What is the quickest physiological mechanism for achieving moderate heat loss?
A. Cutaneous vasodilation
B. Convection
C. Cutaneous vasoconstriction
D. Diaphoresis
E. Nonshivering thermogenesis
Answer: A
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Match the glial cell with its function.A. Influence function of blood-brain barrierB. Macrophages in CNSC. Produce cerebrospinal fluidD. Form myelin sheath around axons in CNSE. Form myelin sheath around part of the axon in the PNSSchwann cell
Fill in the blank(s) with the appropriate word(s).
The work of breathing normally requires about 3% of total energy expenditure; this increases under all of the following situations except when
a. elastic recoil decreases b. resistance increases c. the partial pressure of oxygen increases in the air d. ventilation increases e. compliance decreases
Read the two statements and use the following key to choose the best answer.A. The first item is greater than the second item.B. The first item is less than the second item.C. The first item is equal or nearly equal to the second item.(1) The rate of erythropoiesis when erythropoietin is present(2) The rate of erythropoiesis when erythropoietin is absent
Fill in the blank(s) with the appropriate word(s).
Pheromones differ from hormones in that
A. they are transmitted between members of different species. B. they are transmitted between members of the same species. C. they are only found in plants and fungi. D. they act only within an individual.