Muscular System

Question 0

Adduction

Answer 0

moving the body part toward the midline of the body

Question 1

Abduction

Answer 1

moving a body part away from the midline of the body

Question 2

Cardiac muscle

Answer 2

forms the walls of the heart and contracts to circulate the blood; does not fatigue

Question 3

Circumduction

Answer 3

moving the body part in a circle at a joint- or moving one end of a body Parton a circle while the other end remains stationary, such as swinging an arm in a circle

Question 4

Contract

Answer 4

when muscle fibers become short and thick-causing resulting muscle movement

Answer 5

the ability of muscle fibers to be stimulated by nerves

Question 6

Contracture

Answer 6

a severe tightening of a flexor muscle resulting in the blending of a joint.

Answer 7

allows the muscle to return to it’s original shape after it has contracted or stretched

Answer 8

muscles irritability; the ability to respond to a stimulus, such as a nerve impulse

Answer 9

the ability of a muscle to be stretched

Question 10

Extension

Answer 10

increasing the angle between two bones, or straightening a body part

Question 11

Fascia

Answer 11

a tough, sheet like membrane that covers and protects the muscle tissue

Question 12

Flexion

Answer 12

decreasing the angle between the bones or bending a body part

Question 13

Insertion

Answer 13

the (distal) end of the muscle that moves when the muscle contracts

Question 14

Involuntary

Answer 14

cardiac and smooth muscle cells function without conscious control (I.e., involuntarily)

Question 15

Muscle tone

Answer 15

results from the fact that muscles are partially contracted at all times, even when not in use

Question 16

Muscular system

Answer 16

comprised of the more than 600 cardiac, skeletal (superficial and deep) and smooth muscles of the body

Question 17

Origin

Answer 17

a proximal end of a muscle that attaches to a bone and does not move

Question 18

Rotation

Answer 18

turning a body part around its own axis; for ex., turning the head from side-to-side

Question 19

Skeletal muscle

Answer 19

superficial and deep muscle; voluntary/ under control; attaches to bone and causes body movement

Question 20

Tendons

Answer 20

strong, tough, white, fibrous connective tissue cords which attach skeletal muscles; voluntary/ under conscious control; attaches to bone and causes body movement

Question 21

Visceral (smooth) muscle

Answer 21

involuntary muscles found in the digestive and respiratory system, around blood vessels and the eyes; contracts to cause involuntary (I.e., not under conscious control) movement

Question 22

Voluntary

Answer 22

skeletal (superficial and deep) muscle which moves under conscious, voluntary control