neuromuscular basis of human motion Flashcards
1
Q
sensory divison
A
afferent fibers transmit impulses from receptors to CNS
2
Q
motor division
A
efferent fibers transmit impulses from CNS to effector organs
3
Q
sympathetic division
A
releases norepinephrine and excites an effector organ
4
Q
parasympathetic division
A
releases acetylcholine and inhibits effector organ
5
Q
irritability
A
ability to respond to a stimulus and convert it to a neural impulse conductivity
6
Q
conductivity
A
transmission of the impulse along an axon
7
Q
repolarization
A
return to resting membrane potential
-K+ leaves cell rapidly
-NA+ channels close
8
Q
all or none law
A
once a nerve impulse is initiated, it will travel the length of a neuron
