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;
26 Cards in this Set
- Front
- Back
- 3rd side (hint)
|
Glial Cells
|
provide guid of growth, rapp around neurons, and realease chemicals
|
3 things
|
|
|
Neurons
|
cell; 1 extension recieves electrical signals, and the longer 1 transmitts electrical signals
|
2 extensions.
|
|
|
Cell Body
|
large egg shaped and has a nucleus.
|
|
|
|
Dendrites
|
recieve signals from other neurons, muscles, or sense organs and pass these signals to nucleus
|
|
|
|
Periperal nervous system
|
;pcated throughout budy except brain and spinal cord.. have ability to regrow or reattach if severed or damaged
|
|
|
|
central nervous system
|
made up of neurons located in the brain and spinal cord. limited capacity to grow new neurons.
|
|
|
|
axon membrane
|
has chemical gates that can open to allow electrically charged particals enter.
|
|
|
|
resting state
|
possitive sodium ions are outside and negative protein ions are inside.
|
|
|
|
sodium pump
|
picks up any sodium ions that enter axon ans returns them back outside. responsible for keeping axon charged.
|
a battery
|
|
|
action potential
|
possitive sodium ions rush inside axon, and ourside becomes negative.
|
|
|
|
Nerve immpulse
|
series of action potentials that take place segments by segment as they move down the legth of an axon.
|
|
|
|
all-or-none-law
|
if an action potential starts at the begining of an axon, the action potential will continue at the same speed, to the very end of the axon
|
|
|
|
transmitter
|
chemical messenger that transmits info between nerves ans body organs, such as muscles and heart.
|
|
|
|
exitatory transmitters
|
open chemical locks in the heart muscle and cause it to beat faster
|
|
|
|
inhibitory transmitter
|
block chemical locks in the heart muscle ans decrease rate.
|
|
|
|
neurotransmitters
|
chemicals amde by neurons and used for communication between neurons durring the performance of mental or physical activities.
|
|
|
|
Acetylcholine
|
motor control over muscles. learning, memory, sleeping, and dreaming
|
|
|
|
Norepinephrine
|
arousal and vigalance "high alert". increases heart rate and blood pressure. eating behavior.
|
|
|
|
Dopamine
|
inhibitory. reward and motivation. motor control over voluntary movement
|
|
|
|
Serotonin
|
inhibitory. emotional states and impulsiceness. dreaming
|
|
|
|
GABA
|
inhibitory. inhibition of action potentials. anxiety and intoxication
|
|
|
|
Endorphins
|
inhibitory.pain reduction. reward.
|
|
|
|
reflex
|
unleaned, involuntary reation to some stimulus, neural connections
|
|
|
|
interneuron
|
or motor, neurons carry info away from spinal cord to produce responses in various muscles and organs thoughout the body.
|
|
|
|
afferent
|
sensory. neurons carry info from the senses to the spinal cord.
|
|
|
|
efferent neuron
|
motor. away from the spinal cord to produce responses in various muscles and organs throughout the body. "movement information"
|
|
