Mass Transport- Tissue Fluid

Question 1

Where is tissue fluid formed and reabsorbed?

Answer 1

Formed- Arteriole end

Reabsorbed- Venule end

Question 2

What causes the high hydrostatic pressure at the arteriole end of the capillary?

Answer 2

The contraction of the left ventricle in ventricular systole.

Question 3

What does high hydrostatic pressure force out of the capillaries?

Answer 3

Water
Salts
Nutrients
Glucose
Oxygen

Question 4

What does the plasma proteins result in, in the capillary?

Answer 4

Low water potential

Osmotic difference causing osmotic pull

Question 5

Why do water and solutes re-enter the capillary at the venule end?

Answer 5

The hydrostatic pressure is lower than the osmotic pull

Question 6

What is tissue fluid the site of?

Answer 6

Exchange of metabolites, such as oxygen, glucose, ions etc.

Question 7

What causes the drop in hydrostatic pressure?

Answer 7

The loss of fluid from the capillary at the arteriole end

The resistance and friction of the blood flowing through the narrow lumen

Question 8

What happens to the surplus tissue fluid?

Answer 8

It drains into lymphatic vessels

Question 9

Once in the lymphatic vessels, what happens to lymph?

Answer 9

It will eventually return to the blood via the thoracic duct in the neck

Question 10

What are the functions of the lymphatic system?

Answer 10

Major part of the immune systems
contains lymph nodes which traps pathogens and foreign substances
contains lymphatic tissue which contain large amounts of white cells