges are?
|
3 membranes that cover and protect the SC
|
|
|
What are the three meninges?
|
Dura Mater
Arachnoid Pia Mater |
|
|
What is the Dura Mater?
|
though and outer membrane that lines the veterbral canal
|
|
|
What is the arachnoid?
|
thin tranparent web-like membrane contains an area called the sub-arachnoid space filled with CSF
|
|
|
What is the Pia Mater?
|
thin delicate inner membrane that adheres to the brain and SC contrain blood vessel
|
|
|
Horns?
|
anterior and posterior
four progections of greay matter in the spinal cord |
|
|
White matter?
|
surrounds the horns of grey matter and gives spinal cord oval shape,for ascending and descending tracts
|
|
|
Grey Matter?
|
no mylenated sheath on neurons
|
|
|
What is the brain?
|
highly organized system made upof over 100 billion nerve cells, 3lbs and cranial cavity, covered by meninges (cranial), complex connection of itnerconnected neurons, center of membor, muscle control
|
|
|
what are ventricles?
|
cavities in the cerebrum filled with CSF
|
|
|
Limbic system
|
border between the cerebrum
the interbrain connected to lower parts link between concious through intelligence ass. with emotions and behavioural drives |
|
|
3 types of mylenated fibers?
|
associative fiber-make conn. between neurons in same hemisphere
projection fibers-aslo conn in same hemispherer commissural- |
|
|
Cerebrum?
|
larges part of the brain that occupies most of the cranial cavity withover 15 billion neurons;
divided into L and R hemisphere divided into 6 lobes |
|
|
The cerebrum has____ hemispheres?
|
2
|
|
|
The cerebrum has how many lobes and name them?
|
6
frontal L and R paritel lobes temporal lobes occipital |
|
|
Convolutions (sulci)
|
shallow groves
ride between grooves |
|
|
cerbral cortex
|
outer layer of grey matter on the brain
|
|
|
olfactory bulb
|
swollen protrusion in the inferior part of the brains cerebral cortex-related to smell
|
|
|
subarahnoid space
|
filled with CSF used for cushion
|
|
|
gray matter
|
non-mylenated neurons, carries impulses, travel horizontally
|
|
|
white matter
|
mylenated neurons, carries impules, travel vertically
|
|
|
central canal
|
hollow tube runs down whole length of spinal cord; filled with CSF
|
|
|
Spinal nerve
|
31 pairs of SN
|
|
|
ganglion
|
Bundles of nerve cell bodies
|
|
|
Median fissure
|
groove that runs down fron at spinal cord
|
