11. The Nervous system is divided into three parts: central nervous system, peripheral nervous system, and:
(a) Outer nervous system
(b) Self nervous system
(c) Automatic nervous system
(d) None of these
12. The peripheral nervous system consists of twelve pairs of cranial nerves located in and near the medulla oblongata at the rear of the brain and thirty-one pairs of spinal nerves originating in the spinal cord. What is its function?
(a) Carries messages to the central nervous system
(b) Carries messages to and from the central nervous system
(c) Carries messages from the central nervous system
(d) Controls involuntary actions
13. The automatic nervous system controls involuntary actions such as:
(a) Heartbeat
(b) Digestion
(c) Both of them
(d) None of them
14. Name the process of relaxation of the wall and diaphragms that allows the release of the air, which is depleted of oxygen and enriched with carbon dioxide?
(a) Inspiration
(b) Expiration
(c) None of them
15. Which system of organs removes waste products and excess water from the bodies of animals?
(a) Gland system
(b) Urinary system
(c) Respiratory system
(d) Nervous system
16. In the urinary system, a pair of kidneys produces urine, ureters drain the kidneys. What is the function of the bladder in the urinary system?
(a) Discharge the urine
(b) Store the urine before discharge
(c) Clean the urine
(d) Mix chemicals with urine
17. Which part of the following helps to keep the body in balance?
(a) Inner ear
(b) Outer ear
(c) Ear drum
(d) Ear bladder
18. The right kidney usually lies slightly lower than the left in order to accommodate the:
(a) Urinary glands
(b) Liver
(c) Heart
(d) Sex glands
19. What is the function of kidneys in the human body?
(a) It regulates the pH
(b) It regulates the mineral ion concentration
(c) It filters the blood
(d) All of the above
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