Patient X has a tumor of the parathyroid glands that causes a hypersecretion of PTH from these glands. Predict the effect this hypersecretion would have on the skeletal system and on the secretion of calcitonin from the thyroid gland
What will be an ideal response
High levels of PTH would cause high levels of osteoclast activity, thus removing calcium from bones. Bones would become weak and soft. Excess phosphate would be lost from the kidneys. High levels of calcium ions in blood may disrupt nerve and muscle function. Calcitonin levels would probably be high, trying to restore homeostasis by increasing deposition of calcium into bone.
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During exercise, blood flow to skeletal muscles increases. The initial response that increases blood flow is automatic and independent of the nervous and endocrine systems. Which type of homeostatic regulation is this? Why?
ATP expenditure is required for both contraction and relaxation of a muscle fiber
Indicate whether the statement is true or false
Pancreatic amylase serves its function when it is located in the
A. liver. B. mouth. C. stomach. D. blood. E. small intestine.
After an evening drinking alcohol with friends, Sonja noticed a increase in urine output and woke with a dry mouth the next morning. Since alcohol inhibits antidiuretic hormone (ADH), explain how alcohol affects water reabsorption
What will be an ideal response?