Vitamin D3 is not itself biologically active, but it is converted by enzymes in the liver and kidney to 1α,25-dihydroxyvitamin D3 (calcitriol), a hormone that regulates __________ uptake in the intestine and calcium levels in kidney and bone.
举一反三
- In mammals, gluconeogenesis in the liver, kidney, and small intestine provides glucose for use by the ______, _______, and erythrocytes.
- Senile debilitating lesions are mainly in the five internal organs, especially the two internal organs ( ) A: Spleen and kidney B: Liver and heart C: Spleen and liver D: Lung and stomach E: Kidney and liver
- Patients with kidney stones should not take vitamin C or vitamin D.
- Which group can be generalized by the relationship of reverse restriciton? A: disorder of spleen involving kidney B: disorder of liver involviing spleen C: disorder of liver involving lung D: disorder of heart involving kidney
- The hair depend upon the nourishment of( ). A: liver<br/>qi B: lung<br/>qi kidney essence C: kidney essence D: food E: body fluid