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44 Cards in this Set

  • Front
  • Back
Muscles that oppose the action of the prime movers. Must be relaxed so movement can occur
Flat, thin, fibrous sheet of connective tissue that attaches muscle to bone or other tissues at their origin or insertion
Wasting away (degeneration)
Sac or cavity lines w/ synovial membrane, filled w/synovial fluid. Reduces friction btwn tendon & bone, tendon & ligament, etc
Epimysium (fascia)
Outermost sheath of connective tissue which surrounds a skeletal muscle
Lacking tone in muscle; flabby
Increase in size of an organ or structure
Within a muscle
Independent of the will
Band of strong fibrous connective tissue connecting the articular ends of bones serving to bind them together and facilitate or limit motion
Muscle fatigue
Loss of power to contract after prolonged periods of muscle contraction
Muscle spasm
An involuntary, abnormal muscular contraction
Muscular system
System of the human body involving muscles and their attachments that work with the skeletal system to produce movement (composes 35-50 % of total weight of the body)
Study of muscles
Prime Movers
Muscles that are responsible for prime action
Muscles that assist the prime movers by stabilizing the joint
Tough cord or band of dense white connective tissue that attaches a muscle to another part and that transmits the force which the muscle exerts. ATtaches muscle to bone (the periostreum.
Orbicularis oculi
Closes eyelids
Orbicularis oris
Draws lips together as in kissing
"Trumpeter's muscle' used in blowing, whistling, and smiling
Closes jaw as in chewing
Moves shoulders by raising and throwing them back; assists in moving head to one side or the other; hyperextends head when occiput acts as insertion; helps hold head erect
Rotates head from side-to side; flexes upper vertebral column and head as in bowing the head; "praying muscle", helps hold head erect
Moves the upper arm at the shoulder joint
Biceps brachii
Flexes the upper arm when the hand is supinated
Triceps brachii
EXtends the upper arm
Flexes the upper arm when the hand is pronated
Muscles of the forearms
Flex and extend the forearms, wrists, and fingers
Pectoralis major
Flexes and adducts upper arm anteriorly across the chest
Serratus anterior
Moves the scapula forward as in pushing something
Assists in respirations by enlarging the thoracic cavity on inspiration
Latissimus dorsi
Brings down arms forcibly as in swimming
Abdominal muscles
Assist indirectly in respiration as they relax when the diaphragm contracts, and vice versa;
Main muscle used in breathing which contracts during inspiration and relaxes during expiration
Levator ani and coccygeus
Support pelvic organs and act on rectum to aid with defecation
Gluteus maximus
Functions in maintaining an erect position, extends and rotates thigh, and is very important in walking and running
Gluteus minimus
Abducts thigh, rotates thigh outward, stabilizes pelvis in femur, and extends thigh
Adducts and flexes leg; called "tailor's muscle" because it is used in crossing legs
Quadriceps femoris
Extends knee as in kicking football; includes four parts
Include three in group; press thighs together, as in horseback riding
Include three in group; flex lower leg making angle at the knee joint smaller
Extends the foot; used to stand on tiptoes' is called the "dancer's muscle"
Tibialis anterior
Flexes foot and inverts ankle used to walk on heels
Peroneus longus
Everts the ankle