Endocrine System Flashcards
Endocrine System
Pituitary Gland
"”Master Gland””: Two parts (neurohypophysis, adenohypophysis)
Endocrine System
Pituitary Gland location
Hangs from hypothalmus, protected by turcica
Endocrine System
Posterior pituitary gland
Produces ADH and Oxytocin, releases when neural impulse from hypothalamus
Endocrine System
Anterior pituitary gland
Produces GH, TSH, ACTH, prolactin, FSH, LH, and otherreleasing hormones.
Endocrine System
ADH
"”Vasopressin””, maintains BP by reabsorption of water by kidney tubules and vasoconstriction
Endocrine System
Oxytocin
Stimulates contraction of uterus and release of milk
Endocrine System
Hormone
Chemical substance secreted by a gland into the BLOODSTREAM that controls another gland or body system.
Endocrine System
Diuresis
The formation of urine (not peeing), but once it goes to the bladder you can’t get urine back.
Endocrine System
Amines
Variations of thyrosine, include thyroxin, epi, and nor-epi
Endocrine System
Proteins
Chains of amino acids, insulin, groth hormone, and calcitonin
Endocrine System
Steroids
Made of cholesterol, cortisol, aoldosterone, estrogen, progesterone, and testosterone
Endocrine System
Hormones work on this feedback mechanism
Negative feedback mechanism
Endocrine System
What do endocrine glands respond to?
Blood level changes or other hormones present in the blood stream
Endocrine System
Hypothalmus
Releasing hormones for anterior pituitary
Endocrine System
Pineal Gland
Melatonin
Endocrine System
Thymus Gland
Immune hormones, huge when we’re born and gets smaller with age
Endocrine System
Pancreas
Insulin and Glucagon
Endocrine System
Ovaries
Estrogen, progesterone, and Inhibin
Endocrine System
Reabsortion
"”Put it back in the blood stream””
Endocrine System
Parathyroid Glands
PTH: parathyroid hormone can increase calcium in blood stream. They are found behind the thyroid, pea shaped and can have 3-6 other them.
Endocrine System
Adrenal (suprarenal) Glands
Cortex: Aldosterone, cortisol, sex hormones Medulla: Epi and Nor-epi
Endocrine System
Testes
Testosterone, Inhibin
Endocrine System
Adrenocorticotropic Hormone (ACTH)
Increases secretion of cortisol by the adrenal glands
Endocrine System
T3 and T4
Triiodothyronine and Thyroxin: Increase energy production and rate of protein synthesis
Endocrine System
GH
Growth Hormone: Increases mitosis, amino acid transport into cell, protein synthesis, and use of fats for energy
Endocrine System
Thyroid Gland location
Front and sides of trachea, the two lobes are connected by isthmus (bridge across trachea)
Endocrine System
Thyroid Gland
Produces T3, T4, and calcitonin (regulates calcium in calcium when calcium level too high ““calcitone it down””)
Endocrine System
Another name for a tumor
Neoplasm
Endocrine System
Graves Disease
Hyperthyroidism: Abnormal thyroid stimulating mechanism, increased iodide uptake, thyroid metabolism, growth, and secretion of hormone
Endocrine System
Thyrotoxic Crisis (thyroid storm)
worsening of a thyrotoxic state, possible death within 48 hours (no way to stop thyroid from releasing hormone, we can only sedate them)
Endocrine System
The hormone that lowers blood glucose level by enabling cells to take glucose in
Insulin
Endocrine System
The hormone that increases the rate of cell division
Growth Hormone
Endocrine System
Pancreas
Endocrine functions: islets of langerhans have three types of cells; Alpha, Beta, and Delta