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exercise_cardio_topic_10

exercise_cardio_topic_10 - 6 Bulk fluid flows cause at the...

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The Cardiovascular System: Autoregulation and Capillary Dynamics 1. a. What regulates the flow of blood into true capillaries? ________________ b. If all sphincters are closed, blood is ___________ to the venules through _____________ capillaries. 2. Use arrows to show whether high or low levels of the following would cause the feeder arterioles to dilate and the sphincters to relax: a. O 2 ________ c. pH ________ b. CO 2 ________ d. nutrients ________ 3. Physical factors also act as regulatory stimuli. How would the following affect arterioles? a. Decreased blood pressure ____________________ b. Increased blood pressure ____________________ 4. Name three structural characteristics of capillaries which allow for passage of materials out of the capillaries. a. b. c. 5. a. Diffusion accounts for the passage of _________________________. b. Non-lipid soluble molecules move by _________________________. c. Water-soluble solutes, such as amino acids and sugars, move through
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Unformatted text preview: _________________. 6. Bulk fluid flows cause _____________ at the arterial end and ________________ at the venous end of the capillary. 7. a. In a capillary, what is equivalent to hydrostatic pressure? b. Why is hydrostatic pressure low in the interstitial fluid? c. Net hydrostatic pressure tends to move fluid ______ the capillary. 8. a. Osmotic (or Colloid Osmotic) pressure in the capillaries is _____________ compared to the interstitium. b. Net osmotic pressure tends to move fluid _________ the capillaries. 9. Given a net hydrostatic pressure of 34 mmHg and a net osmotic pressure of 22 mmHg, the force favoring filtration would equal _____ mmHg. 10. Indicate which of the following which move through the capillary walls by diffusion and which move through fenestrations and/or clefts: a. Butter: b. Fish: c. Cola: d. Potatoes:...
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