The familiar sounds of your heart are made by the heart's valves as they open and close.
Did you know?
There are more sensory neurons in the tongue than in any other part of the body.
Did you know?
There are more bacteria in your mouth than there are people in the world.
Did you know?
Never take aspirin without food because it is likely to irritate your stomach. Never give aspirin to children under age 12. Overdoses of aspirin have the potential to cause deafness.
Did you know?
The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
A newborn kitten
Animals Bullying
Selected Vitamins: Food Sources, Functions, and Deficiency and Toxicity Symptoms
A patient with goiter due to iodine deficiency.
Goiter
Selected Narrow Sense Heritability (h2) Values for Animals and Plants