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Author Question: Which of the following variation(s) control(s) blood flow to the heart? 1. Local metabolic control ... (Read 58 times)

gbarreiro

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on: Jul 16, 2018
Which of the following variation(s) control(s) blood flow to the heart? 1. Local metabolic control mechanisms 2. Local myogenic control mechanisms 3. Central neural innervation
 
  a. 1, 2, and 3
  b. 2 and 3 only
  c. 1 only
  d. 1 and 3 only

Question 2

Which of the following variations control blood flow to the brain?
 
  a. Central neural innervation
  b. Circulation of humoral agents
  c. Local metabolic control mechanisms
  d. Local myogenic control mechanisms


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nathang24

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Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: B
The vasculature of the heart shows a strong response to both myogenic and metabolic factors.

Answer to Question 2

ANS: C
Metabolic control involves the relationship between vascular smooth muscle tone and the level of local cellular metabolites. The vascular tone in the brain is the most sensitive to changes in the local metabolite levels, particularly those of CO2 and pH.


gbarreiro

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Reply 2 on: Jul 16, 2018
Gracias!

kishoreddi

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Reply 3 on: Yesterday
:D TYSM

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