Testosterone
The testosterone produced by the gonads is released into the circulation, and most of it binds to a specific protein […]
Peptide hormones
Peptides or protein hormones are substances composed of amino acid chains or proteins. They are synthesized in the form of […]
Mode of action of stimulants
Stimulants are substances that act by activating functions controlled by certain neurotransmitters, which as such act on the central nervous […]