A. True 

    B. False

2. The state of internal balance or “steady state of the body” is called ______.

     A. Hemoglobin

     B. Homeostasis

3. Life would be possible without the organ systems functioning well.

    A. True

    B. False

4. The ______ receives and responds to inputs from the environment.

     A. Sensory

     B. Nervous

5. The skeletal system provides the framework of the body.

     A. True

     B. False

6. The muscular system makes body movement possible.

     A. True

     B. False

7. Vision is mediated by the _____.

     A. Ears

     B. Eyes

8. The ______ system distributes blood throughout the body.

     A. Excretory

     B. Circulatory

9. The nervous system primarily pumps blood throughout the body.

     A. True

     B. False

10. The endocrine system produces chemicals called _______.

     A. Blood

     B. Hormones

11. Diabetes characterized by a deficiency of ______.

     A. Insulin

     B. Estrogen

12. The respiratory system is needed for thinking and remembering.

     A. True

     B. False

13. The human body has ten organ systems.

      A. True

      B. False

14. Estrogen is produced in the __________.

      A. Ovary

      B. Liver

15. The skeletal is made up of bones.

      A. True

      B. False

16. Signals from the sensory organs go to the _____ to be processed.

      A. Heart

      B. Brain