Internal and external respiration depends on several factors. Which of the following is NOT an important factor in gas exchange?
a) rate of blood flow through the tissue
b) the molecular weight of the gas
c) partial pressure of the gases
d) available surface area
Answer: b) the molecular weight of the gas
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X, Y, and Z are adjacent sensory receptors in the skin. During administration of the flu shot, a needle is inserted in the middle of Y's receptive field. All three receptors are activated. Which of the following is likely to be true?
A. The receptor potential in neurons X and Z will be more depolarized than in neuron Y. B. It won't be possible to discriminate which neuron's receptive field was stimulated at its center. C. The frequency of action potentials in the afferent pathway from neuron Y will be increased by excitatory interneurons projecting from the afferent pathways from neurons X and Z. D. The receptor potentials in all three neurons will achieve the same, average value. E. The frequency of action potentials in neuron Y will be greater than that in neurons X and Z.
The gallbladder is part of the gastrointestinal tract.
Answer the following statement true (T) or false (F)
Match the function with the most appropriate category.A. AgglutinationB. CoagulationC. Immune functionD. Blood GroupingE. Diagnostic Blood TestErythrocytes clumping together
Fill in the blank(s) with the appropriate word(s).
Tubular reabsorption and tubular secretion are highly selective processes, whereas glomerular filtration is not
Indicate whether the statement is true or false