Question 16 of 30 Points: 3 They are attached to bones or internal organs and blood vessels and responsible for movement A. Brain B. Stomach C. Tongue D. Muscles Clear selection

The correct answer is **D. Muscles**.<br /><br />Muscles are the tissues responsible for movement in the body. They contract and relax to produce movement of bones at joints (allowing us to walk, run, etc.), as well as movement within internal organs and blood vessels (e.g., peristalsis in the digestive system, constriction and dilation of blood vessels).<br />