How can we help?

You can also find more resources in our Help Center.

37 terms

Anatomy/Physiology-Muscular System

Muscular System Review/Study Guide
STUDY
PLAY
Elasticity
property of muscle cells that allow them to return to original shape
Troponin
does NOT cause muscle contraction
Sarcolemma
cell membrane which surrounds muscle cells
A.T.P.
energy source for muscle contraction
Tone
property of muscle in which a state of partial contraction is maintained throughout the whole muscle
Myosin
dark bands in muscle fibers are made of thick filaments
Troponin
inhibitor substance that keeps actin and myosin filaments seperate
40-50
muscles make up ____ percent of body weight
Sarcomere
area of a muscle between the 2 adjacent Z lines
Achilles
tendon that attaches the calf muscle to the heel bone.
muscle contractions
neuroelectrical, chemical, & energy source interactions cause _______.
Rotators
type of muscles that rotate an involved limb.
Smooth
Muscle that is found in intestines, blood vessels, and urinary bladder.
Superficial
muscle found directly under the skin.
Smooth
_______ is involuntary, contains one nucleus, not striated, contractions push food in intestines or blood in arteries and veins, and slower contractions than skeletal muscle.
Depressors
muscles that lower body parts
heart
Where is cardiac muscle found?
Cardiac
Muscle that is involuntary, one nucleus, striated,and if one cell is stimulated, all are (contract together).
Pronation
turning the forearm so the palm faces the ground is known as
Fibrillation
is rapid, uncontrolled contraction of individual heart cells; can result in death.
action, shape, origin, location, number of divisions, direction of fibers
Six factors muscles are named after.
Antagonists
muscles that straighten the leg
not striated
One major difference b/n smooth muscle and skeletal muscle is that smooth muscle is ____ ____.
Insertion
movable attachment; where the efforts of contraction are seen.
tendon
Most skeletal muscles do not insert directly to a bone, but they insert through a _____.
Dorsiflexion
muscle action that turns the foot upward.
Aponeurosis
a wide, flat tendon.
Flexors
muscles that bend a limb at a joint.
Urinary bladder
place where smooth muscle would be found in the body
Extensors
straighten a limb at a joint.
Origin
fixed attachment of a muscle.
Abductor
move limbs AWAY from the midline of the body.
Plantar Flexion
muscle movement that brings the foot toward the ground.
Adductor
move limbs TOWARD the midline of the body.
Supination
turning the forearm so the palm faces upward.
Levatars
muscles that raise a body part.
Synergists
muscles that assist prime movers.