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Capillary Bed for Blood

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Blood entering a capillary bed of a vertebrate was measured for the pressures exerted by various factors

Arterial End of Capillary Bed Venous End of Capillary Bed

Hydrostatic Pressure 8 mm Hg 14 mm Hg
Osmotic pressure 26 mm Hg 26 mm Hg
PO2 100 mm Hg 42 mm Hg
PCO2 40 mm Hg 46 mm Hg

For this capillary bed, which of the following statements is correct

a) fluids will leave the capillaries on the arterial side of the bed and re-enter on the venous side

b) oxygen is taken up by the erythrocytes within the capillaries

c) the osmotic pressure remains constant due to carbon dioxide compensation

d) the hydrostatic pressure declines from the arterial side of the venous side because oxygen is lost

e) the pH is lower on the arterial side than on the venous side

The site of this capillary bed could be all of the following except the

a) pancreas

b) kidneys

c) medulla

d) alveoli

e) muscle tissue

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https://brainmass.com/biology/human-circulatory-and-respiratory-systems/capillary-bed-blood-126045

Solution Preview

There is a lot of information in these two questions that are intended to get the student lost in unnecessary data. The critical factor is the pO2 data. What does it tell us? It tells us that the partial pressure of O2 going into the capillary bed is 100 mm Hg and that the partial pressure of O2 leaving the capillary bed is only 42 mm Hg.

Therefore, let's focus on that. Oxygen is entering the capillaries and is being picked up by the ...

Solution Summary

The expert examines blood entering a capillary bed of a vertebrate measured. The arterial end of a capillary bed is determined.

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See Also This Related BrainMass Solution

Anatomy: Portal Veins, Normal Veins, Blood Flow Control

1) Describes the processes and forces involved in bulk flow at the capillaries. include an explanation of which direction water/plasma at each end of the capillary bed and why?

2) Explain the difference between portal and normal veins.

3) Explain the relationship among blood flow, blood pressure, and resistance.

Multiple choice questions:

1) which of the following has the most unique control of its blood flow?
a) lungs
b) Heart
c) Skeletal muscle
d) Skin

2) Which of the following has no role in returing blood to the heart via the veins?
a) Blood pressure
b) Muscular pump
c) Respiratory pump
d) All of the above play a sigificant role in returing blood to the heart

3) ......is the rate of blood flow per given mass of the tissue.
a) Blood flow
b) Cardiac output
c) Perfusion
d) Stroke volume

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