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Worksheets12. Capillaries and Fluid Exchange
Total questions: 12
Worksheet time: 7mins
Why are the walls of capillaries very thin?
to facilitate diffusion of gasses
to facilitate diffusion of nutrient
to facilitate diffusion of blood
to facilitate diffusion of wastes
midway along the capillary, _______ diffuse out of the capillary, and _______ diffuse into the capillary
oxygen and nutrients; red blood cells and plasma proteins
oxygen and nutrients; carbon dioxide and wastes
carbon dioxide and wastes; oxygen and nutrients
red blood cells and plasma proteins; carbon dioxide and wastes;
Blood that enters a capillary at the arterial end is rich in
carbon dioxide
oxygen
nutrient
water
The net osmotic pressure is equal at both the arterial and the venous ends of the capillary
True
False
The fluids reenter the capillaries at the venous end because the...
net filtration pressure of the blood is higher at the arterial end than it is at the venous end
net filtration pressure of the blood is higher at the venous end than it is at the arterial end.
net filtration pressure of the interstitial fluid is higher at the arterial end than it is at the venous end
net filtration pressure of the interstitial fluid is higher at the venous end than it is at the arterial end
The fluids leave the capillaries at the arterial end because the...
net filtration pressure of the blood is higher at the arterial end than it is at the venous end
net filtration pressure of the blood is higher at the venous end than it is at the arterial end
net filtration pressure of the interstitial fluid is higher at the arterial end than it is at the venous end
net filtration pressure of the interstitial fluid is higher at the venous end than it is at the arterial end
Substances that leaves the body's cell pass through __________ before entering a capillary
Artery
Veins
Interstitial fluid
Lymphatic fluid
Which end of a capillary has the greatest hydrostatic pressure?
Arterial end
Venous end
It is equal throughout
What causes blood plasma to become tissue fluid?
Hydrostatic pressure forces it out of the arterial end of the capillary
Hydrostatic pressure forces it out of the venous end of the capillary
High water potential in the capillary relative to tissues causes osmosis
High osmolarity in the capillary relative to the tissues causes diffusion
At which end of the capillary is tissue fluid reabsorbed?
Arterial end
Venous end
What causes the reabsorption of tissue fluid?
Low osmotic pressure in the tissues combined with low hydrostatic pressure in the capillary
Low osmotic pressure in the tissues combined with high hydrostatic pressure in the capillaries
High osmotic pressure in the tissues combined with high hydrostatic pressure in the capillary
High osmotic pressure in the tissues combined with low hydrostatic pressure in the capillary
What happens to tissue fluid that is not reabsorbed?
It stays in the tissues and causes swelling
It is eventually reabsorbed by the capillary
It is absorbed by lymph vessels and returned to the blood via the vena cava
It is absorbed by lacteals in the ileum
