Epinephrine (adrenaline, the chemical secreted when you get a surge of excitemen

Question

Epinephrine (adrenaline, the chemical secreted when you get a surge of excitement nervousness for example) binds adrenergic receptors. If Epinephrine binds the alpha adrenergic receptor blood vessels constrict. If epinephrine binds a beta-2 adrenergic receptor, blood vessels dilate. What determined the cellular response: epinephrine or the adrenergic receptor? a. Epinephrine b. Adrenergic receptor. Match the following list of words with the descriptions below: sensor, effector, integrating center, set point: a. The response that brings the set point back into range b. Compares the regulated variable to the set point and initiates the appropriate response c. The desired value of the regulated variable d. Sensitive to changes in the body's environment, sending signals to the integrating center Below is a figure demonstrating the homeostatic regulation of temperature. a. What is the homeostatically regulated variable? b. What does the sensor need to do in this scenario? (choose all that apply) a. 98.6 F b. decrease heat loss c. monitor loss of heat d. produce shivering e. body temperature f. increase heat production g. monitor internal temperature

Explanation / Answer

Ans-13 (b) Adrenergic recptor

cellular response is determined by specific receptor. When epinephrine binds to alpha or beta receptor, binding of epinephrine to either of the receptor will stimulate a particular cellular response.

Ans-14

a----integrating center

b----effector

c----set point

d-----sensor

Ans-15

a--- body temperature i.e. 98.60F

b---monitor internal body temperature and monitor loss of heat

c---decrease heat loss, produce shivering and increase body temperature

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