Muscular Flashcards
(42 cards)
Skeletal Muscle
Voluntary or striated
Functions of the muscular system
- movement
- maintains posture through steadily contraction
- generates heat through cell metabolism
- moves substances inside body
Skeletal muscles are attached to ______ by ________.
Bones, Tendon
Skeletal muscles ________ body parts together.
PULL
Skeletal muscles usually works in ______?
Pairs
Skeletal muscles can _______ and _______ rapidly but tire quickly.
Contract, relax
Cardiac muscle is found only in the _______.
Heart
Cardiac muscle _____ in the heart to pump blood.
Contract
Cardiac muscle do not tire quickly.
True
Cardiac muscle can be controlled.
False
Cardiac muscle are striated
True
Smooth muscle is involuntary
True
Smooth muscle are found in the _____ _______.
Digestive system
_______ _______ moves substances in the body.
Smooth muscle
Skeletal muscle are composed of bundles of _______ _______.
Muscle fibers
These fibers are ______ and are muscle cells with many ______.
Long , nuclie
Muscle fibers is composed of many units called ______.
Myofibers
Myofibrils are composed of many units called _______.
Sarcomeres
The sarcomas ____ when the muscle contracts
Shortens
Orbicularis Oris
Moves lips
Orbicularis Oculi
Move eye lids
Frontalis
Raises eyebrows
Buccinator
Smiling, chewing, whistling, speak
Chewing
Masseter