Chapter 22

Question 1

Muscles account for ___-____% of body weight

Answer 1

40-50

Question 2

Flexion

Answer 2

Bending a limb at a joint

Question 3

Extension

Answer 3

Straightening a limb at the joint

Question 4

Abduction

Answer 4

Moving a limb away from the midline of the body

Question 5

Adduction

Answer 5

Moving a limb toward the midline of the body

Question 6

Pronation

Answer 6

Turning the forearm so the palm is facing down

Question 7

Supination

Answer 7

Turning the forearm so the palm is facing up

Question 8

Circumduction

Answer 8

Moving the arm in a circle around the shoulder

Question 9

Inversion

Answer 9

Moving the sole of the foot inward at the ankle

Question 10

Eversion

Answer 10

Moving the sole of the foot outward at the ankle

Question 11

Rotation

Answer 11

Moving the head around a central axis

Question 12

Protraction

Answer 12

Moving a body part forward and parallel to the ground

Question 13

Retraction

Answer 13

Moving a body part backward and parallel to the ground

Question 14

Elevation

Answer 14

Raising a body part

Question 15

Depression

Answer 15

Lowering a body part

Question 16

Any trauma or infection of the growth plates (growth plates aka epiphysis) in infants and children cause what

Answer 16

The growing child to be at risk for nine deformity

Question 17

Lin infants and children, muscle and fat are significant in?

Answer 17

Weight increase

Question 18

Muscles vary in size and strength in different people because of?

Answer 18

Genetic programming, nutrition, and exercise

Question 19

All muscles through life either___ with use or ____ with disuse

Answer 19

Increase/atrophy

Question 20

What causes increased mobility in joints of pregnant women?

Answer 20

The increased levels of circulating hormones (estrogen, relaxin from the corpus luteum, and corticosteroids)

Question 21

Functions of the musculoskeletal system (5)

Answer 21

For support to stand erect

Movement

To encase and protect inner vital organs

To produce red & white blood cells and platelets in bone marrow

A reservoir for storage of essential minerals such as calcium and phosphorous in the bones