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Author Question: Describe two ways the skin can help retain heat when it is cold outside. What will be an ideal ... (Read 112 times)

codyclark

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on: Jul 3, 2018
Describe two ways the skin can help retain heat when it is cold outside.
 
  What will be an ideal response?

Question 2

Furosemide works by:
 
  a. Increasing cardiac contractility
  b. Reducing arterial blood pressure through alpha1 blockade
  c. Stimulating beta receptors and increasing cardiac conduction velocity
  d. Inhibiting the reuptake of sodium and chloride resulting in diuresis


Tabitha_2016

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Reply #1 on: Jul 3, 2018
Answer to Question 1

Goosebumps (hairs that are raised by contraction of the arrector pili muscles) create an insulating space between the air and the skin. Constricting blood vessels in the dermis divert blood away from the body surface so that the air will not cool it.

Answer to Question 2

d
Rationale: a. Furosemide does not have an effect on contractility, but does reduce preload.
b. Furosemide relaxes the venous system, but not arterial.
c. Furosemide has no effect on beta receptors.
d. Correct.


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