3. Briefly answer the following questions.

a. Define the digestive system.

b. What is the respiratory system? Write in a sentence.

c. How do you define the circulatory system?

d. Define the urinary system.

e. Which two systems does the pharynx ensure proper functioning? Name them.

f. What is the primary function of the urinary system?

g. Which organ in the urinary system is responsible for filtering blood and producing urine?

h. What is the smallest functional unit of the kidney involved in urine formation?



Answer :

Final answer:

The digestive system processes food into nutrients, the respiratory system exchanges oxygen and carbon dioxide, and the urinary system eliminates waste through urine production.


Explanation:

Digestive System: The digestive system is responsible for breaking down food into nutrients that can be absorbed by the body.

Respiratory System: The respiratory system is involved in the exchange of oxygen and carbon dioxide between the body and the environment.

Urinary System: The urinary system eliminates waste products from the body through the production and excretion of urine.


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