h phys spring 10--exam 4

h phys spring 10--exam 4 - Name: TRASK Zool 2200: Human...

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Name: 1 TRASK Zool 2200: Human Physiology Exam 4 4/20/10 Section I: Multiple Choice. Answer each of the following questions by filling in the appropriate bubble on the answer sheet. (56 points total). 1.) An aneur ysm is a weakening of the medial layer of a blood vessel. Which blood vessel would be most likely to break open if an aneurism were present? a.) Capillary. b.) Arteriole. c.) Artery. d.) Venule. e.) Vein. 2.) The vessels that have the most influence on vascular resistance are: a.) Arteries b.) Arterioles c.) Capillaries d.) Venules e.) Veins 3.) Which of the following has the greatest influence on peripheral resistance in the vasculature? a.) Norepinephrine b.) Acetylcholine 4.) Valves are found in: a.) arteries. b.) capillaries. c.) veins. d.) arteries and capillaries. e.) arteries and veins. 5.) Through which of the following would large macromolecules such as very large plasma proteins be expected to most easily diffuse? a.) Arterioles b.) Continuous capillaries c.) Fenestrated capillaries d.) Venules e.) None of the above
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2 6.) When comparing the respiratory to the cardiovascular systems, which of the following does NOT pertain to the cardiovascular system? a.) Flow is inversely proportional to resistance. b.) Somatic neurons signal the generation of a pressure gradient. c.) A muscular pump drives flow. d.) Flow occurs through a conducting system of tubular passages. e.) Baroreceptors (receptors that detect pressure changes) influence the rate at which the pump contracts. 7.) Air traveling from the nasal cavity to the lungs would pass through the following structures in which order? I. Respiratory bronchiole. II. Trachea. III. Secondary bronchus. IV. Larynx V. Alveolar duct. a.) IV, II, III, I, V. b.) IV, II, I, III, V. c.) II, IV, III, I, V. d.) II, IV, III, I, V. e.) IV, II, I, III, V. f.) II, IV, I, III, V. 8.) Which of the following does NOT influence flow in the lungs? a.) P b.) Resistance. c.) Total air pressure. d.) All of the above influence flow. 9.) The muscle(s) that contribute the majority of the effort during respiration is/are: a.) the diaphragm. b.) the external intercostals. c.) the scalenes. d.) the internal intercostals. 10.) When the diaphragm and external intercostal muscles relax, a.) the volume of the thorax increases. b.) the volume of the thorax decreases. c.) the volume of the lungs increases. d.) the lungs collapse. e.) inspiration occurs.
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3 11.) Air moves out of the lungs because: a.) the gas pressure in the lungs is less than outside pressure. b.) the volume of the lungs decreases when respiratory muscles relax. c.) the thorax is muscular. d.) contraction of the diaphragm decreases the volume of the pleural cavity. e.)
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This note was uploaded on 01/03/2012 for the course ZOO 2200 taught by Professor Barbcrippestrask during the Spring '11 term at Weber.

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h phys spring 10--exam 4 - Name: TRASK Zool 2200: Human...

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