BackStudy Guide: Muscular System 1/4
Terms in this set (30)
The body system composed of muscles that produce movement, maintain posture, and generate heat.
Striated, voluntary muscle attached to bones responsible for body movement.
Involuntary, striated muscle found only in the heart, responsible for pumping blood.
Involuntary, non-striated muscle found in walls of internal organs and blood vessels.
Muscle tissue with a banded appearance due to organized sarcomeres, seen in skeletal and cardiac muscle.
Muscle action controlled consciously by the nervous system, e.g., skeletal muscle.
Muscle action not under conscious control, e.g., cardiac and smooth muscle.
Ability of cardiac muscle to generate its own rhythmic contractions without external stimuli.
Specialized connections between cardiac muscle cells that allow rapid electrical conduction.
The ability of muscle tissue to shorten forcibly when stimulated.
The ability of muscle to stretch without damage.
The ability of muscle to respond to a stimulus by generating an electrical impulse.
The ability of muscle to transmit electrical impulses along the membrane.
The ability of muscle to return to its original length after contraction or extension.
Muscle shape that is spindle-shaped with a thick belly and tapered ends.
Muscle fibers run parallel to the long axis of the muscle, allowing for greater range of motion.
Muscle fibers converge from a broad origin to a single tendon insertion.
Muscle fibers arranged in concentric rings, often surrounding openings (sphincters).
Muscle fibers insert into one side of a tendon.
Muscle fibers insert into both sides of a central tendon.
Muscle fibers insert into multiple tendons from many directions.
The fixed attachment point of a muscle, usually proximal or less movable.
The movable attachment point of a muscle, usually distal.
The specific movement produced by a muscle when it contracts.
The nerve supply to a muscle that controls its contraction.
The muscle primarily responsible for producing a specific movement.
Another term for agonist; the main muscle causing a movement.
The muscle that opposes the action of the agonist, relaxing during movement.
Muscle that assists the agonist in performing a movement.
Muscle that stabilizes the origin of the agonist to allow efficient movement.