Calcium homeostasis involves
A)immediate adjustments required to maintain a constant free Ca₂₊ concentration on a minute-to-minute basis
B)slowly responding adjustments required to maintain a constant total amount of Ca₂₊ in the body
C)actions of parathyroid hormone
D)both a and c
E)both b and c

Question

Quizplus · Accepted Answer

Calcium homeostasis involves immediate adjustments required to maintain a constant free Ca₂₊ concentration on a minute-to-minute basis, and these adjustments are mediated by parathyroid hormone. Therefore, choice D is the best option because it includes both options A and C. Option B is incorrect because it refers to slowly responding adjustments that are not typically associated with calcium homeostasis.

Calcium Homeostasis Involves