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The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.

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The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.

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It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.

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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

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Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.

Purpura, hemorrhaging into the skin due to fragile blood vessels. Purpura, hemorrhaging into the skin due to fragile blood vessels.
Formed Elements of Blood Formed Elements of Blood
Hormonal and nervous factors influencing blood pressure Hormonal and nervous factors influencing blood pressure
Medicinal leeches on a patient’s neck. Today leeches are sometimes used in microsurgery to prevent b Medicinal leeches on a patient’s neck. Today leeches are sometimes used in microsurgery to prevent b
Formation of Blood Cells Formation of Blood Cells
Red Blood Cells Red Blood Cells
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