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Did you know?

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

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ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.

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Your heart beats over 36 million times a year.

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In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.

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The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.

Two main types of nerve cells. Two main types of nerve cells.
Nerve Cell Nerve Cell
Optic nerve, optic chiasm, ¬thalamus, and visual cortex. Optic nerve, optic chiasm, ¬thalamus, and visual cortex.
Cascade of regulated splicing that controls sex determination in Drosophila embr Cascade of regulated splicing that controls sex determination in Drosophila embr
Testing sensory function of the trigeminal nerve Testing sensory function of the trigeminal nerve
Testing motor function of cranial nerve VII - Close both eyes Testing motor function of cranial nerve VII - Close both eyes
Video: Mechanisms of capillary exchange

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