Term
| What are the three types of capillary exchange |
|
Definition
| diffusion, transcytosis, bulk transport |
|
|
Term
| What is capillary exchange |
|
Definition
| the movement of substances in and out of the capillary |
|
|
Term
|
Definition
| a swelling caused by an abnormal increase in interstitial fluid |
|
|
Term
| What is the most important method of capillary exchange |
|
Definition
|
|
Term
|
Definition
| the movement of substances down their concentration gradient |
|
|
Term
| What substances are diffused through continuous capillaries |
|
Definition
| oxygen, hormones, amino acids, glucose, carbon dioxide |
|
|
Term
| What capillaries allow larger substances to diffuse across them |
|
Definition
| fenestrated and sinusoid capillaries |
|
|
Term
| Where is diffusion across capillaries restricted and why |
|
Definition
| in the brain due to the blood brain barrier |
|
|
Term
| How are substances transported in transcytosis |
|
Definition
| from the blood into the endothelial cell via endocytosis then out of the endothelial cell to the other side via exocytosis |
|
|
Term
| What substances utilize transcytosis and give two examples |
|
Definition
| large lipid insoluble substances such as insulin and antibodies |
|
|
Term
|
Definition
| the movement of a large amount of substances in fluid down a pressure gradient |
|
|
Term
| What two processes are involved in bulk transport |
|
Definition
| filtration and reabsorption |
|
|
Term
|
Definition
| the flow of liquid out of the capillaries and into the interstitial fluid |
|
|
Term
| What force is filtration driven by |
|
Definition
| blood hydrostatic pressure |
|
|
Term
| What is blood hydrostatic pressure |
|
Definition
| the force the water in the blood exerts on the vascular walls |
|
|
Term
|
Definition
| the movement of fluid from the interstitial fluid into the capillary |
|
|
Term
| What force is reabsorption driven by |
|
Definition
| blood colloid osmotic pressure |
|
|
Term
| What is the function of filtration and reabsorption |
|
Definition
| to balance the levels of interstitial fluid and blood volume |
|
|
Term
| What are the BHP and BCOP values at the arterial end of a capillary |
|
Definition
|
|
Term
| What process happens at the arterial end of the capillary |
|
Definition
|
|
Term
| What are the BHP and BCOP values at the venous end of the capillary |
|
Definition
|
|
Term
| What process happens at the venous end of the capillary |
|
Definition
|
|
Term
| How much fluid is filtered out of the capillaries daily |
|
Definition
|
|
Term
| How much fluid is reabsorbed by the capillaries daily |
|
Definition
|
|
Term
| What happens to the 3L of fluid that is not reabsorbed by the capillaries |
|
Definition
| it is picked up by lymphatic vessels and eventually returned to the blood stream |
|
|
Term
| What causes edema (in terms of pressure) |
|
Definition
| increased BHP decreased BCOP |
|
|
