Which of the following statements concerning vitamin D is false?

A. Vitamin D is necessary for the formation of bones and teeth.
B. Vitamin D causes the kidney to excrete calcium.
C. Vitamin D is important for calcium homeostasis.
D. Vitamin D is necessary for the uptake of calcium from the intestine.
E. Vitamin D begins its synthesis in the skin when the skin is exposed to ultraviolet light.


B

Anatomy & Physiology

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What are the three important functions of the lipid bilayer of the plasma membrane?

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Which of these descriptions best matches the term gastrin?

A) where pancreatic juice and bile enter duodenum B) carries absorbed sugars and amino acids C) stimulates pancreas to secrete bicarbonate-rich fluid D) causes gall bladder to contract E) stimulates gastric secretion

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Which of the following would not present an foreign antigen within MHC-2 glycoproteins?

a. macrophage b. liver cell c. dendritic cell d. B cell e. Neither b nor d

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Which of the following muscles has an insertion on the mandible?

A. Platysma B. Masseter C. Temporalis D. All of these muscles insert on the mandible.

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