Describing a physiological variable as "homeostatic" means that it
A. has varied from the normal value, and will remain constant at the new value.
B. never varies from an exact set point value.
C. is in an equilibrium state that requires no energy input to stay at the normal value.
D. is in a state of dynamic constancy that is regulated to remain near a stable set point value.
E. has no normal range, but will just change to match the outside environmental conditions.
D
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a. True b. False Indicate whether the statement is true or false
Where on an enzyme does the substrate bind?
A. The active site B. The allosteric site C. The enzymatic site D. The inhibition site
Which of the following supplies blood to the urinary bladder?
A. Superior gluteal artery B. Obturator artery C. Superior vesical artery D. Middle rectal artery
What formed element in the blood is flattened and circular, lacks a nucleus, mitochondria, and ribosomes, and is red in color because of the presence of hemoglobin?
A) platelet B) erythrocyte C) lymphocyte D) basophil E) eosinophil