Flashcards in Intro to Endocrine Deck (14)
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1
What is a hormone?
A chemical substance released in small quantities from certain glands that travel through teh circulatory system to elicit a specific response in other cells.
Includes Neurohormones.
DOES NOT include intracellular messengers like cyclic AMP, local mediators like Nitric Oxide, CO2
2
What are some examples of Neuroendocrine
Posterior Pituitary, Adrenal Medulla, Hypothalmic releasing hormones.
3
Three general categories of hormones?
-Steroids and Steroid like hormones
-Amino Acid Derivatives
-Peptide and Proteins
4
Steroids and steroid like hormones are derived from what?
Cholesterol
5
Amino Acid Derivatives are derived from
Specifically Tyrosine
6
Endocrine gland locations
know them
7
Two methods of hormone action
Direct or Indirect or Permissive
8
What is permissive action
A hormone that allows another hormone to work better. Example: Thyroid hormone allowing epinephrine to mobilize large amounts of fatty acids by causing an increased number of epinephrine receptors
9
What type of hormones use intracellular receptors?
Steroids and Thyroid Hormone
10
What is the function of second messengers
1) Amplify hormone signaling
2) Disperse Hormone signaling
11
What are the three categories of hormones measurements
Free, Bound, Total (free + bound)
12
What's the active form of a hormone
Free, that't the type that can get across the capillary
13
What are some types of hormones that use intracellular receptors?
Steroids and Thyroid hormone
14
