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Cardiovascula system

the heart

QuestionAnswer
What is the circulatory system? 1. The body's breathing system 2. The body's system of nerves 3. The body's food-processing system 4. The body's blood-transporting system 4. The body's blood-transporting system
Which of the following statements best describes arteries? a. all arteries carry oxygenated blood towards the heart b. all arteries contain valves to prevent the back-flow of blood c. all arteries carry blood away from the heart d. only large art c. all arteries carry blood away from the heart
The exchange of gases and nutrients between blood and tissues is a major function of: a. arterioles b. arteries c. capillaries d. veins c. capillaries
From what source do cells get their food? 1 Blood 2 Oxygen 3 Other cells 4 Carbon dioxide 1 Blood
If the heart’s natural pacemaker fails to fire, then: a. no blood would enter the atria b. no blood would enter the ventricles c. the node on the floor of the right atrium would act as a secondary pacemaker d. the node on the floor of the le c. the node on the floor of the right atrium would act as a secondary pacemaker
Why is oxygen important to blood and to the cells? 1 Oxygen helps the blood to clot. 2 Oxygen brings food to the cells. 3 Oxygen is necessary for cell growth and energy. 4 Oxygen is not important -- carbon dioxide is the most important substa 3 Oxygen is necessary for cell growth and energy.
Immediately following strenuous and vigorous exercise, which of the following is most likely to occur? a. blood will be rapidly diverted to the digestive organs b. the skin will be cold and clammy c. capillaries of the active muscles will be eng c. capillaries of the active muscles will be engorged with blood
Which type of blood vessels carries blood away from the heart? 1 Veins 2 Arteries 3 Capillaries 4 Arteries, veins and capillaries 2 Arteries
Why is blood that flows from the lungs to the heart bright red rather than dark red? 1 Oxygen makes it red. 2 Carbon dioxide makes it red. 3 Gastric juices produce the red colour of the blood. 4 The lungs add a pigment (dye) to blood as it flo 1 Oxygen makes it red.
What part of the blood carries minerals, vitamins, sugar, and other foods to the body's cells? 1 Plasma 2 Platelets 3 Red corpuscles 4 White corpuscles 1 Plasma
What is the main job of the red corpuscles in the blood? 1 To clot blood 2 To fight disease 3 To transport oxygen to the body's cells and carry away carbon dioxide from the cells 4 To transport carbon dioxide to the body's cells and carry aw 3 To transport oxygen to the body's cells and carry away carbon dioxide from the cells
Which of the following can best be compared to soldiers? 1 Lungs 2 Capillaries 3 Red blood cells 4 White blood cells 4 White blood cells
Which element in the blood is round and colourless? 1 Plasma 2 Platelets 3 Red blood cells 4 White blood cells 4 White blood cells
What would happen to people who have an open wound and whose blood did not clot naturally? 1 They would bleed to death. 2 Nothing. Clotting is not important. 3 They would have to take special clotting drugs. 4 They would have to take regular d 1 They would bleed to death.
What happens when a clot occurred in an undamaged blood vessel? 1 You would bleed to death. 2 A scab will form on the skin surface. 3 Platelets stick to the edges of the cut and to one another, forming a plug. 4 The flow of blood to tissues b 4 The flow of blood to tissues beyond the clot may be cut off.
What happens to blood when it is pumped into the thin-walled blood vessels of the lungs? 1 Platelets are exchanged for plasma. 2 Carbon dioxide is replaced with oxygen. 3 Blood fills the lungs and causes coughing. 4 Nothing -- the lungs are ju 2 Carbon dioxide is replaced with oxygen.
Created by: Bourgaize