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Did you know?

Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.

Did you know?

The top 10 most important tips that will help you grow old gracefully include (1) quit smoking, (2) keep your weight down, (3) take supplements, (4) skip a meal each day or fast 1 day per week, (5) get a pet, (6) get medical help for chronic pain, (7) walk regularly, (8) reduce arguments, (9) put live plants in your living space, and (10) do some weight training.

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Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.

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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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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.

Sexual dimorphism in body size and mating system. Sexual dimorphism in body size and mating system.
Female Sexual Behavior Female Sexual Behavior
This painting depicts New Orleans in 1803, when the city was acquired—along with much of the modern This painting depicts New Orleans in 1803, when the city was acquired—along with much of the modern
Forms of Sexual Misconduct Cont Forms of Sexual Misconduct Cont
Sexual Scripts in the Media Sexual Scripts in the Media
Sexual Selection: Birds of Paradise Sexual Selection: Birds of Paradise
Video: Allergic Rhinitis

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