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Endocrine System
Fall 2009
Outline
• Overview
• Hormones
• Specific Endocrine Organs & Hormones
Endocrine System: Overview• Endocrine system – the body’s second great controlling
system
• Major processes controlled– Reproduction– Growth & Development– Mobilization of body’s defenses– Maintenance of electrolyte, nutrient and water balance– Regulation of cellular metabolism– Energy balance
Hormones
Types of Hormones
Types of Hormones
Amino Acid–Based Hormone Action: cAMP Second Messenger
Figure 17.1a
Amino Acid–Based Hormone Action:
PIP-Calcium
Figure 17.1b
Steroid Hormones
Figure 17.2
Hormone Concentrations in the Blood
Control of Hormone Synthesis and Release
Figure 17.3a
Major Endocrine Organs: Pituitary
Figure 17.5
Figure 17.5
Pituitary-Hypothalamic Relationships: Anterior Lobe
Figure 11.15
Figure 11.16
Figure 11.17
Figure 11.18
Metabolic Action of Growth Hormone
Figure 17.6
Homeostatic Imbalances
Thyroid Gland
Figure 17.8a
Thyroid Hormone (TH)
Hypothyroidism
Graves Disease
Effects of Parathyroid Hormone
Figure 17.11
Adrenal Glands
Figure 11.06
Figure 11.19
Cushings Syndrome
Addisons Disease
Gonadocorticoids
Pancreas - Insulin
Pancreas - Glucagon
Pineal Gland
• Small gland hanging from the roof of the third ventricle of the brain
• Secretory product is melatonin• Melatonin is involved with:
– Day/night cycles– Physiological processes that show rhythmic
variations
Summary
• Overview
• Hormones
• Specific Endocrine Organs & Hormones
