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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

Did you know?

Hip fractures are the most serious consequences of osteoporosis. The incidence of hip fractures increases with each decade among patients in their 60s to patients in their 90s for both women and men of all populations. Men and women older than 80 years of age show the highest incidence of hip fractures.

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Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.

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Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.

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A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.

skin of a spider skin of a spider
Receptive Fields of Color-Sensitive Ganglion Cells Receptive Fields of Color-Sensitive Ganglion Cells
Calipers are used to measure the body fat on the triceps of a patient. Calipers are used to measure the body fat on the triceps of a patient.
Classification of Skin Disorders Classification of Skin Disorders
(A) Major leukocytes. (B) Enhanced color photograph from a scanning electron microscope of a ... (A) Major leukocytes. (B) Enhanced color photograph from a scanning electron microscope of a ...
Variable expression of yellow phenotype in mice caused by diet-related epigenetic changes in the gen Variable expression of yellow phenotype in mice caused by diet-related epigenetic changes in the gen
Video: Introduction to Heart Attacks

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