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;
25 Cards in this Set
- Front
- Back
|
acetylcholine
|
neurotransmitter- released at synapses within nervous system and at neuromuscular junction
|
|
|
action potential
|
sudden change in the electrical charge on cell membrane,then spreads along membrane; nerve impulse
|
|
|
afferent
|
carrying toward a given point, such as a sensory neuron that carries nerve impulses toward the central nervous system
|
|
|
autonomic nervous system
ANS |
The part of the nervous system that controls smooth muscle, cardiac muscle, and glands; the visceral or involuntary nervous system
|
|
|
axon
|
fiber of a neuron that conducts impulses AWAY from the cell body
|
|
|
dendrite
|
fiber of a neuron that carries impulses TOWARD the cell body
|
|
|
effector
|
muscle or gland that responds to a stimulus; effector organ
|
|
|
efferent
|
carrying AWAY from a given point, such as a motor neuron that carries nerve impulses AWAY from the central nervous system
|
|
|
epinephrine
|
neurotransmitter and hormone; released from neurons of the sympathetic nervous system and from the adrenal medulla; adrenaline
|
|
|
ganglion
|
collection of nerve cell bodies located outside the central nervous system
|
|
|
interneuron
|
a nerve cell that transmits impulses within the central nervous system
|
|
|
motor
|
describing structures or activities involved in transmitting impulses AWAY from the central nervous system; efferent
|
|
|
motor unit
|
group consisting of a single neuron and all the muscle fibers it stimulates
|
|
|
nerve
|
bundle of neuron fibers outside the central nervous system
|
|
|
nerve impulse
|
electrical charge that spreads along the membrane of a neuron; action potential
|
|
|
neuroglia
|
supporting and protective cells of the central nervous system; glial cells
|
|
|
neurotransmitter
|
chemical released from the ending of an axon that enables a nerve impulse to cross a synapse
|
|
|
parasympathetic nervous system
|
craniosacral division of the autonomic nervous system; generally reverses the fight or flight-stress- response
|
|
|
plexus
|
network of vessels or nerves
|
|
|
receptor
|
specialized cell or ending of a sensory neuron that can be excited by a stimulus
|
|
|
reflex
|
simple, rapid, automatic response involving few neurons
|
|
|
sensory
|
describing cells or activities involved in transmitting impulses TOWARD the central nervous system; afferent
|
|
|
somatic nervous system
|
the division of the nervous system that controls voluntary activities and stimulates skeletal muscle
|
|
|
synapse
|
junction between two neurons or between a neuron and an effector
|
|
|
tract
|
bundle of neuron fibers within the central nervous system
|
