muscular system Flashcards
smooth muscle
involuntary, (helps w digestion and nutrients)
skeletal muscle
organized tissue made up of bundles of fasciculi
cardiac muscle
makes up thick middle layer of the heart
automaticity
contract without direct stimulation by nervous system
contractility
muscle cells forcefully shorter
elasticity
go back to muscles original length after being stretched
excitability
respond to stimuli
extensibility
muscle to be stretched
origin
attachment site that doesn’t move when muscle contracts
insertion
attachment site that moves when muscle contracts
strain
stretching/tearing of muscle or tendon
sprain
stretching/tearing of a ligament (that connects bone to bone)
adhesion
collagen fibers stick to tissue
atrophy
shrinking of muscle size
contracture
permanent tightening
hypotonia
less muscle tone