The three hormonal factors that influence Ca2+ metabolism are ____________________, ____________________, and ____________________
Fill in the blank(s) with correct word
parathyroid hormone (PTH), calcitonin, vitamin D
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Each kidney contains more than a million "functional units" called ________.
Fill in the blank(s) with the appropriate word(s).
A decrease in the surface area of the respiratory membrane will cause the diffusion rate to ________.
A. decrease B. increase C. remain unchanged
During motion sickness, the brain receives conflicting signals regarding one's placement in space. Which of the following structures is least likely to be involved in motion sickness?
-semicircular canals -vestibulocochlear nerve -cochlear duct -sacule and utricle
The cell type that is responsible for maintaining bone once it has been formed is the
A. osteocyte. B. chondrocyte. C. osteoblast. D. osteoclast. E. chondroblast.