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Endocrine System
Biology 30
Term | Definition |
---|---|
Homeostasis | |
Exocrine Gland | Glands that release secretions through ducts into a body cavity outside the body |
Endocrine Gland | ductless glands that release hormones directly into blood or lymph |
Hormone | chemical messenger for endocrine system; regulates activities of organs/tissues |
Negative Feedback | High hormone concentration or its effects inhibit further production of the hormone. Prevents over secretion and promotes homeostasis. |
Positive Feedback | High hormone concentration or its effects promote further production of the hormone |
Tropic Hormone | |
Short-Term Stress Response | |
Fight-or-Flight Response | |
Long-Term Stress Response | |
Hypothalamus | Controls the autonomic nervous system with medulla oblongata. Regulates body temperature and intake of food and water. Influences reproductive physiology. Has specialized neural cells that produce/secrete hormones |
Anterior Pituitary | Controlled by releasing hormones from hypothalamus. Synthesizes an releases 6 hormones that help control reproduction and growth and metabolism |
Posterior Pituitary | Controlled by nerves from hypothalamus. Doesn't synthesize hormones. Instead stores and releases ADH and oxytocin profuced by hypothalamus. ADH and oxytocin are transferred to the posterior pituitary by neuronal axons. |
Thyroid Gland | Increases metabolic rate. Lowers blood calcium levels |
Parathyroid Gland | Specialized tissue on thyroid |
Adrenal Gland | |
Pancreatic Islet Cells | |
Ovary | |
Testis | |
Type I Diabetes Mellitus | |
Type II Diabetes Mellitus | |
Diabetes Insipidus | |
Hyperglycemia |