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Did you know?

The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.

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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.

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A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.

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Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.

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It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.

Sensory receptors. Sensory receptors.
The energy input and output of glycolysis. The energy input and output of glycolysis.
Types of Neurons Types of Neurons
The cascade of events by which the stroke-induced release of glutamate kills neurons. The cascade of events by which the stroke-induced release of glutamate kills neurons.
The discovery of the retinohypothalamic tracts. Neurons from each retina project to both ... The discovery of the retinohypothalamic tracts. Neurons from each retina project to both ...
Sensory Differences Between Species Sensory Differences Between Species
Video: Neural regulation of mechanical digestion- CNS voluntary, ANS & ENS controlled involuntary movements

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