Muscles in the human body are classified, compared with bones, as ____ parts., hard and rigid, soft and flexible, bony and strong, fixed and unchanging, A muscle becomes hard during movement because it ____., receives more blood, contracts and shortens, disappears completely turns into bone tissue, turns into bone tissue, When you move your arm from the bent position to the straight position, the back muscle changes from ____., contraction to relaxation, relaxation to contraction, hardness to softness, contraction to hardness, Proper arm movement depends on the front and back muscles working by ____., each muscle working alone, working alternately, continuous contraction of both muscles, continuous relaxation of both muscles, When bending the arm, the front muscle ____., relaxes and lengthens, becomes thin, contracts and becomes harder, remains unchanged, During contraction, muscles move bones by ____., pushing, pulling, pressing, breaking

Choose the correct answer:

by
Print
Embed

Leaderboard

Visual style

Options

Switch template

Continue editing: ?