What is the main stimulus for secretion of the hormone aldosterone from the adre
ID: 270097 • Letter: W
Question
What is the main stimulus for secretion of the hormone aldosterone from the adrenal cortex? O angiotensin II angiotensin I Orenin hydrogen ions QUESTION 15 What percentage of the total body weight in humans does blood represent? ? 896 0 496 O 12% O 16% QUESTION 16 What does the heart use as its primary fuel source? O fatty acids O glucose O amino acids O lactate QUESTION 17 What is the respiratory quotient RO? O The ratio of CO2 produced to 02 consumed O The ratio of CO2 produced to ATP consumed The ratio of 02 produced to CO2 consumed O The ratio of O2 produced to ATP consumedExplanation / Answer
14) What is the main stimulus for secretion ofthe hommone aldosterone from the adrenal cortex
ANSWER IS: angiotensin II
EXPLANATION:
Secretion ofthe hommone aldosterone from the adrenal cortex is regulated by the renin-angiotensin system. Renin is produced from kidneys when variations in blood pressure and volume and plasma sodium and potassium levels. It acts on a angiotensinogen circulating in the plasma that cleave this into angiotensin I. Angiotensin I is then converted to angiotensin II that stimulates the release of aldosterone from the adrenal glands.
15) What percentage of the total body weight in humans does blood represent?
ANSWER IS: 8%
EXPLANATION:
Blood accounts for roughly 7 to 8 % of a person's body weight. The average amount of blood in body is an estimate as it can depends on how much of the weigh, sex, and your place of living.
16) What does the heart use as its primary fuel source?
ANSWER IS: fatty acids
EXPLANATION:
Heart use fatty acids as its primary fuel source, although ketone bodies as well as lactate can also serve as fuel for heart.
17) What is the respiratory quotient RQ)?
ANSWER IS:
The ratio of CO2 produced to O2 consumed
EXPLANATION:
The respiratory quotient is defined as the ratio of the volume of carbon dioxide produced by an organism to the volume of oxygen consumed...
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