Phys Exam 2: Ch 16 Matching
| Intermittent contraction of the precapillary sphincters |
| What are vesicular channels? |
| Rare combinations of vesicles |
| Describe interstitial fluid |
| Bundles of collagen fibers and proteoglycan filaments form a gel w/the plasma water, slowing bulk flow, but not small nutrient diffusion |
| Why does it not patter that filtration pressure (13mmHg) is greater than reabsorption pressure (7mmHg)? |
| Venules are more numerous & more permeable (remember, venous is net INWARD), and the lymph system picks up the extra (~2mL/min) |
| Where does the right thoracic duct join? |
| The right lymphatic duct joins the right subclavian vein near the jxn w/the right internal jugular vein |
| What is the value of interstitial fluid hydrostatic pressure in synovial spaces of joints? |
| Discuss the valves of the lymphatic capillaries |
| At each EC overlap, the inside cell is anchored farther from its end, creating 1-way flaps available when interstitial pressure increases. |
| What is the net filtration force at the ARTERIAL end of the capillary? Does this value indicate net fluid into or out of the capillary? |
| Outward forces = 41mmHg; Inward forces = 28mmHg; NET forces = 13mmHg; NET is OUTWARD |
| Describe the structure of a capillary |
| The wall is a single layer of ECs w/a basement membrane on the outside; there are prominent intercellular clefts |
0:00
