Chapter 19 Blood Vessels

Chapter 19 Blood Vessels - 1 YourAnswer tunicaintima...

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1. The vessel layer that has a direct role in vasoconstriction is the:  Your Answer: tunica intima.   Correct Answer: tunica media.     2. Blood flows directly from _____ into capillary beds. Your Answer: venules   Correct Answer: arterioles     3. The vessels that exhibit the lowest level of permeability are the: Your Answer: capillaries found in the kidney.  
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Correct Answer: continuous capillaries.     4. When would the capillary beds surrounding the gastrointestinal organs be open? Your Answer: During a meal   5. Baroreceptors are effective in long-term regulation of blood pressure. Your Answer: False 6. Which of the following is  true  when comparing arteries and veins? Your Answer: Arteries are less muscular than veins.  Correct Answer: Arteries carry blood away from the heart; veins carry blood to the heart.    
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7. Blood flow would be  increased  by:  Your Answer: decreasing vessel diameter.   Correct Answer: increasing cardiac output.     8. Match the following: Option Your Answer: Correct Answer: 8.1 Systolic pressure     A. Peak of aortic pressure     A. Peak of aortic pressure     8.2 Diastolic pressure     B. Lowest level of aortic pressure     B. Lowest level of aortic pressure    
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8.3 Pulse pressure     C. Pressure that propels blood to the tissues     D. The difference between systolic and diastolic pressure     8.4 Mean arterial pressure     D. The difference between systolic and diastolic pressure     C. Pressure that propels blood to the tissues       9. Which of the following acts on the kidneys to  raise  blood pressure? Your Answer: Angiotensin II   Correct Answer: Antidiuretic hormone    10. Hypertension is defined physiologically as a condition of sustained arterial pressure of ______ or higher. Your Answer: 130/80  
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Correct Answer: 140/90     11. If the net filtration pressure (NFP) is positive, then fluid is reabsorbed into the blood. Your Answer: True Correct Answer: False   12. Which of the following would experience  increased  blood flow during exercise? Your Answer: Kidneys   Correct Answer: Skin     13.
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Fluids would be likely to leave or filter out of the capillary if:  Your Answer: net filtration pressure (NFP) is negative.   Correct Answer: net hydrostatic pressure (HP) is greater than net osmotic pressure (OP).
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