If your doctor notices a marked decrease in calcium ion levels in your blood, what gland might he suspect is not functioning properly and why?
What will be an ideal response?
The parathyroid gland normally responds to low calcium ion levels in the blood and releases PTH, which mobilizes osteoclasts to step up bone destruction, releasing more calcium into the bloodstream. If the parathyroid is not functioning properly it may release too much PTH or not respond at all, which seems to be the case here.
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Where in the figure will you find mature sperm?
a) H b) G c) A d) B e) D
A sudden rise in blood pressure in the carotid artery would
A) initiate the baroreceptor reflex. B) cause a reduction in heart rate and force of contraction. C) produce a reflex coordinated by the cardiac center in the medulla oblongata. D) All of the answers are correct. E) None of the answers are correct.
The trachea is approximately 10 in. (25.4 cm.) long.
Answer the following statement true (T) or false (F)
The hepatic ______________ system is a venous network that drains the GI tract and delivers blood to the liver
Fill in the blank with correct word.