nervous system Flashcards
it collects data
sensory input
it collects data
sensory input
process the sensory information
integration
process the sensory information
integration
Brain to spinal cord
SENSORY INPUT
maintains stable environment
homostasis
maintains stable environment
homostasis
Commands the mucles
Motor output
Commands the mucles
Motor output
enables thought and emotions
mental activity
enables thought and emotions
mental activity
brain and spinal (receives info)
CNS
Send the information
PNS PERIPHERAL
gathers data ( conduct impulse)
sensory afferent
transmit signal
motor efferent
fight or flight
autonomiv nervous system
netwrok to digestive tract
enteric nervous system
conduct impulse for communication
neurons
control center of neurons
soma
antena of neurons
dendrites
transmitter of neurons
axon
junction where signals are passed
synapse
neuron types: has many dendrites
multipolar
neuron types: has one dendrites and one axon
Bipolar
neuron types: has one dendrites and one axon
Bipolar
neuron types: single projection that divides into 2 branches
pseudo unipolar
forms blood brain(star like)
astrocytes
forms blood brain(star like)
astrocytes
produces myelin, electrical like
obligodendrocytes
acts as immmune cell( defender)
microglia
forms myelin( boost)
schwann cell
regulates ganglia environment( support neuron)
satellite cell
enhance transmission speed of impulse
myelin sheats
gaps is myeline
nodes of ranvier
resting membrane potentian
70mV
potential becomes positive
depolarization
restoring negative charge
repolization
transmit info and controld reflect action
spinal cord
cross section of spinal: centrally located
gray matter
cross section of spinal: myelinated axons
white matter
cross section of spinal: for sensory
dorsal
cross section of spinal: roots emerged spinal nerves
ventral motor
contains both sensory and motor fibers
spinal nerves
facilitates control over lower limbs
caudia equina
4 main region of brain
brain stem, cerebellum, diencephalon, cerebrum
the base of the brain that connects to spinal cord
brain stem
responsible for reflex action
medulla oblongta
contains nerve tracts running longitudinal and transversely(bridge)
pons
smallest region of the brain stem
mid brain
balance and coordinate the brain stem
cerebellum structure
increases surface area
folia
enclosed by the cerebrum
diencephalon
form lateral walls (egg shape)
thalamus
form lateral walls (egg shape)
thalamus
housing the pineal gland
epithalamus
floor of third ventricle
hypothalmus
largest brain region
cerebrum
rich in neuron cell bodies
cerebra cortex
surface: elevated ridges
gyri
surface:shallow groves
sulci
surface:shallow groves
sulci
deeper groves
fissure
deeper groves
fissure
a recording device that records brain activity
EEG
broca’s
responsible for producing speech
broca’s
responsible for producing speech
wernickek’s
understanding speech
delta
sleep
theta
frustration
alpha
calm and relax
beta
intense activity
gamma
recall and understanding