A5 Mass transport in animals

Question 1

Describe the role of the hydrostatic pressure of the blood and of osmosis in the formation and reabsorption of tissue fluid

Answer 1

There is high hydrostatic pressure at the arteriole end of the capillary bed to allow pressure filtration to occur which is small molecules such as (glucose, aminon acids and oxygen) and water being forced out of the blood which makes tissue fluid. Water moves back into the blood by osmosis from high water potential in tissue fluid and low in blood plasma as large plasma proteins remain in the blood

Question 2

Where does excess tissue fluid that is not reabsorbed into the blood go?

Answer 2

Through the lymphatic vessel ad tissue fluid is now calles lymph

Question 2

Where does the hepatic vein and artery go?

Answer 2

• From liver to vena cave
  -From the aorta to the liver

Question 3

Where does the Hepatic portal vein go?

Answer 3

• From intestine to liver

Question 4

Where does the Renal artery and vein go?

Answer 4

• From the heart to the kidney
• From the kidney to the heart