Pathak- Endocrine System Flashcards
(12 cards)
0
Q
Hormone
A
Secreted chemical messages that initiate changed in the cells that receive them
1
Q
Endocrine system
A
Consist of hormones and the various cells that secrete and receive them
2
Q
Target cells
A
Particular cells that are affected by hormones
3
Q
Peptide hormones
A
Hormones composed of short amino acid chained (peptide)
4
Q
Amino- acid Derivatives
A
Synthesized from single amino acids
5
Q
Sterile Hormones
A
- synthesizer from cholesterol
- secreted by the ovaries, placenta, testes, and adrenal cortex
6
Q
Prostaglandins
A
- Synthesized from fatty acid
- molecules consist of 2 fatty carbon chains attached to a 5- carbon ring
7
Q
General Location of Hormone Receptors
A
- plasma membrane
- inside (nucleus)
8
Q
Second messenger
A
- Transfers the signal from first messenger ( hormone) to molecules within the cell
- involved in direct mechanisms
9
Q
Cyclic AMP
A
- Acts as a second messenger and initiates a chain of reactions inside the cell
- changed from ATP by an enzyme
10
Q
Hormone Receptors On Plasma Membrane
A
- not lipid soluble hormones (usually composed of amino acids)
- short lived
11
Q
Hormone Receptors in Nucleus
A
- take long time
- steroid and thyroid hormones
