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;
29 Cards in this Set
- Front
- Back
|
Refractory period |
A resting pause that occurs after a neuron has fires; subsequent action potentials can not occur until the axon returns to its resting state |
|
|
All or none response |
A neuron’s reaction of either firing (with a full-strength response) or not firing |
|
|
Synapse |
Junction between Axon tip of sending the neuron and dendrite or cell body of the receiving neuron |
|
|
Chemical transmission |
Chemical messengers |
|
|
Neurotransmitters |
Released from neuron into the synapse, and goes to the receptors on the dendrites is the receiving neuron |
|
|
Receptors |
Are binding sites for chemicals |
|
|
Reuptake |
Reabsorbed by sending nueron |
|
|
Everything psychological |
Every idea, every mood, every urge is biological |
|
|
Biological psychologists |
Study the links between biology and behavior |
|
|
Cells in the body |
Neurons and glial cells |
|
|
Neurons (nerve cells) |
Building blocks of the nervous system; consists of ( the soma, dendrites, axon, myelin sheath, and terminal buttons) |
|
|
Soma (cell body) |
Is the cells life support center |
|
|
Dendrites |
Fibers that receive messages from other cells |
|
|
Axon |
Passes messages away from the cell body to other neurons or to muscles or glands |
|
|
Myelin sheath |
Covers the axons of some neurons and helps speed neural impulses |
|
|
Terminal buttons |
Of axons form junctions with other cells |
|
|
Action potential |
a brief electrical charge that travels down an axon |
|
|
Threshold |
The level of stimulation required to trigger a neural impulse |
|
|
Acetylcholine (ACh) |
Enables muscle action, learning and memory |
|
|
Info travels through three types of neurons |
Sensory (afferent), motor(efferent), and interneurons. |
|
|
Gaba |
Major inhibitory neurotransmitter |
|
|
Glutamate |
Major excitatory neurotransmitter |
|
|
Endorphins |
Natural, opiate- like neurotransmitters linked to pleasure and released in response to pain and exercise |
|
|
Agonist |
Molecule that increases a neurotransmitter’s action |
|
|
Antagonist |
Molecule that inhibits or blocks a neurotransmitter’s action |
|
|
Nervous system |
Body’s speedy communication network, consisting of the nerves cells of: central nervous system, peripheral nervous system, and nerves |
|
|
Central nervous system |
Brain and spinal cord |
|
|
Peripheral nervous system |
Sensory and motor neurons connecting the central nervous system to the rest of the body( gathers and transmits info) |
|
|
Nerves |
Bundled axons forming neural cables connecting CNS with muscles, glands, and sense organs |
