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9 Cards in this Set

  • Front
  • Back
What is a hormone? What cells are affected by a hormone?
A chemical secreted into the blood by an endocrine gland that causes change in target cells somewhere in the body.
What is a hormone called when it is secreted by neurons?
A neurohormone.
What is the paracrine system?
The system where cells do not secrete regulatory chemicals into the blood.
What are pheromones?
Chemicals released into the environment that aid in animal-to-animal communication.
What are the four chemical categories of hormones?
Polypeptides, Glycoproteins, Amines, Steroids.
What are the two subdivisions of steroids?
Sex steroids (testes, ovaries, placenta, adrenal cortex) and Corticosteroids (only adrenal cortex).
Where are catecholamines produced? What amino acid are they derived from? What are two catecholamines?
The adrenal medulla. Tyrosine. Epinephrine (adrenaline) and Norepinephrine (noradrenaline).
Hormones can be lipophobic (polar) or lipophilic (nonpolar). Which hormones are lipophilic?
The steroid hormones and thyroxine.
Card Set Incomplete
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