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MuscularSystem Mrs.D
Definitions on Muscular System
Question | Answer |
---|---|
Abduction- | Moving a body part closer to the midline |
Adduction- | Moving a body part away from the midline |
Flexion- | Decreasing the angle between two bones or bending a body part |
Extension- | Increasing the angle between two bones or straightning a body part |
Rotation- | Turning a body part on its own axis (head turning) |
Circumduction- | Movin in a circle at a joint or moving one en of a body part as the other end stays stationary |
Muscle system- | Made up of over 600 muscles |
Excitability- | Irritability, the ability to respond to stimulus such as nerve impulse |
Contractibility- | Muscle fibers contract, which cause movement |
Extensibility- | The ability to be stretched |
Elasticity- | Allows the muscle to return back to its normal shape after it has been contracted or stretched |
Cardic muscle- | Forms the walls of the heart and contracts to make blood flow. Involuntary |
Visceral/smooth muscle- | Found in the inner organs such as the digestive system and reproductive system, and in blood vessels and in the eyes. They contract to cause movement in these organs. Involuntary |
Contracture- | Severe tightning of a flexor muscle resulting in the bending of a joint |
Insertion- | The en of a muscle attached to a bone that moves when it contracts |
Origin- | The end of a muscle attached to a bone that doesnt move |
Skeletal muscle- | Muscle attached to the bone that makes the body move |
Muscle Tone- | State of partial contraction |
Tendon- | Strong, tough, connective tissue cords |
Fascia- | Sheet-like membrane that covers the tissue |