Self-test questions: Chapter 31

. Which of the following statements regarding tissue fluid exchange are true?

Solute exchange between the capillaries and tissues occurs mainly by diffusion.

The plasma proteins play an important role in tissue fluid exchange.

Capillary pressure depends mainly on venous pressure.

All of the fluid that passes from the capillaries to the tissues is returned to the blood via the lymphatic circulation.

The lymph has the same ionic composition as the plasma but has a higher oncotic pressure.

. Which of the following statements is true

The lymph and cerebrospinal fluid are formed in the same way.

The lymph formed in the tissues has a similar composition to plasma

Vasomotion aids fluid uptake from the interstitial space.

The production of lymph is increased when venous pressure is raised.

Oedema is caused by excessive fluid resorption from the tissues

. The movement of fluid into the tissues is favoured during lymphatic obstruction

True

False

. The plasma oncotic pressure is a major factor in the exchange of fluid between the capillaries and the tissues

True

False

. Afferent and efferent lymph have a similar composition

True

False

. The flow of lymph is driven by contraction of the smooth muscle in the walls of the large lymphatics.

True

False

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