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- 1. Multiple Choice
In the capillary blood vessels, an exchange of gases takes place with cells. Which one of the following is the correct gas exchange?
Oxygen leaves the capillary to the cell, and nitrogen enters the capillary.
Carbon dioxide leaves the capillary to the cell, and oxygen enters the capillary.
Oxygen leaves the capillary to the cell, and carbon dioxide enters the capillary.
Nitrogen leaves the capillary to the cell, and carbon dioxide enters the capillary.
- 2. Multiple Choice
Which one of the following carries blood away from the heart?
Aorta
Capillary
Vena Cava
Pulmonary vein
- 3. Multiple Choice
Why does an athlete's heart rate increases during exercise?
To provide their muscles with more water.
To provide their heart with oxygen.
To provide their muscles with oxygen.
To provide their heart with carbon dioxide.
- 4. Multiple Choice
Which one of the following statements is correct?
There are only two types of blood cell.
White blood cells contain hemoglobin.
All blood cells are produced in the kidneys.
Blood cells are transported in the plasma.
- 5. Multiple Choice
Which one of the following statements is NOT true for white blood cells?
They have no definite shape.
They are produced in bone marrow.
They are capable of fighting infection.
They are smaller than red blood cells.
- 6. Multiple Choice
What substance gives red blood cells their color?
Plasma
Glucose
Platelets
Hemoglobin
- 7. Multiple Choice
What is the flow of blood in the pulmonary circulation?
Right ventricle ---> lungs ---> left atrium
Right atrium ---> body organ ---->Left ventricle
Right atrium ----> right ventricle ----> lungs
Right ventricle ----> body organs -----> left atrium
- 8. Multiple Choice
A rich blood from the lungs returns to which chamber of the heart?
Right atrium
Right ventricle
Left atrium
Left ventricle
- 9. Multiple Choice
Which component of the blood helps fight diseases?
Plasma
Platelets
Red blood cells
White blood cells
- 10. Multiple Choice
What structure in the heart prevents the back flow of the blood?
Aorta
Valves
Veins
Vena Cava
- 11. Multiple Choice
Why does the body need oxygen?
To eliminate waste product.
To neutralize the carbon dioxide build-up.
To fight disease causing microorganisms.
To burn the food that provides energy to the body.
- 12. Multiple Choice
Which of the following affects the rate of breathing?
Amount of carbon dioxide in the blood.
The amount of red blood cells.
The position of one’s body.
The amount of white blood cells.
- 13. Multiple Choice
What happens during gas exchange in the lungs?
Oxygen and carbon dioxide pass into the blood.
Oxygen passes into the veins and carbon dioxide passes out.
Oxygen passes into the blood and carbon dioxide passes out of the blood.
Oxygen passes out the blood and carbon dioxide passes into the blood.
- 14. Multiple Choice
What is the result when the diaphragm contracts faster?
Faster breathing
Removal of oxygen
Oxygen decreases
Homeostasis
- 15. Multiple Choice
Which affects the amount of oxygen that can enter the body?
Rate of breathing
Exchange of gases
Amount of carbon dioxide
Amount of hemoglobin present
- 16. Multiple Choice
What will happen to a person if the supply of blood to the heart is completely cut off?
Angina
Heart attack
Anemia
Hypertension
- 17. Multiple Choice
In what structure of the blood can the antigens be found?
Plasma
Erythrocytes
Thrombocytes
Fibrinogen
- 18. Multiple Choice
Which of the following statements do not describe the exhaling process?
The chest cavity becomes smaller.
The rib and diaphragm muscles relax.
The rib and diaphragm muscles contract.
The air pressure inside the chest cavity becomes lesser than the outside.
- 19. Multiple Choice
Karen experiences coughing, shortness in breathing, and fatigue. What kind of respiratory disease is she experiencing?
Cough
Cold
Bronchitis
Asthma
- 20. Multiple Choice
What structure in the lungs permit the diffusion of oxygen?
Alveoli
Trachea
Epiglottis
Pleura
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