the attachment of a muscle to a bone or structure that does not move when the muscle contracts; is the site of the anchored end?
origin
the attachment of a muscle to a bone or structure that does move when the muscle contracts?
Insertion
a muscle that has its origin and insertion located in the same body region?
Intrinsic muscle
a muscle that has its origin located in a body region different from that of its insertion?
Extrinsic muscle
a muscle that holds an origin stable for another muscle ?
Fixator
muscles that have the same action?
Synergists
the main muscle that performs the action, helped by synergists?
Prime mover
a muscle that has an opposing action?
antagonist
motions caused by the muscle contraction?
Muscle actions
action that bends a part of the body anteriorly?
Flexion
action that bends a part of the body posteriorly?
Extension
movement of a part of the body away from the midline?
Abduction
movement of a part of the body toward the midline?
Adduction
movement that brings part of the body forward?
Protraction
movement that brings part of the body backward?
Retraction
movement of the jaw laterally to either side?
Lateral excursion
movement of the jaw back to the midline?
Medial excursion
position of standing on the heels with the toes pointing up off the floor?
Dorsiflexion
position of standing on tiptoes with the heels off the floor?
Plantar flexion
position in which the soles of the feet are together, facing each other?
Inversion
position in which the soles of the feet point away from each other?
Eversion
the act of spinning on an axis. Pointing your toes to the side involves lateral rotation of the leg?
Rotation
the act of making a circle with part of the body?
Circumduction
rotation that turns the palms up?
Supination
rotation that turns the palms down?
Pronation
the act of bringing the thumb to the palm?
Opposition
the act of taking the thumb away from the palm?
Reposition
the act of closing the jaw or raising the shoulders?
Elevation
the act of opening the jaw or lowering the shoulders?
Depression
A procedure that assesses the health of the muscles by testing how a muscle responds to electric stimuli?
Electromyography (EMG)
occurs when any part of the viscera protrudes through the muscle of the abdominal wall?
Hernia
involves a loop of the intestine protruding through the inguinal canal?
Inguinal hernia
involves the stomach protruding through the diaphram, This type of hernia is most common in people affected by obesity over the age of 40?
Hiatal hernia
extreme painful muscle spasm?
Cramp
used for a group of genetic disorders that result in progressive weakening and degeneration of muscle tissue and its replacement with fibrous scar tissue?