Chapter 7 Flashcards
control the digestive system and other organs
smooth muscles
control bodily movement in relation to environment
skeletal or striated muscles
controls the heart
cardiac muscles
synapse between motor neuron axon and muscle fiber
Neuromuscular junction
two opposing muscles commonly found on the arms and legs
antagonistic muscles
muscle that flexes the limb
flexor
muscle that straightens the limb
extensor
slow-twitch fibers that use oxygen during movements
aerobic
fast-twitch fibers that do not need oxygen at the time but need oxygen to recover
anaerobic
receptors detecting movement of a body part
proprioceptors
receptor parallel to muscle responding to stretch
muscle spindle
responds to increases in muscle tension or contraction
golgi tendon organs
voluntary movements
units of movement
responsible for involuntary movement
autonomic nervous system
consistent automatic responses to stimuli (ex. stretch reflex, pupil’s response to bright light)
reflexes
not all movements are entirely voluntary and involuntary
knee-jerk reflex