10. It is a hollow muscular organ located between lungs and it is protected by the ribcage.
A. Kidney
B. heart
C. longs
D. brain
11. It filters the oxygen that enters our body because it contains a filtering structure to ensure the heart receives clean oxygen.
A. Kidney
B. heart
C. lungs
D. brain
12. It supports each other to allow distribution of nutrients and oxygen to all parts of the body and the removal of carbon dioxide as a waste product in the body
A. Heart and lungs
B. stomach and intestines
C. Kidney and heart
D. brain and skeleton
13. What happens to the diaphragm when we breathe in or inhale (takes in oxygen)
A. it expands
B. it contracts
C. it relaxes
D. nothing happens
14. When a person breathe out, or exhale, the diaphragm and rib muscles
A. expands
B. contracts
C.relaxes
D. nothing happens
15. Which is the command center of the body? A. blood
B. brain
C. heart
D. stomach
16. Which of the following is NOT a voluntary activity?
A. breathing
B. memorizing
C. problem solving
D. thinking
17. Which of the following is an example of an involuntary activity of the body which the brain controls
A. eating
B. running
C. walking
D. beating of the heart
18. Which of the following is not a function of the brain?
A. It coordinates muscular actions.
B. It connects the brain to the spinal cord.
C. It filters the oxygen that enters the body.
D. It processes information and sends instruction.
19. Which of the following shows the correct function of the brain
A. It contains digestive juice called pepsin.
B. It removes body wastes like urine and urea from the blood.
C.It controls the voluntary and involuntary activities of the body.
D. It pumps blood for the distribution of nutrients to body parts.
20. What is the reason why some patients with a damaged brain could not see anymore
A. The eyes were damaged like the brain.
B. The brain cannot connect anymore with the eyes.
C. The part of the brain responsible for seeing was damaged.
D. The brain cannot receive and send information due to the damage.
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