Nitroglycerine is a medication taken by people who experience chest pain known as angina. One of the major side effects of the medication is that the patient will notice a severe headache. What causes this side effect?
What will be an ideal response?
Nitroglycerine is a vasodilator that is non-specific (the nitric oxide content causes all blood vessels it contacts to dilate). When it is ingested it will cause dilation of the coronary arteries, reliving the chest pain and preventing myocardial infarction, but it will also cause dilation of cerebral blood vessels, causing a headache.
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In general, a large rough projection is called a(n) ________.
Fill in the blank(s) with the appropriate word(s).
Which skull bone articulates with the first vertebra?
a. temporal b. occipital c. sphenoid d. ethmoid
The compression (weight-bearing) strength of bone matrix is due to the presence of
A. hydroxyapatite crystals. B. collagenase. C. collagen fibers. D. elastin fibers. E. bone marrow.