Substances that are released by the organs, they have to be controlled.
Hormones
What are the two main controllers of the body?
Neural and Hormonal Control
Give some examples of Chemical Messengers
NTA
Autocrine (self)
Paracrine (neighbors)
Cytokines (targets wbc to activate immune system)
Neuroendocrine (Neurohormones)
Hormones
All of these Organs are purely endocrine hormones EXCEPT??
Pituiotary Gland
Thyroid
Kidneys
Parathyroids
Islets of Langerhans
CLASSIFICATION OF HORMONES
Polypeptide
Biogenic Amine
Steroids
All of these are correct EXCEPT:
Polypeptide = Lipid-soluble
Biogenic Amine = Water - soluble
Steroids = Lipid-soluble
Polypeptide is Water-soluble