,Endocrine System
• Chemical co-Ordinator = uses hormones to communicate througho
the body
• Hormones = protein / lipid based molecules that are secreted by
endocrine glands and carried in blood to target organs
F = homeostasis
• Target organ = specific receptor sites for specific hormones. Can be
stimulated of inhibited by changes to the set point / homeostasis
• Glands = secrete hormones
, Glands
• Endocrine = hormones travel in blood, ductless
• Exocrine = ducts, digestive juices
• Since hormones travel in blood to target organs, any changes in blo
composition will stimulate or inhibit hormone secretion