What is the role of vitamin D in bone development?Multiple ChoiceVitamin D decreases calcium absorption from the small intestine and thus breaks down bone matrix.Vitamin D increases osteoclastic activity and thus breaks down bone matrix.Vitamin D increases calcium absorption from the small intestine which is used to build bone matrix.

Which of the following are functions of vitamin D in the body? Check all that apply.Check All That ApplyMaintenance of epithelial tissuesMaintenance of epithelial tissuesAbsorption of calcium and phosphorusAbsorption of calcium and phosphorusMaintenance of normal blood calciumMaintenance of normal blood calciumSynthesis of red blood cellsSynthesis of red blood cellsProduction and maintenance of healthy bonesProduction and maintenance of healthy bones

Fill in the Blank QuestionFill in the blank question.Vitamin is necessary for the proper absorption of calcium by the body and thus is vital for proper bone formation.

The kidneys play a role in the synthesis of vitamin D, which means they will alsoMultiple Choiceaid in the production of antibodies to help fight infections.help regulate the development and growth of bone cells.play a role in the homeostasis of calcium.play a role in the synthesis of vitamin C and E, as well.

Effector: Synergistically, PTH and calcitriol (vitamin D) increase low blood calcium levels. Osteoclast activity is stimulated by PTH, which promotes bone release and resorption of calcium into the blood (Khan et al., 2022). Furthermore, PTH stimulates the kidneys to convert vitamin D from inactive to active form, calcitriol. This will encourage calcium absorption in the small intestine, increasing blood calcium levels. Together, these mechanisms elevate calcium levels in the blood and restore calcium homeostasis. Increased calcium levels in the serum act as a negative feedback loop, signalling the parathyroid glands to stop the release of PTH is this statement correct?

True or False: Each of these factors are important for bone growth. Thyroid hormone Estrogen Vitamin E Testosterone Vitamin C Vitamin D Parathyroid hormone Vitamin A Growth hormone