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MCAT Hormones

Subjects : mcat, science
  • Answer 32 questions in 15 minutes.
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This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Thyroid: in the child it is necessary for physical and mental development; in the adult - it increases metabolic rate and temperature

2. Parathyroid hormone and Calcitonin

3. Adrenal Medulla -> Kidney: increased Na+ reabsorption to increase blood pressure

4. Oxytocin and Prolactin

5. Thymus: is involved in T- cell development during childhood.

6. Kidney -> Bone Marrow: increases RBC synthesis

7. Heart -> Kidney: increases urination to decrease blood pressure

8. Anterior Pituitary -> Ovary / Testes: follicle development or spermatogenesis

9. Ovaries / Placenta: leads to endometrial secretion - pregnancy

10. Anterior Pituitary -> Adrenal Gland: increases growth and secretory activity of adrenal cortex

11. Adrenal Cortex: not normally important - but an adrenal tumor can overproduce these - causing masculinization or feminization.

12. Anterior Pituitary: increases bone and muscle growth - increases cell turnover rate

13. Adrenal Cortex: results in a longer - term stress response; increased blood [glucose]; increased protein catabolism; decreased inflammation and immunity; many other

14. Atrial natriuretic factor (ANF) & Aldosterone

15. BETA Cells of The Islets of Langerhans In The Pancreas: decreases blood [glucose]; increases glycogen and fat storage; it is activated at high blood [glucose] and is absent or ineffective in diabetes melitus

16. Anterior Pituitary -> Mammary Gland: milk production

17. Glucagon (polypeptide derivative) - Epinepherine (amino acid derivative) - Cortisol (steroid / glucocorticoid)

18. Adrenal Medulla: sympathetic stress response (rapid)

19. Anterior Pituitary -> Thyroid: increases synthesis and release of thyroid hormone (tropic)

20. Thyroid C Cells -> Bone - Kidney - Small Intestine: lowers serum [Ca2+]

21. Hypothalamus -> Anterior Pituitary: modifies activities

22. Posterior Pituitary -> Kidney: water retention

23. Ovaries / Placenta: Female characteristics - endometrial growth

24. Oxytocin - Prolactin - Progesterone - Estrogen - LH - FSH

25. SIGMA Cells of The Islets of Langerhans In The Pancreas: inhibits many digestive processes

26. Glucagon (alpha) & Insulin (beta) & Somatostatin (sigma)

27. Testes: male characteristics; spermatogenesis

28. Posterior Pituitary -> Breast & Uterus: milk letdown and uteral contractions

29. Anterior Pituitary -> Ovary/ Testes: ovulation or testosterone synthesis

30. Insulin and Glucagon

31. ALPHA Cells of The Islets of Langerhans In The Pancreas: secreted at low blood [glucose] and results in an increase in blood [glucose] and decrease in glycogen and fat storage

32. ParaThyroids -> Bone - Kidney - Small Intestine: raises serum [Ca2+]