Physiology
Muscle contractions produce
Heat
Flesh
Sarco
Twist muscle; lower back
Spiral
Another word for prime movers
Agonists
Basic unit of muscle contraction
Sarcomeres
Refers to the body positions maintained by muscle contractions; standing or sitting
Synergist
Surround the eyes, circle muscle
Circular
Are specialized synergists that stabilize joints or help maintain posture; is the deltoid stabilizing the shoulder so elbow can flex
Fixators
Strong central structural unit or band
Fascia
Cellular fluid within muscle fibers; equivalent to cytoplasm
Sarcoplasm
Lacking, without, not; yo grow
Atrophy
Featherlike appearance; fibers emerging diagonally between one ore more tendons; forearms
Pennate
Are muscle causing the desired action; elbow flexion=brachialis
Prime Movers
A halter
Retinaculum
Covering muscle fiber; equivalent to cell membrane
Sarcolemma
Toward the middle
Concentric
Spindle shaped; along the long axis of bone; hip to knee
Parallel
Smaller in size compared to prime movers; pronator is a synergist to biceps brachialis
Synergists
Muscles whose lengths remains the same as they generate force; movement does not occur
Isometric Contractions
Skeletal muscles contract to pull on bones; producing movement
Movement
Away from the middle
Eccentric
Triangular shape; compared to a fan; shoulder
Convergent
Usually lie on the opposite side of the moving joint and create opposing action
Antagonists
Muscles generating force; can either become shorter or longer depending on desired action
Isotonic