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Did you know?

Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.

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During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.

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Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.

Did you know?

Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).

Shape of the thymus gland. Shape of the thymus gland.
Signal Endocrine Nerve Signal Endocrine Nerve
Venn Diagram of Nervous System and Endocrine System Venn Diagram of Nervous System and Endocrine System
Hormonal control of adrenal gland. CRH = corticotropin releasing hormone; ACTH = adrenocorticotropic ... Hormonal control of adrenal gland. CRH = corticotropin releasing hormone; ACTH = adrenocorticotropic ...
Examples of endocrine disorders. (A) A patient with exophthalmos, a symptom of hyperthyroidism ... Examples of endocrine disorders. (A) A patient with exophthalmos, a symptom of hyperthyroidism ...
Your Body Digests, Absorbs, and Synthesizes Protein Your Body Digests, Absorbs, and Synthesizes Protein
Video: Evolutionary tree of life Animation

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