Bones, Muscles and Skin Review

The process by which an organism's internal environment is kept stable in spite of changes in the external environment is called...

• respiration

• homeostasis

• digestion

What muscles do you use to lift a book?

• skeletal muscles

• cardiac muscles

• smooth muscles

Which of the following is NOT a function of the skeletal system?

• producing vitamin D

• providing shape and support

• protecting internal organs

The pigment melanin in the skin functions to...

• keep water within the skin

• help protect the skin from sunburn

• produces new living cells in the epidermis

Which type of muscle tires quickly during exercise?

• smooth

• skeletal

• cardiac

Which type of muscle is found only in the heart?

• cardiac

• skeletal

• voluntary

How does the skin help regulate body temperature?

• by removing wastes from the body

• by enabling excess heat to escape from the body

• by blocking information about the environment

Which of the following connects bone to bone at a joint?

• ligament

• tendon

How does the skin protect us?

• by sensing pain

• by producing blood cells

• by storing minerals like calcium and phosphorus

Which layer of the skin is waterproof and keeps out germs and bacteria?

• dermis

• epidermis