Describe how oxygen and carbon dioxide are transported in the blood
What will be an ideal response?
Oxygen is transported in two ways:
1. Most oxygen attaches to hemoglobin molecules on the RBCs to form oxyhemoglobin.
2. A small amount of oxygen dissolves in the plasma for transport.
Carbon dioxide is also transported in two ways:
1. Most carbon dioxide is transported in the plasma as the bicarbonate ion.
2. A small amount of carbon dioxide is carried inside the RBCs bound to hemoglobin (bound to a different site from oxygen).
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Muscle atrophy that progresses with aging is caused by reduction in
A) myoglobin. B) all of the above. C) ATP. D) the sizes of muscle fibers.
The pores of the endothelial cells of the glomerular capillaries are called ________.
A. membrane channels B. filtration slits C. gap junctions D. macula densa E. fenestrae
Which imbalance results when systemic arterial blood HCO3- levels drop significantly (below 22 mEq/liter)?
a) Metabolic alkalosis b) Metabolic acidosis c) Respiratory acidosis d) Respiratory alkalosis e) None of these choices
During inflammation fluids will passively diffuse out of blood vessels into the nearby, infected tissues. This implies all of the following except ________
A) B-lymphocytes will differentiate to become plasma cells B) the surrounding tissue will swell with excessive fluids C) the osmolarity of the fluids surrounding infected tissue is higher than the plasma D) nearby capillaries have become more permeable