1. Which of the following is a good example of homeostasis? A. Your plasma calcium concentration...

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Medical Sciences

1. Which of the following is a good example of homeostasis?
A. Your plasma calcium concentration is 4.5mM.
B. Your plasma K+ concentration has been around 4 mM for manyyears.
C. You have a temperature of 103Ã‚Â°F/38Ã‚Â°C.
D. You are dehydrated because of sweating heavily in a hotday.
2. If your plasma sodium concentration is 141 mM, which of thefollowing mechanisms is more likely to re-establish yourelectrolyte homeostasis?
A. A positive feedback loop, because they produced rapidresponses capable of exerting strong all-out responses that willbring your plasma sodium back to around 10 mM.
B. A negative feedback loop, because they are good to minimizechange.
C. A negative feedback loop that triggers thirst, so thatabsorbed water can dilute excessive sodium
D. No need to worry; 141 mM Na+ in plasma is within normalrange, so your homeostasis is not being compromised.

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4.4 Ratings (954 Votes)

Question no 1 Option a is wrong as in a homeostasis mechanism the normal value of an electrolyte in our blood has to be maintained This is wrong because blood calcium normal value is22 27 mmolL and in this case it is an example with hypercalcemia with 45mm So in this See Answer

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		A. Your plasma calcium concentration is 4.5mM.
		B. Your plasma K+ concentration has been around 4 mM for manyyears.
		C. You have a temperature of 103Ã‚Â°F/38Ã‚Â°C.
		D. You are dehydrated because of sweating heavily in a hotday.

		2. If your plasma sodium concentration is 141 mM, which of thefollowing mechanisms is more likely to re-establish yourelectrolyte homeostasis?
		A. A positive feedback loop, because they produced rapidresponses capable of exerting strong all-out responses that willbring your plasma sodium back to around 10 mM.
		B. A negative feedback loop, because they are good to minimizechange.
		C. A negative feedback loop that triggers thirst, so thatabsorbed water can dilute excessive sodium
		D. No need to worry; 141 mM Na+ in plasma is within normalrange, so your homeostasis is not being compromised.