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15 questions
Which of these is not a component of the blood?
Carbon dioxide
Plasma
Erythrocytes
Platelets
The substance that surrounds most cells is called:
Intracellular fluid
Plasma
Lymph
Tissue Fluid
Tissue fluid supplies respiring cells with:
Oxygen & Glucose
Carbon Dioxide & Glucose
Lactic Acid & Oxygen
Water & Carbon dioxide
In which direction does blood flow through a capillary bed?
Vein end -> Arteriole end
Venule end -> Arteriole end
Arteriole end -> Venule end
Artery end -> Venule end
Which pressure is highest at the arteriole end of the capillary bed?
Oncotic pressure
Oncostatic pressure
Hydrostatic pressure
Water potential
"The pressure that a fluid exerts when pushing against the sides of a vessel" is a definition of which key term:
Oncotic pressure
Oncostatic pressure
Hydrostatic pressure
Water potential
"This is the pressure of solutes (eg plasma proteins) drawing water in by osmosis" is a definition of which key term:
Oncotic pressure
Oncostatic pressure
Hydrostatic pressure
Water potential
At the arteriole end of the capillary, how does the hydrostatic pressure of the blood compare to the hydrostatic pressure of the tissue fluid:
It is higher
It is lower
It is the same
At the venule end of the capillary, how does the hydrostatic pressure of the blood compare to the hydrostatic pressure of the tissue fluid:
It is higher
It is lower
It is the same
How does the hydrostatic pressure of the blood at the arteriole end of the capillary compare to the hydrostatic pressure of the blood at the venule end of the capillary?
It is higher
It is lower
It is the same
How does the oncotic pressure of the blood at the arteriole end of the capillary compare to the hydrostatic pressure of the blood at the venule end of the capillary?
It is higher
It is lower
It is the same
Why is the hydrostatic pressure of the blood relatively high at the arteriole end of the capillary bed?
Because capillaries have a small lumen
Because of the pressure exerted by the contraction of the right ventricle during ventricular systole
Because of the pressure exerted by the contraction of the left ventricle during ventricular systole
Because capillaries have a high surface area
Why does the oncotic pressure of the blood remain the same throughout the capillary bed?
Because capillaries have a small lumen
Because plasma proteins are too large to leave the blood (too large to fit through the fenestrations) and enter the tissue fluid
Because of the pressure exerted by the contraction of the left ventricle during ventricular systole
Because a significant volume of fluid left the capillaries at the arteriole end of the capillary
Why is the water potential of the blood at the venule end of the capillary lower than the water potential of the blood at the arteriole end of the capillary? 2 answers
Plasma (water based/aqueous solution) left the blood at the arteriole end of the capillary
Solute concentration of the blood has remained the same throughout the capillary
Water has been produced by respiring cells
Water has moved from the tissue fluid to the blood at the venule end of the capillary bed
Excess tissue fluid drains into the:
Capillary bed
Lymphatic system
Cytoplasm
Extracellular spaces
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