The pumping action of the heart creates hydrostatic pressure in the blood. The table shows the hydrostatic pressure in a blood capillary. About $$$90 \%$$$ of the tissue fluid which surrounds a capillary is returned to the blood at the venule end. How is this achieved?

The capillary wall is more permeable at the arteriole end than the venule end.

The hydrostatic pressure in tissue fluid is higher than in blood.

There is a higher concentration of dissolved solutes in tissue fluid than in blood.

There is osmotic movement of water from the tissue fluid into the blood.

Biology

IGCSE&ALevel

CAIE

Exam No：9700_w24_qp_11 Year：2024 Question No：33

Answer:

Knowledge points:

8.3.1 describe the external and internal structure of the mammalian heart

8.3.2.1 atria and ventricles

8.3.2.2 left ventricle and right ventricle

8.3.3 describe the cardiac cycle, with reference to the relationship between blood pressure changes during systole and diastole and the opening and closing of valves

8.3.4 explain the roles of the sinoatrial node, the atrioventricular node and the Purkyne tissue in the cardiac cycle (knowledge of nervous and hormonal control is not expected)

The pumping action of the heart creates hydrostatic pressure in the blood. The table shows the hydrostatic pressure in a blood capillary. About $$\(90 \%\)$$ of the tissue fluid which surrounds a capillary is returned to the blood at the venule end. How is this achieved?

Answer:

Knowledge points:

Solution:

The pumping action of the heart creates hydrostatic pressure in the blood. The table shows the hydrostatic pressure in a blood capillary. About $$\(90 \%\)$$ of the tissue fluid which surrounds a capillary is returned to the blood at the venule end. How is this achieved?

Answer:

Knowledge points:

Solution:

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