Index

Introduction
Homeostasis
Life Span
Systems
Regulatory Functions
Nervous System
Eyes
Ears
Nose
Tongue
Brain
Endocrine System
Hypothalmus
Pituitary
Thyroid
Adrenal
Nutritional Functions
Excretary Functions
Urinary System
Kidney
Bladder
Colon
Distributive Functions
Cardiovascular System
Blood
Respiratory System
Protective Functions
Reproductive Functions
Musculo-Skeletal System
Cancer
Arthritis
Obesity
Diabetes
Cushing's Disease
Heart Disease
Teeth
Skin and Coat
Conclusion
References


Endocrine System
Thyroid

If the "King of Glands" is the hypothalmus, the Queen of Glands is the pituitary, then the Knave must be the thyroid gland. The thyroid gland controls metabolism, and makes glucose and fats available for energy. We would liken the thyroid gland to the chip that sets "clock speed" in a computer. Every system functions in cadence with that clock. Hypothyroidism (thyroid insufficiency) is common in purebred dogs, and especially as dogs age even if they never develop acute thyroiditis. The results are muscle wasting, lethargy, arthritis, and liver malfunction.

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