THE ENDOCRINE SYSTEM

COMPARISON OF ENDOCRINE AND NERVOUS SYSTEMS

WHAT IS A SIGNAL?

CHEMICAL SIGNALS

ELEMENTS OF CELL SIGNALLING MECHANISMS

SIGNAL MOLECULES
 (FIRST MESSENGERS)

EXAMPLES OF SIGNALLING MOLECULES

RECEPTORS

LIGANDS, AGONISTS AND ANTAGONISTS

EXAMPLES OF ANTAGONISTS

REGULATION OF RECEPTOR QUANTITY AS A CONTROL MECHANISM

AN EXAMPLE OF RECEPTOR RECYCLING

MEMBRANE RECEPTORS
G-PROTEIN RECEPTOR SUPERFAMILY

CATEGORIES OF HORMONES

PEPTIDES

PEPTIDE HORMONES

AMINES

STEROIDS

PLASMA CONCENTRATION OF HORMONES

TYPES OF ENDOCRINE DISORDERS

HYPOTHALAMUS AND POSTERIOR PITUITARY

HYPOTHALAMUS AND ANTERIOR PITUITARY