Define acclimatization and give an example
What will be an ideal response?
The term acclimatization refers to the gradual adaptations the body makes to maintain long-term homeostasis in response to a prolonged physical change in the surrounding environment, such as a change in temperature. When a person exercises in the heat without gradually adapting to the hotter environment, the body faces a terrible dilemma. To maintain body temperature in the face of this extra heat, blood flow to the skin is increased so that heat from the warmed blood can be lost through the skin to the surrounding environment. If the environmental temperature is hotter than the body temperature, heat cannot be lost from the blood.
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The proximal convoluted tubules reabsorb which percentage of filtered water?
a) 25% b) 50% c) 65% d) 80% e) 99%
The placenta releases:
a. chorionic gonadotropins b. progesterone c. estrogen d. all of the above
What is responsible for development of the resting membrane potential?
a. Leak channels b. Gated channels c. Ion pumps d. both a and b e. both a and c
As the strength of a stimulus increases, what will happen to action potentials?
a. They will be produced with increasing magnitude (size). b. They will be produced with increasing frequency. c. They will be produced with decreasing frequency