G9_SCIENCE

1. Which of the following best describes systemic circulation? Blood circulation from the ________.

• a. heart going to the lungs and back to the heart

• b. heart going to the lungs and other parts of the body

• c. heart to the different parts of the body back to the heart

• d. lungs to the different parts of the body back to the heart

When we inhale, what happens to our diaphragm muscle?

                         

• a. Relaxes

• b. Contracts

• c. Expands

• d. No changes

Respiratory system is one of the body systems that makes up an organism. How does respiratory

system contribute to the overall functioning of the body?

           

           

           

   

• a. It allows the body to get rid of the solid wastes it produces.

• b. It supplies oxygen for the body and expels carbon dioxide from the body

• c. It pumps blood into the different parts of the body through tiny blood vessel

•          d. It is responsible for the control of the different body activities and functions

How does the body prevent dust, dirt, and other tiny particles from entering the body?

           

           

         

           

• a. The mucus membrane secretes mucus that traps irritants like dust and cilia filter these particles

• b. The trachea screens these particles

•    c. The larynx and the pharynx trap these particles along with epiglottis

• d. The lungs get rid of these particles through exhalation.

Atheena was active in both academic and sports activities. She was a volleyball player in her school

and after class, she practices vigorously for at least an hour. What happens to the heart rate of a

person after a strenuous activity?

                                           

• a. increases

• b. decreases

• c. fluctuates

•   d. sustains

Gabrielle wants to prevent disease in her respiratory and circulatory systems by having a healthy

lifestyle. Which of the following must be avoided?

• a. Eating on time and balanced diet

• b. Sleeping at least 7hours and regular exercise

• c. Avoiding vices such as cigarette smoking and alcohol drinking

• d. Playing computer or cellphone games for 5 hours late night to remove stress

Mark is a contestant in a marathon yet he did not sleep well last night. He felt dizzy and fainted in the

middle of the race. Why do you think this happen?

• a. Blood cells didn’t get the necessary amount of oxygen to the body parts.

• b. Oxygen blood levels of the body were normal.

• c. He had low blood pressure.

• d. None of the above.

How does the respiratory and circulatory system work together?

Respiratory system ___________________ while circulatory system ______________________.

• a. provides nutrients, absorbs water 

• b. transports blood, facilitates gas exchange

• c. facilitates gas exchange, transports blood

• d. creates immune cells, provides a framework

Which of the following makes up the circulatory system?

• a. blood, blood vessels, heart

• b. blood, blood vessels, lungs

• c. blood vessels, heart, lungs, nasal cavity

• d. blood, blood vessels, alveoli, heart, lungs

What kind of blood circulates from the heart to the other parts of the body?

      

                

• a.     Carbon dioxide rich blood  

• b.     Oxygen rich blood  

• c. Deoxygenated blood

•    d. Arteries