Which would NOT be caused by a decrease in plasma Ca2+ levels in an otherwise normal person?
A. An increase in bone density
B. A decrease in the filtered load of Ca2+
C. An increase in plasma 1,25-dihydroxyvitamin D3 levels
D. An increase in plasma parathyroid hormone levels
E. An increase in nerve and muscle excitability
Answer: A
You might also like to view...
Describe the influence of rising parathyroid hormone (PTH) levels on bone, the small intestine, and the kidneys
What will be an ideal response
What is the storage form of glucose?
a. glycogen b. adipose tissue c. lipids d. inclusion e. insulin
What cell type does number 3 indicate?
A. Ependymal cell B. Astrocyte C. Neurolemmocyte D. Satellite cell E. Microglial cell
Define transverse tubules
A) Transverse tubules forms a tubular network around each individual myofibril and is similar to the smooth endoplasmic reticulum of other cells. B) Transverse tubules are composed primarily of actin filaments. C) Transverse tubules are composed primarily of myosin filaments. D) Transverse tubules are tubular extensions of the sarcolemma that extend deep into the sarcoplasm contacting the terminal cisternae of the sarcoplasmic reticulum. E) Transverse tubules are tubular proteins that bind calcium within the sarcomeres.