Subject classification: this is a chemistry resource.
Completion status: this resource is a stub, which means that pretty much nothing has been done yet.

Chemistry is an extremely important topic in physiology. Most physiological processes occur as the result of chemical changes that occur within the body. These changes include the influx/efflux of ions across a neuron's membrane, causing a signal to pass from one end to the other. Other examples include the storage of oxygen in the blood by a protein as it passes through the lungs for usage throughout the body.

Fundamentals

The smallest building block of chemistry is the atom. The atom is subdivided into three atomic particles: the proton, the electron, and the neutron. Protons carry a positive charge. Electrons carry a negative charge. Neutrons have no charge at all.