Endocrine Flashcards 1. What is the definition of a hormone? 2. Compared to most other organs in the body, are endocrine organs well vascularized? 3. Which gland is a major source of steroid hormones in the body? 4. Tumor of the pituitary gland can lead to what? 5. Trauma to the pituitary gland can lead to what? 6. what are the two parts of the pituitary gland? 7. What are the seven hormones secreted by the adenohypophysis (anterior pituitary) 8. What two hormones are secreted by the neurohypophysis (posterior pituitary)? 9. What are their functions? 10. What is essential for the formation of the thyroxin portion of thyroid hormone? 11. What pituitary disorders are involved with hypersecretion of GH in children, overall growth 12. What is the disorder when excess GH causes just enlarged hands and feet? Substances that are secreted by one group of cells that affects the physiology of another group of cells Yes Adrenal gland, cortex region Blindness Diabetes insipidus Adenohypophysis is the anterior pituitary. Neurohypophysis is the posterior pituitary. Growth hormone(GH): Prolactin(PRL): Thyroid stimulating hormone(TSH): Adrenocorticotropic hormone(ACTH): Melanocyte-stimulating hormone(MSH): Follicle-stimulating hormone (FSH): Luteninzing hormone(LH) Oxytocin: stimulates childbirth contractions ADH: increases blood volume (no salt involved) Iodine Gigantism Acromegaly Pituitary dwarfism 13. What disorder is hyposcretion of GH, resulting in normal proportion of head and limbs; overall size is small? 14. Where is ADH secreted? 15. What disorder is a result of not enough ADH? (anti-diuretic hormone; a diuretic takes out excess fluid from the body) 16. What are the 2 hormones produced by the thyroid gland? 17. What does thyroid hormone do? 18. What does calcitonin do? Pituitary gland (posterior portion) Diabetes insipidus Thyroid hormone and calcitonin Increases metabolism Lowers blood calcium 1 Endocrine Flashcards 19. Which hormone is responsible for raising blood calcium levels? Parathyroid hormone 20. Where is vitamin D synthesized? 21. What glands sit on top of each kidney? 22. Adrenal cortex secretes what three steroids? In the dermis Adrenal gland Cortisol Aldosterone Sex hormones for the opposite sex: males produce estrogen here, and females produce testosterone. Cortisol 23. What hormone helps the body cope with stress? 24. What hormone raises blood pressure by increasing salt reabsorption? 25. What hormone increases blood volume without increasing salt retention (no slat involved)? 26. Adrenal medulla secretes which hormones? 27. Hypersecretion of cortisol and a round "moon" face and "buffalo hump" are characteristic of what disorder? 28. Hyposecretion of cortisol, increased blood acth levels, low blood volume and pressure, and increased skin pigmentation are characteristics of what disorder? 29. What does the pineal gland secrete? 30. Which endocrine gland stands out in x-ray images and helps radiologists get oriented in the brain? 31. What signals the liver to release glucose from glycogen and raises blood sugar? 32. What signals most body cells to take up glucose from glycogen from the blood, promotes storage of glucose as glycogen in the liver, and lowers blood sugar? 33. What disorder is when the pituitary gland does not secrete antidiuretic hormone, or the kidney does not respond to it? 34. What are the 2 types of diabetes mellitus? 35. How is type ii diabetes treated initially? Aldosterone ADH Epinephrine and norepinephrine Cushing’s disease Addison’s disease Melatonin- A hormone that regulates circadian rhythms (sense of daytime and night; it regulates sleep cycle) Pineal gland Glucagon Insulin Diabetes insipidus; can also be caused by damage to the pituitary or kidney damage. Type I (insulin dependent, develops in children) Type II (insulin resistance, develops in adults) Diet and exercise 2 Endocrine Flashcards 36. What two hormones do the ovaries secrete? 28. What is the primary sex organ in the male? What does it secrete? 37. What is the only thing that does not make hormones? Why? 38. In an under-secreting thyroid tumor will TH be high or low? Progesterone and estrogen Testes, not penis Secrete androgens (e.g. Testosterone) Epithelial duct cells (they are exocrine glands) Because all exocrine glands secrete into a duct, and the definition of a hormone is one that does not secrete into a duct; it secretes into the blood Low 39. Will TSH-RH be high or low? High 40. Will TSH level be high or low? High 41. What might cause the above condition? 42. What is Graves’ disease? Goiter caused by iodine deficiency Autoimmune disease that causes hyperthyroidism. There is increased th, and decreased tsh-rh and tsh 43. During hypoglycemia, what hormone is released? What gland releases it? What is its effect on the blood sugar levels? What does cortisol do? Glucagon What hormone increases protein and fat catabolism (breakdown) and increased blood glucose levels? What hormone increases protein synthesis, and increases fat catabolism (breakdown) and increased blood glucose levels? What two hormones suppress the immune system? Cortisol 50. Why might a person be prescribed cortisol or prednisone? To suppress the immune system, in cases of autoimmune diseases like rheumatoid arthritis. 51. What are the secondary male sex characteristics? 52. What is the primary hormone responsible for development of female secondary sex characteristics? Deep voice, facial hair, and large thyroid cartilage. The testes enlargement is not a secondary sex characteristic. Estrogen 44. 45. 46. 47. 48. 49. Pancreas Raises blood sugar Stimulates fat and protein catabolism to use for gluconeogenesis. It also increases glucose levels. Growth hormone Cortisol and prednisone 3