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Did you know?

There are more sensory neurons in the tongue than in any other part of the body.

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Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.

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Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).

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Liver spots have nothing whatsoever to do with the liver. They are a type of freckles commonly seen in older adults who have been out in the sun without sufficient sunscreen.

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All patients with hyperparathyroidism will develop osteoporosis. The parathyroid glands maintain blood calcium within the normal range. All patients with this disease will continue to lose calcium from their bones every day, and there is no way to prevent the development of osteoporosis as a result.

The tiny male of the Golden orb weaver (Nephila clavipes) The tiny male of the Golden orb weaver (Nephila clavipes)
The male pelvis. The male pelvis.
The neural pathway responsible for the production and learning of song in the male canary. The neural pathway responsible for the production and learning of song in the male canary.
Hormonal control over male and female reproductive hormones Hormonal control over male and female reproductive hormones
Days 18–23 Bumps of mesoderm (somites) form. They will develop into the dermis and most of the ... Days 18–23 Bumps of mesoderm (somites) form. They will develop into the dermis and most of the ...
Video: Mutations and translation

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