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Did you know?

Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.

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Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.

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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

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Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.

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When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

Strawberry Image From a Scanning Electron Microscope Strawberry Image From a Scanning Electron Microscope
Retrograde pyelogram. A contrast medium is injected into the ureter using a cystoscope, and the X-ra Retrograde pyelogram. A contrast medium is injected into the ureter using a cystoscope, and the X-ra
Midsagittal image of the head on an MRI scan Midsagittal image of the head on an MRI scan
Image Image
Antibodies in myasthenia gravis block the acetylcholine receptors at the neuromuscular junction Antibodies in myasthenia gravis block the acetylcholine receptors at the neuromuscular junction
Group that may block N-terminus and C-terminus Group that may block N-terminus and C-terminus
Video: Burn Animation

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