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10 Cards in this Set
- Front
- Back
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21. Match each organ or structure with the major artery responsible for its blood supply. Select your answer from the pull-down list.
a. Arms b. Liver c. Head d. Legs e. Kidney 1. Common hepatic 2. Renal 3. Superior mesenteric 4. Axillary 5. Carotid 6. Femoral |
A = Axillary
B= Common Hepatic C = Carotid D = Femoral E = Renal |
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22. How does the circulatory system help maintain a constant pH in extracellular fluids? Select one.
A. Blood transports carbon dioxide away from its cellular sources to be exhaled through the lungs. B. Amino acids from protein metabolism are neutralized in the blood with basic salts. C. Water concentration in the plasma changes in response to hydrogen ion concentration fluctuations. D. Oxygen dissolved in the plasma buffers changes in sodium ion concentration. |
C. Water concentration in the plasma changes in response to hydrogen ion concentration fluctuations.
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23. How do the anatomical structures of the heart facilitate the movement of blood? Choose 2 answers
A. Intact heart valves allow blood to flow in only one direction. B. The sinoatrial node coordinates cardiac contractions, ensuring that the atria contract before the ventricles. C. The thick walls of the superior ventricles help fill the inferior chambers. D. The fibrous pericardium lining the heart enhances the smooth flow of blood. E. The stretching of the pulmonary valves decreases cardiac contraction. |
A. Intact heart valves allow blood to flow in only one direction. B. The sinoatrial node coordinates cardiac contractions, ensuring that the atria contract before the ventricles. |
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24. Which of the following are characteristics of the early diastolic period of the cardiac cycle? Choose 3 answers
A. Semilunar valves close to prevent backflow. B. Blood flows from the left ventricle into the aorta. C. Atrioventricular valves open. D. The atrioventricular valves are closed. E. Ventricular pressure is greater than atrial pressure. F. Ventriclular pressure drops and the ventricles begin to fill with blood. |
A. Semilunar valves close to prevent backflow. C. Atrioventricular valves open. F. Ventriclular pressure drops and the ventricles begin to fill with blood. |
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25. Blood has entered the superior vena cava. Trace the path of a blood droplet from the first (1) to last (5) structure it passes through from the superior vena cava to the lungs. Select your answer from the pull-down list.
a. Right atrium b. Tricuspid valve c. Right ventricle d. Pulmonary valve e. Pulmonary arteries 1,2,3,4,5 |
Right Atrium 1
Tricuspid 2 Right Ventricle 3 Pulmonary Valve 4 Pulmonary arteries 5 |
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26. Identify the structures that expired air passes through from first (1) to last (7) as it exits the lungs. Select your answer from the pull-down list.
a. Alveolus b. Alveolar duct c. Respiratory bronchiole d. Terminal bronchiole e. Tertiary bronchi f. Main bronchi g. Trachea Put in order 1,2,3,4,5,6,7 |
unknow
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27. What are functions of the larynx? Choose 3 answers
A. Provide sensory input for a cough reflex B. Drain the middle ear C. Play a major role in speech production D. Direct air and food into the proper channels E. Protect the superior opening of the pharynx |
C. Play a major role in speech production
D. Direct air and food into the proper channels E. Protect the superior opening of the pharynx |
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29. How does oxygen move from the alveoli into the blood? Choose 2 answers
A. Diffuses from the air in the alveoli into the blood B. Is carried by transporter proteins from the alveoli into the blood C. Changes to CO2 in the alveoli and then moves into the blood D. Is pulled by osmosis from the alveoli into the bloodstream E. Crosses simple squamous cells of the alveolar and capillary walls |
A. Diffuses from the air in the alveoli into the blood E. Crosses simple squamous cells of the alveolar and capillary walls |
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30. How do the muscles responsible for inspiration change the intrathoracic volume? Select one.
A. Contraction increases the volume. B. Contraction decreases the volume. C. Partial contraction decreases the volume. D. Relaxation increases the volume. |
A. Contraction increases the volume.
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