Author Question: An 8-year-old boy has fallen through the ice while skating on a frozen pond. By the time paramedics ... (Read 61 times)

haleyc112 · **on:** Jun 25, 2018

An 8-year-old boy has fallen through the ice while skating on a frozen pond. By the time paramedics arrive, the boy has been removed from the water by his friends, but his core body temperature is 31.1 C (88.0 F).

The responders would recognize that which of the following physiological processes would have been active during the boy's accident?
A)
Production and release of cortisol as a heat generation process
B)
Stimulation of the thyroid gland in order to increase cellular activity
C)
Heat production through increased body metabolism
D)
Energy generation through the release of epinephrine and norepinephrine

Question 2

Which of the following types of pneumonia listed below is best characterized by an infective agent that produces sputum samples with a peptidoglycan cell wall,

expresses endotoxins, replicates readily in broth and on agar, grows in clusters, has pili, and does not stain when exposed to crystal violet?A)
Chlamydial
B)
Viral
C)
Mycoplasmal
D)
Bacterial

kxciann · **Reply #1 on:** Jun 25, 2018

Answer to Question 1

Ans:
C

Feedback:

An immediate response to low temperature is a heat-generating increase in metabolism. Cortisol is not involved in heat generation, and the thyroid is only capable of a longer-term effect on metabolic activity. Epinephrine and norepinephrine shift activity away from energy production and toward heat production.

Answer to Question 2

Ans:
D

Feedback:

Although chlamydiae, viruses, and mycoplasmas all can cause pneumonia, only bacteria have all of these characteristics. Chlamydiae and viruses are obligate intracellular organisms and therefore would grow only in cell culture, and mycoplasmas lack the peptidoglycan cell wall typical of bacteria.