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
Pituitary

The small gland joined to the hypothalamus at the base of the brain. It supplies growth hormone and many other hormones that control the responses of many other glands. In the aged dog with fluid and elextrolyte dysfunctions, the posterior pituitary is often suspect. Older dogs often present with fluid and electrolyte imbalances (posterior pituitary) and Cushing's Disease where where an excess of corticotropin (ACTH) is secreted by the anterior pituitary.x As dogs age, it is fairly common for them to develop pituitary tumors which disrupt normal pituitary secretions which in turn may cause secondary dysfunction across a wide range of endocrine glands.

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