The Endocrine System

1
The Endocrine System

• Chapter 17
• pgs 529-535, 537-542,560-573 stress response

2
The Endocrine System
compare Figure 17-1

• reproduction
• growth, development
• stress
• homeostasis
• metabolism
• H2O balance

3
Hormones

• 2nd messenger system via bloodstream
• produced by endocrine cells
• regulate distant cells with hormone receptors

4
Negative Feedback Control
Figure 17-2
5
Neuroendocrine Circadian Effects
Figure 17-3
Figure 17-7a
6
Stress
compare Figure 17-20
7
Responsiveness of Target Cell

• deliberate changes in target cell receptors
• down-regulation
• localized decrease in receptors
• permissiveness
• one hormone allows a second to act
• synergism
• hormone action is complementary
• antagonism
• hormone opposes the action of another

8
The Hypothalamus
Figure 17-5, 8
9
Tropic Pituitary Hormones
thyroid- stimulating hormone
adreno- corticotropic hormone
Figure 17-6
lutenizing hormone
follicle- stimulating hormone
10
Fuel Metabolism

• catabolism ? anabolism

11
Fuel Metabolism
Figure 17-24
12
The Absorptive Postabsorptive States
13
Pancreatic Hormones