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sublussazione pollice - Cerca con Google

sublussazione pollice - Cerca con Google

Espermatozoide humano junto a un óvulo visto con microscopio SEM. Imagen de David Phillips (National Geographic; Visuals Unlimited)

Espermatozoide humano junto a un óvulo visto con microscopio SEM. Imagen de David Phillips (National Geographic; Visuals Unlimited)

Human embryo in the eye of a needle.

Human embryo in the eye of a needle.

microscopic lungs

microscopic lungs

Nerves (SEM)

Nerves (SEM)

scanning electron microscope picture of a nerve ending.

A scanning electron microscope picture of a nerve ending.

scanning electron microscope picture of a nerve ending.

arteries of the brain | Flickr - Photo Sharing!

arteries of the brain | Flickr - Photo Sharing!

Cross-section of the myelin sheath surrounding the axon of a peripheral nerve. Myelin is formed by Schwann cells and serves to insulate the axon electrically and to increase the rate of transmission of a nervous impulse. TEM X120,000

Cross-section of the myelin sheath surrounding the axon of a peripheral nerve. Myelin is formed by Schwann cells and serves to insulate the axon electrically and to increase the rate of transmission of a nervous impulse. TEM X120,000

Neuromuscular junction. The nerve (in white) transmits its signal to the skeletal muscle (grey tubes) to generate contraction.

Neuromuscular junction. The nerve (in white) transmits its signal to the skeletal muscle (grey tubes) to generate contraction.

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