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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. Hypothalamus -> Anterior Pituitary: modifies activities

2. 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

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

4. Atrial natriuretic factor (ANF) & Aldosterone

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

6. Thyroid: in the child it is necessary for physical and mental development; in the adult - it increases metabolic rate and temperature

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

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

9. Posterior Pituitary -> Kidney: water retention

10. 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

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

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

13. Anterior Pituitary -> Mammary Gland: milk production

14. Adrenal Medulla: sympathetic stress response (rapid)

15. Testes: male characteristics; spermatogenesis

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

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

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

19. Ovaries / Placenta: Female characteristics - endometrial growth

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

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

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

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

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

25. Oxytocin and Prolactin

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

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

28. Kidney -> Bone Marrow: increases RBC synthesis

29. Insulin and Glucagon

30. Parathyroid hormone and Calcitonin

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

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