More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
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Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.
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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
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The eye muscles are the most active muscles in the whole body. The external muscles that move the eyes are the strongest muscles in the human body for the job they have to do. They are 100 times more powerful than they need to be.
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The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.
Summation of Heart Sounds, Normal S1
Human Heart Model
HEART
Anatomical positions of the heart
External anatomy of the heart
Venous return to the heart and blood flow to the lungs.