The boundary of a cell; a double layer of phospholipid molecules associated with other lipids (including cholesterol) and a variety of membrane proteins.

(cellular respiration) The complete oxidative catabolism of glucose (C₆H₁₂O₆)to carbon dioxide and water according to the following equation, which summarizes a long sequence of reactions in which large amounts of energy are released (mostly as ATP):

C₆H₁₂O₆ + 6O₂ 6CO₂ + 6H₂O + energy

The part of the nervous system that consists of the brain and spinal cord.

Concerning the brain, or mediated via the brain.

The term cerebrum is often used as a collective name for the left and right cerebral hemispheres of the brain.

A property of some objects that is responsible for electrostatic interactions (i.e. attraction or repulsion) between them. There are two types: positive and negative. Like charges repel and unlike charges attract each other. A stream of moving negative charges (electrons) through an electrical conductor produces an electric current.

A chemical that serves a role of communication. In its broad definition, the term includes hormones. In its more narrow definition, it is synonymous with a neurotransmitter.

A process in which a substance (or substances) is transformed to a different substance (or substances) by a rearrangement of the atoms and their accompanying electrons.

A synapse at which communication is effected by a chemical that is released from a neuron and occupies receptors at the second cell.

A chemical that is released from a neuron and occupies receptors at a second cell, thereby effecting communication from the first cell to the second.