What causes a graded potential to degrade?
What will be an ideal response?
Current leakage across the membrane and resistance of the cytoplasm are two factors.
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Which statement best describes the importance of the biconcave shape of erythrocytes?
A) It conforms to the molecular shape of hemoglobin. B) It allows for the movement of erythrocytes out of the capillaries. C) It makes the erythrocyte small and flexible. D) It provides a large surface area for the exchange of gases. E) It allows for phagocytosis of foreign particles.
Equalization of intrapleural and intrapulmonary pressures and collapse of alveoli and small bronchioles is seen in
A. emphysema. B. asthma. C. pulmonary edema. D. pneumothorax.
Trace the pathway of blood through the kidneys, from renal artery to renal vein
What will be an ideal response?
The fine tuning of water recovery or disposal occurs in ________.
a)the proximal convoluted tubule b)the collecting ducts c)the ascending loop of Henle d)the distal convoluted tubule