ASU Bio 181 Final Exam
1. The blood flow slows down in the capillaries because the increased total area
of the capillary is very large.: True
2. Tidal breathing causes the incoming air to mix with some older air in the
lungs: True
3. The Circulatory System: Oxygen is distributed throughout the body by
4. When the diaphragm is relaxed, it allows air to leave the lungs including the
residual volume.: False
5. The heart pace maker that triggers the two atria to contract is the ______
______.: Sinoatrial Node
6. Veins and Venules have valves in them, but arteries and arterioles do not: True
7. When the ventricles contract blood is pushed out into the artery and the
artery stretches because of its elastic layers allowing the blood to continue to
flow into the circulatory system while the ventricle is relaxing.: True
8. The slow flow of blood in the capillaries facilitates the production of bicarbon-
ates in the blood: True
9. Surfactants is one of the later components made in the fetus (prior to birth)-
: True
10. To prevent back flow of blood in the heart there are _____________: Valves
11. When the systole occurs the ventricle is contracting: True
12. Blood moves very rapidly in the capillaries: False
13. Once inside the circulatory system ________ is the molecule that binds oxy-
gen: Hemoglobin
14. The atrioventricular node fires after the sinoatrial node: True
15. In mammals ventilation is tidal: True
16. Nutrients and oxygen can leave the arteries and arterioles to reach the
cells: False
17. The slow flow of blood in the capillaries facilitates release of oxygen.: True
18. The pulmonary artery contains oxygenated blood: False
19. The inspiratory and the expiratory reserves make up the total volume in the
lungs: False
20. There is a reserve of oxygen in the muscles held by ____.: Myoglobin
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1. The blood flow slows down in the capillaries because the increased total area
of the capillary is very large.: True
2. Tidal breathing causes the incoming air to mix with some older air in the
lungs: True
3. The Circulatory System: Oxygen is distributed throughout the body by
4. When the diaphragm is relaxed, it allows air to leave the lungs including the
residual volume.: False
5. The heart pace maker that triggers the two atria to contract is the ______
______.: Sinoatrial Node
6. Veins and Venules have valves in them, but arteries and arterioles do not: True
7. When the ventricles contract blood is pushed out into the artery and the
artery stretches because of its elastic layers allowing the blood to continue to
flow into the circulatory system while the ventricle is relaxing.: True
8. The slow flow of blood in the capillaries facilitates the production of bicarbon-
ates in the blood: True
9. Surfactants is one of the later components made in the fetus (prior to birth)-
: True
10. To prevent back flow of blood in the heart there are _____________: Valves
11. When the systole occurs the ventricle is contracting: True
12. Blood moves very rapidly in the capillaries: False
13. Once inside the circulatory system ________ is the molecule that binds oxy-
gen: Hemoglobin
14. The atrioventricular node fires after the sinoatrial node: True
15. In mammals ventilation is tidal: True
16. Nutrients and oxygen can leave the arteries and arterioles to reach the
cells: False
17. The slow flow of blood in the capillaries facilitates release of oxygen.: True
18. The pulmonary artery contains oxygenated blood: False
19. The inspiratory and the expiratory reserves make up the total volume in the
lungs: False
20. There is a reserve of oxygen in the muscles held by ____.: Myoglobin
1/4
