Muscle located in the shoulder responsible for arm abduction.

Muscle in the upper back responsible for shoulder movement and neck extension.

Large muscle in the chest responsible for arm flexion and adduction.

Muscle in the upper arm responsible for forearm flexion.

Muscle in the abdomen responsible for trunk flexion.

Muscles on the sides of the abdomen responsible for trunk rotation and lateral flexion.

Group of muscles in the front of the thigh responsible for knee extension.

Muscle in the upper arm responsible for forearm extension.

Large muscle in the back responsible for arm extension and adduction.

Muscle in the buttocks responsible for hip abduction and stabilization.

Largest muscle in the buttocks responsible for hip extension.

Group of muscles in the back of the thigh responsible for knee flexion.

Muscle in the calf responsible for plantar flexion of the foot.

Produces movement, maintains posture, stabilizes joints, generates heat

Excitability, contractability, extensibility, elasticity

Found in the heart, striated, branched, uninucleated, involuntarily controlled

Connected to bones, cylindrical, striated, multinucleated, voluntarily controlled

Found in walls of internal organs, nonstriated, uninucleated, involuntarily controlled

Thread-like organelles of the muscle fiber, structured in sarcomeres

Long, striated unit of myofibril, contains actin and myosin filaments

Covers the whole muscle, allows muscle fibers to slide

Covers a fascicle

Covers an individual muscle fiber

Actin and myosin filaments attached at Z-line, sarcomere between two Z-lines

Nerve impulses stimulate myosin heads to pull actin filaments, shortening sarcomere

Intense exercise depletes glucose supply, inefficient ATP use, anaerobic respiration, oxygen debt

Muscle names based on size, shape, location, orientation, function

Muscle doing the action (contracting)

Muscles that help in the same direction

Opposing muscle relaxing during motion

muscle end attached to the bone that does not move when the muscle contracts

The middle part of the muscle

Connects muscle to bone

connection of the muscle to a bone that moves

flexes forearm

extends forearm

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