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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.

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Aspirin may benefit 11 different cancers, including those of the colon, pancreas, lungs, prostate, breasts, and leukemia.

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Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.

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Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.

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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.

Types of movement across a biological membrane. Types of movement across a biological membrane.
A study by Seehausen and van Alphen involving the effects of male coloration on female choice in Afr A study by Seehausen and van Alphen involving the effects of male coloration on female choice in Afr
The types of skeletal movement. (A) Flexion and extension of left forearm. (B) Flexion and extension ... The types of skeletal movement. (A) Flexion and extension of left forearm. (B) Flexion and extension ...
Self-massage of the forearm helps reduce the effects of stress on muscles used for massage. Self-massage of the forearm helps reduce the effects of stress on muscles used for massage.
Shake the calf muscles. Pick up the calf muscles with one hand, and shake them back and forth. Shake the calf muscles. Pick up the calf muscles with one hand, and shake them back and forth.
Peristalsis Muscles around the organs of the GI tract constrict Peristalsis Muscles around the organs of the GI tract constrict
Video: Helper T cell receptors, activation, proliferation, differentiation & action

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