Types of Hormones Flashcards
1
Q
Peptides
A
- most hormones
- from hypothalamus, anterior and posterior pituitary, pancreas, and parathyroid
- short proteins
- do not pass cell membrane, bind to cell surface receptors
2
Q
Amines
A
- derived from amino acids, tyrosine
- from thyroid gland, and adrenal medulla (hormones from adrenal medulla are called catecholamines
- catecholamines must bind to cell surface receptors
3
Q
Steriods
A
- neutral lipids derived from cholesterol
- from adrenal cortex, ovaries, and testes
- are lipid soluble (lipophilic- transported by plasma proteins)
4
Q
hypothalamus
A
peptide
5
Q
anterior pituitary
A
peptide
6
Q
posterior pituitary
A
peptide
7
Q
pancreas
A
peptide
8
Q
parathyroid
A
peptide
9
Q
thyroid gland
A
amine
10
Q
adrenal medulla
A
amine (catecholamines)
11
Q
adrenal cortex
A
steroid
12
Q
ovaries
A
steroid
13
Q
testes
A
steroid
14
Q
plasma membrane receptors
A
hydrophilic peptides and catecholamines
-poor soluble in lipid, unable to cross lipid binary and bind to plasma membrane receptors
15
Q
Intracellular receptors
A
lipophilic steroids and thyroid hormones cross the lipid byliner and bind to specific intracellular receptors
