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- 1. Multiple Choice
What does your heart do?
pumps blood through your body
protects your body
helps your exercize
- 2. Multiple Choice
Your heart is about the size of your __________.
mouth
fist
show
- 3. Multiple Choice
Blood carries ____________ to the heart.
vitamins
germs
oxygen
- 4. Multiple Choice
Your heart pumps blood throughout your entire body through little tubes called _____________.
veins
arteries
hoses
- 5. Multiple Choice
Blood is carried back to your heart in little tubes called ____________.
veins
arteries
hoses
- 6. Multiple Choice
What does circulate mean?
pump blood
beat quickly
go around and around
- 7. Multiple Choice
You can feel your heart beating when you feel your _____________.
pulse
breathing
stomach growling
- 8. Multiple Choice
Your heart is a _____________.
tube
muscle
vein
- 9. Multiple Choice
Atria pumps blood to the:
Arteries
Body cavities
Veins
Ventricles
- 10. Multiple Choice
The only artery in humans that carries deoxygenated blood is the:
Pulmonary artery
Renal artery
Aorta
Carotid artery
- 11. Multiple Choice
The direction of blood flow through the human body is maintained by:
The elasticity of the vein walls
The pump action of the heart
Muscular contractions
A system of valves
- 12. Multiple Choice
A blood vessel is called an artery when it:
Transports oxygenated blood to the heart
Transports blood to the heart
Contains many valves
Transports blood away from the heart
- 13. Multiple Choice
One of the three functions of the circulatory system is:
Carries waste away from our cells
Helps regulate body temperature
Delivers needed substances to the cells
All of the above
- 14. Multiple Choice
Blood leaves the heart in two vessels, namely the:
Aorta and pulmonary vein
Pulmonary artery and aorta
Aorta and venae cavae
Pulmonary artery and pulmonary vein
- 15. Multiple Choice
What does Deoxygenated mean?Oxygen-richBlood flowOxygen-poorWater Flow - 16. Multiple ChoiceCarbon dioxide is considered a _________________foodwasteenergyfun party favor
- 17. Multiple Choice
Which of the following illustrates the circulatory system?
- 18. Multiple Choice
Type of circulation that refers to blood flow from the heart to the lungs and back to the heart again?
Systemic circulation
Renal circulation
Portal circulation
Pulmonary circulation
- 19. Multiple Choice
Type of circulation that refers to the blood flowing through the entire body?
Systemic circulation
Renal circulation
Portal circulation
Pulmonary circulation
- 20. Multiple Choice
The type of blood vessel that normally carries de-oxygenated blood back to the heart from body cells?
arteries
capillaries
veins
- 21. Multiple Choice
The type of blood vessel where exchange of gases, nutrients, and wastes occurs?
arteries
capillaries
veins
- 22. Multiple ChoiceIdentifyLeft atriumRight atriumLeft ventricleRight ventricle
- 23. Multiple ChoiceIdentifyLeft atriumRight atriumLeft ventricleRight ventricle
- 24. Multiple ChoiceIdentifyLeft atriumRight atriumLeft ventricleRight ventricle
- 25. Multiple Choice
_______ function in the life-saving process of clotting blood.
Phagocytes
Leucocytes
Erythrocytes
Platelets
- 26. Multiple Choice
All of the following are functions of blood except:
Transportation of oxygen and carbon dioxide.
Regulation of body temperature.
Synthesis of vitamins.
Defense against infection.
- 27. Multiple Choice
What protects the body against blood loss?
Clots formed by clusters of leukocytes.
Clots formed by platelets and blood proteins.
Masses of erythrocytes and erythrocyte fragments.
Constriction of capillaries in the damaged area.
- 28. Multiple Choice
The two primary components of whole blood are:
Serum and cells.
Plasma and cells.
Cells and dissolved proteins.
Blood cells and cell fragments.
- 29. Multiple Choice
What are the blood cells?
Erythrocytes, leukocytes, and platelets.
The buffy coat and plasma proteins.
Blood cells, cell fragments, and plasma.
All compounds synthesized by the blood.
- 30. Multiple Choice
The most abundant compound in blood plasma, accounting
for about 92% of the total volume, is:
Oxygen
Gamma-globulin
Sodium chloride
Water
- 31. Multiple Choice
What ensures the unidirectional flow of blood through the
heart?
Constant pressure generated by the heart contractions.
Valves within the heart that prevent backflow of blood.
Squeezing action of smooth muscle tissue in arterial walls.
Continuous osmotic outflow of plasma from capillaries.
- 32. Multiple Choice
Which vessels have thin walls and small diameters that facilitate rapid diffusion of gases and nutrients between blood and body tissues?
Capillaries.
Arterioles.
Venules.
All of the above.
- 33. Multiple Choice
Valves in veins serve to:
Release excessive pressure to protect these thin-walled vessels.
Counteract the crushing force of surrounding skeletal muscles.
Prevent backflow of blood in the absence of high blood pressure.
Adjust blood pressure by compartmentalizing the venae cavae.
- 34. Multiple Choice
The mammalian heart has ___ chambers.
1
2
3
4
- 35. Multiple ChoiceWhich is NOT a function of the circulatory system?deliver O2 and nutrients to cellsremove CO2 and wastes from cellsbreak down carbohydrates into glucosetransport other materials through body
- Answer choicesTagsAnswer choicesTags