During ventricular contraction, the semilunar valves close in order to permit the blood to enter the large arterial trunks that carry blood away from the heart
Indicate whether this statement is true or false.
FALSE
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If pure water and a solution containing a nonpenetrating solute are separated by a membrane that is permeable only to water, what would occur?
A. Water will diffuse by osmosis until all of the water is on the same side as the solute. B. No movement will occur between the compartments. C. Water will diffuse by osmosis toward the side with the solute, until stopped by opposing hydrostatic pressure. D. Water will diffuse by osmosis away from the side with the solute, until stopped by hydrostatic pressure. E. Water will diffuse by osmosis until the water concentrations in the two compartments become equal.
Which of the following factors does not contribute to venous blood return?
What will be an ideal response?
What is the functional role of the T tubules?
A) synthesize ATP to provide energy for muscle contraction B) enhance cellular communication during muscle contraction C) stabilize the G and F actin D) hold cross bridges in place in a resting muscle
Changes in the osmolarity of the extracellular fluid are detected by osmoreceptors in the hypothalamus
Indicate whether the statement is true or false