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Did you know?

Blood is approximately twice as thick as water because of the cells and other components found in it.

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According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.

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Complications of influenza include: bacterial pneumonia, ear and sinus infections, dehydration, and worsening of chronic conditions such as asthma, congestive heart failure, or diabetes.

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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

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For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

Areas of Referred Pain, Posterior View Areas of Referred Pain, Posterior View
Muscle strength and size. Muscle strength and size.
The Three Components of Pain The Three Components of Pain
Various sites of referred pain. Various sites of referred pain.
These findings are from Colby and Kohlberg's long-term longitudinal study These findings are from Colby and Kohlberg's long-term longitudinal study
A cross section of muscle showing the molecular organization within the muscle fiber. In normal musc A cross section of muscle showing the molecular organization within the muscle fiber. In normal musc
Video: Membrane Protein and Facilitated Transport (Passive Vs Active)

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