Ch 7.5 Key terms
What is Abduction?
Moving a body part toward the midline.
What is contracture?
Severe tightening of a flexor muscle.
What is extension?
Increasing the angle between two bones or straightening a body part.
What is muscle tone?
The state of partial contraction.
What is rotation?
Turning a body part around its own axis.
What is Adduction?
Moving a body part away from the midline.
What is dorsiflexion?
Bending backward or bending the foot toward the knee.
What is fascia?
tough sheetlike membrane that covers and protects the tissue.
WHat is the muscular system?
More than 600 muscles make up the system.
What is the skeletal muscle?
Attached to the bones and causes movement.
What is the cardiac muscle?
Forms the walls of the heart and contracts to circulate blood.
What is elasticity?
Allows the muscle to return to it’s original shape after it has contracted
What is Flexion?
Decreasing the angle between two bones or bending body parts.
What is the origin?
The end that does not move of the bone.
What is supination?
Turning a body part upward.
What is Circumduction?
Moving in a circle at at joint.
What is excitability?
Irritability , the ability to respond to a stimulus such as a nerve impulse.
What is insertion?
The end that moves when the muscle contracts.
What is the plantar flexion?
Bending forward or bending the foot away from the knee.
What does voluntary mean?
Person has control of that action.
What is contractibility ?
Muscle Fibers that are stimulated by nerves contract, or become short and thick which cause movement.
What is extensibility?
The ability to be stretched.
What is involuntary?
They function without conscious thought or control.
What is pronation?
Turning a body part around.
What are visceral muscles?
The smooth muscle.