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muscular system term
key term
Question | Answer |
---|---|
muscular system | muscle are bundles of muscle fibers help togeder by conective tissue |
excitability | irratability,the ability to respond to a stimulus such as a nerve impulse |
contractibility | muscle fibers that are stimulated by nerves contract,or become short and thick,which cause movement |
extensibility | the ability to be stretched |
elasticity | allows the muscle to return to its original shape after it has contracted or stretched |
cardic muscle | forms the walls of the heart and contracts to circulate blood |
visceral | pertaining to organs |
involuntary | funcition without consecious thought or control |
skeletal muscle | attached to bone and cause body movement |
voluntary | a person has control over its action |
tendons | strong tough connective tissue cords |
fascia | a though ,sheetlike membrane that convers and protectes the tissue |
oring | the end that does not move |
insertion | the end that moves when the muscle contracts |
addution | moving a body part toward the midline |
abdution | moving a body part away from the midline |
flexion | descrasing the angle between two bones or bending a body part |
extension | increasing the angle between two bones or straightening a body |
rotation | turning a body part around its ownaxis |
circumduction | moving in a circle at a joint,or moving one end of the body part in a circle |
muscle tone | patially contracted at all time, even when hot in use |
contracture | a severe tightening of a flexor muscle resulting in bending of a joint |