Skeletal System Structure, Mineral Homeostasis (3B)
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QUESTION
What is the endosteum and where is it located?
QUESTION
What are lacunae in bone tissue?
QUESTION
Which option best describes the net effect of PTH on serum
Ca
2
+
\text{Ca}^{2+}
Ca
2
+
?
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ANSWER
Increases serum
Ca
2
+
\text{Ca}^{2+}
Ca
2
+
. PTH elevates blood calcium by promoting bone resorption, renal reabsorption, and vitamin D activation.
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