The Endocrine System produces hormones which then regulate body processes. Action of hormones 1.
Peptide hormones bind to a receptor on the cell membrane.
Steroid hormones and thyroxin. Bind to receptors in blood which transport to cell. Receptor and hormone disassociate. Hormone passes through cell membrane and then bind with another receptor in the cytoplasm which carries it into the nucleus. Endocrine glands 1. hypothalamus- produces stimulatory hormones that may stimulate the pituitary gland.