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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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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).

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Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.

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The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.

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Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.

Heart Model Heart Model
Anxiety model. Stressful events lead to symptoms of anxiety, which can be resolved by coping ... Anxiety model. Stressful events lead to symptoms of anxiety, which can be resolved by coping ...
Steps in the humoral and cell-mediated immune responses. Steps in the humoral and cell-mediated immune responses.
A Model of Surface Dyslexia A Model of Surface Dyslexia
A model for mixed inhibition: equation A model for mixed inhibition: equation
Holley’s two-dimensional cloverleaf model of transfer RNA Holley’s two-dimensional cloverleaf model of transfer RNA
Video: Mechanisms of capillary exchange

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