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27 Cards in this Set
- Front
- Back
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Homeostasis |
The ability or tendency to maintain internal stability in an organism, compensating for environmental changes |
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Hormones |
A regulatory substance produced in an organism and transported in tissue fluids such as blood or sap to stimulate specific cells or tissues into action |
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Nerves |
A whitish fiber or bundle of fibers in the body that transmits impulses of sensation to the brain or spinal cord, and impulses from these to muscles and organs |
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Functions Of The Endocrine System |
1- Breeding cycle/reproduction 2- Metabolism 3- Growth
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Growth Hormone |
Stimulates the rate of bone and tissue growth in foals |
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Thyroid-stimulating Hormone |
Stimulates the thyroid gland to produce a range of hormones which regulate metabolism |
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Adrenocorticotropic Hormones |
Stimulates the adrenal gland to produce a range of hormones |
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Follicular Stimulating Hormone & Luteinising Hormone |
Stimulate production of reproductive hormones in the mare. An equivalent hormone stimulates production of testosterone in stallions |
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Prolactin |
Hormone regulating production of milk |
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Posterior Lobe |
Produces Antidiuretic hormone and Oxytocin |
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Antidiuretic Hormone |
Controls water loss from the kidneys and helps to maintain homeostasis |
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Oxytocin |
Helps to stimulate foaling and milk production |
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Thyroxin |
Helps maintain the metabolic rate and regulates oxygen in the cell |
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Calcitonin |
Stimulates absorption of calcium by the bones so that it can be held and used later when calcium levels are to high |
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Parathyroid Glands |
Produce parathyroid hormone |
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Parathyroid Hormone |
Raises calcium levels to the correct height when they have fallen to low |
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Adrenal Glands |
Made up of the Adrenal Cortex and Adrenal Medulla |
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Adrenal Cortex |
Produces corticosteroids including: 1- Cortisol 2- Aldosterone |
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Adrenal Medulla |
Produces catecholamines including: 1- Adrenelin |
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Cortisol |
Released in response to stress and low levels of glucose in the blood. It increases sugar levels in the blood, suppresses the immune system and has an impact on the metabolic system |
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Aldosterone |
Contributes to the process of osmoregulation. It helps regulate the balance of salt and water in the blood by encouraging the kidneys to reabsorb sodium, so increasing water retention |
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Adrenalin |
Increases heart rate and blood pressure, and dilates air passages. |
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Glucoregulation |
Regulation of levels of blood sugar by the pancreas |
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Hyperparatyroidism |
Too much parathyroid hormone |
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Hypothalamus |
Part of the brain which helps control the endocrine system |
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Osmoregulation |
Regulation of levels of water in the blood by the hypothalamus and kidneys |
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P.P.I.D |
Pituitary Pars Intermedia Dysfunction commonly known as cushings |
