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
movements that are guided with feedbacks
Ballistic movement
produces rhythmic motor patterns and generates repetitive patterns of motor behavior
central pattern generators (CPG)
fixed sequence of movements
motor programs
located in the frontal lobe and is important for complex actions such as talking and or writing. It much less control over coughing, sneezing and etc.
cerebral cortex
monitors the position of the body relative to the world.
role of selecting appropriate actions
posterior parietal cortex
planning and organizing a rapid sequence of movements.
supplementary motor cortex
most active immediately after a movement
receives information about the target direction of the body movement and the body’s current position and posture.
premotor Cortex
stores sensory information relevant to movement.
important for considering the probable outcomes of possible movements
prefrontal cortex