An ion channel that opens when
neurotransmitter binds to it is called a ligand-gated channel. Ligand-gated channel
is a group of transmembrane ion channel proteins which open to allow the
passage of ions such as Na+, K+ through the membrane upon activation by a
specific chemical such as a neurotransmitter.
An ion channel that opens when neurotransmitter binds to it is called a Ligand-gated ion channel. These channels are also called ionotropic receptors; they open to allow ions such as potassium ions, sodium and calcium and/or chloride ions to pass through the membrane in response to the binding of a chemical messenger or a ligand (for example a neurotransmitter).
The glucose and the oxygen travel out into the body through the circulatory system to reach cells that need energy. The cells use the glucose and oxygen from the circulatory system for energy production.