Myology Flashcards
Found only in the heart. It’s action is involuntary. Is striated.
Cardiac muscle
Moves the bones of the skeleton. Is voluntary meaning we can usually control it. Is strained due to alternating dark and light bands of protein.
Skeletal muscle
Located in the walls of hollow internal structure like blood vessels, air ways, intestines, etc. lacks striations and so has a smooth appearance. Involuntary.
Smooth muscle
From walking and running to typing on a keyboard, skeletal muscle produces the contractions necessary to move our bodies everyday.
Movement
Postural muscles continuously contract to maintain posture.
Stabilizing body positions
Substances within the body sustained contraction of muscles to hold urine in the bladder, food in the stomach are smooth muscle example.
Storing and moving
As muscular tissue contracts, it produces heat, a process known as thermogenesis.
Generating heat
The ability to respond to certain stimuli by producing action potentials impulses.
Excitability
The ability of muscular tissue to contract forcefully when stimulated by an action potential.
Contractility
The ability of muscular tissue to stretch, within limits, without being damaged.
Extensibility
The ability of muscular tissue to return to its original length and shape after contraction or extension.
Elasticity
Direction of muscle fibers Shape Action Number of origins Location Origin and insertions
Naming criteria for skeletal muscles
Within opposing pairs, one muscle
The prime mover agonist
Stretches and yields to the effects of the prime mover.
Antagonist
Prevents unwanted movements at intermediate joints or to otherwise aid the movement of the prime mover muscles
Synergistic
