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Breathing is the mechanism that allows oxygen to enter the lungs. Resiration is the process that uses oxygen along with glucose to produce energy.

The innate immune response is broader and faster than the adaptive. It is able to react against a wide variety of different pathogens including viruses , bacteria and parasites . It is non-specific , meaning...

A hormone is a chemical messenger. It is produced by a gland and then travels in the blood to a specific target organ where it causes a response, changing the way the body functions. Hormones can be protein ...

Energy in the form of ATP, which is used to fuel chemical reactions in our body as well as many other processes. Waste products: Carbon dioxide and water.

A synapse is the tiny gap between two neurones. At a synapse information is passed across the gap via chemicals, called neurotransmitters, rather than using electrical impulses. When information passes acros...