Capillaries & Lymph
Help!
|
|
||||
|---|---|---|---|---|---|
| What is a precapillary sphincter? | show 🗑
|
||||
| show | Intermittent contraction of the precapillary sphincters
🗑
|
||||
| What is the flow rate generally dependent upon? | show 🗑
|
||||
| TRUE or FALSE: "True" capillaries have no smooth muscle | show 🗑
|
||||
| Describe the structure of a capillary | show 🗑
|
||||
| show | FALSE: ECs are separated by intercellular cleft, thru which fluid & small dissolved molecules can flow
🗑
|
||||
| What is the fxn of the plasmalemma in regards to material transport? | show 🗑
|
||||
| show | Rare combinations of vesicles
🗑
|
||||
| What sorts of nutrients can diffuse directly thru a cell membrane? | show 🗑
|
||||
| How do water soluble materials diffuse? | show 🗑
|
||||
| show | Brain: pores are almost sealed by tight jxns; Liver: pores are much larger
🗑
|
||||
| show | Fluid in the spaces b/n the cells
🗑
|
||||
| Describe interstitial fluid | show 🗑
|
||||
| What happens when there is a lot of intercellular water flow? | show 🗑
|
||||
| What determines the osmotic pressures of a capillary? | show 🗑
|
||||
| show | NFP = Capillary pressure - Interstitial fluid pressure - Plasma colloid pressure + interstitial fluid colloid osmotic pressure
🗑
|
||||
| Which forces are responsible for the pressure pushing/pulling out of the capillary? Pushing/pulling into the capillary? | show 🗑
|
||||
| show | By an isogravimetric method - ~17mmHg
🗑
|
||||
| show | ~25mmHg; when the precapillary sphincter is closed, pressure equals that of a venule (~10mmHg), so the pressure averages ~17mmHg
🗑
|
||||
| What is the value of interstitial fluid hydrostatic pressure in loose subQ tissue? | show 🗑
|
||||
| show | ~ -5mmHg
🗑
|
||||
| What is the value of interstitial fluid hydrostatic pressure in the epidural space? | show 🗑
|
||||
| What is the value of interstitial fluid hydrostatic pressure in the intrapleural space? | show 🗑
|
||||
| show | Removal of fluid from the interstitial space by the lymph system.
🗑
|
||||
| Describe Plasma Colloid Osmotic Pressure | show 🗑
|
||||
| show | Normal = 28mmHg; 19mmHg due to dissolved protein, 9mmHg due to Na & K "held" by that protein (called the Donnan effect)
🗑
|
||||
| show | Some protein does leak from the plasma; Net interstitial fluid (Pi-if) = 8mmHg
🗑
|
||||
| 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? | show 🗑
|
||||
| What is the net filtration force at the VENOUS end of the capillary? Does this value indicate net fluid into or out of the capillary? | show 🗑
|
||||
| show | Hydrostatic force (BP)
🗑
|
||||
| show | Osmotic pressure
🗑
|
||||
| Why does it not patter that filtration pressure (13mmHg) is greater than reabsorption pressure (7mmHg)? | show 🗑
|
||||
| What are the 5 functions of the lymphatic system? | show 🗑
|
||||
| What drains into the left thoracic lymph duct? | show 🗑
|
||||
| Where does the left thoracic duct join? | show 🗑
|
||||
| show | Lymphatics from the right arm, shoulder,and upper chest
🗑
|
||||
| Where does the right thoracic duct join? | show 🗑
|
||||
| Discuss the valves of the lymphatic capillaries | show 🗑
|
||||
| What happens when the pressure equilibrates and the lymphatic capillary is compressed? | show 🗑
|
||||
| show | Lymphatic capillary
🗑
|
||||
| What are the cellular extensions into the main lymphatic channel called? | show 🗑
|
||||
| show | The valves are pushed open
🗑
|
||||
| What happens when the lymphatics are compressed? | show 🗑
|
||||
| What are the forces driving lymph flow | show 🗑
|
||||
| When smooth muscle cells on the walls of lymphatic capillaries contract, about how high can the pressure in the large thoracic duct reach? | show 🗑
|
||||
| show |
🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Created by:
hclark86
Popular Physiology sets