Nervous System Flashcards
function of the NS
detect stimuli and enable the body to effectiveley respond.
what is the brain
enlarged upper part of the spinal chord.
how is the brain protected
cranium, cerebrospinal fluid, meinges membranes
name the 3 meninges
dura meter
arachnoid meter
pia meter
function of the cerebellum
voluntary
recieves and interprets sensations
high mental functions
function of the corpus callosum
connects 2 hemispheres of the cerebrum
function of the cerebellum
all voluntary actions to ensure smooth movement
maintains muscle tone
function of the medulla oblongata
involuntary functions
where can the central canal be found
it runs through the centre of the spinal cord.
what is the central canal filled with
cerebrospinal fluid
what shape does the grey matter form
H shape
where is the white matter of the spinal chord found
surrounds the H shape
where do the spinal nerves enter and leave
between successive vertebrae
compare the two types of spinal nerves.
dorsal:
- made up of sensory neurons
- conducts impulses from receptors to grey matter
ventral:
- made up of motor neurons
- conducts impulses from grey matter towards effector.
what is a ganglion
cell bodies of sensory neurons occur in swelling of dorsal root.