AN_S_214_Koltes_chelseap_Practice_Final_KEY.docx

C sa node av node av bundle of his right and left

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c. SA node, AV node, AV bundle of His, right and left bundle branches, Purkinje fibers. d. AV node, SA node, Purkinje fibers, AV bundle of His, eight and left bundle branches. 23. The pacemaker of the heart is the:
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a. AV node b. Bundle of His c. The bundle branches d. SA node 24. On the electrocardiogram, repolarization of the atria is represented by the: a. P wave b. QRS complex c. T wave d. It does not appear since it is obscured by the QRS complex 25. Which of the following structures allow one cardiac cell to electronically stimulate another by allowing ion flow across the intercalated discs? a. Fascia adherens b. Gap junctions c. Desmosomes d. Intercellular folds IMMUNE 26. Complement proteins work by: a. Forming pores in the membranes of target cells. b. Phagocytosis of target cells. c. Neutralization of antigens. d. Producing antibodies. 27. Lymphocytes that develop immunocompetence in the thymus are: a. T lymphocytes. b. NK cells. c. B lymphocytes. d. Cytotoxic T cells. 28. The immune cell that allows for subsequent recognition of an antigen, resulting in a secondary response, is called a(n): a. Helper T cell. b. Memory cell. c. Antigen-presenting cells. d. Plasma cell. 29. Which of the following is a characteristic of a secondary immune response?
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a. A secondary immune response is started by naïve lymphocytes, while the primary immune response is initiated by memory cells. b. A secondary immune response does produce as many antibodies compared to a primary immune response. c. A secondary immune response is slower than a primary immune response. d. A secondary immune response lasts longer than a primary immune response. 30. Humoral immunity is provided by: a. T cells. b. Interferons. c. Antibodies. d. Complement proteins. RENAL 31. How is Na+ reabsorbed? a. Osmosis b. Facilitated diffusion c. Active transport using ATP d. Diffusion 32. The basic functional unit of the kidney is the: a. Major calyx. b. Nephron. c. Glomerulus. d. Loop of Henle. 33. The Bowman’s capsule and glomerulus make up the: a. Collecting system. b. Renal corpuscle. c. Papilla. d. Loop of Henle. 34. Arrange the following structures in the correct sequence in which urine passes through them to the external environment. (1) ureter, (2) renal pelvis, (3) calyx, (4) urinary bladder, (5) urethra a. 3, 4, 1, 5, 2 b. 2, 4, 1, 3, 5 c. 3, 2, 1, 4, 5 d. 1, 2, 3, 4, 5 35. All of the following functions are carried out the renal tubules, except:
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a. Filtration b. Reabsorption c. Secretion d. Formation of urine RESPIRATORY 36. Which of the following are not contained in the respiratory zone? a. Alveoli b. Respiratory bronchioles c. All of the above are parts of the respiratory zone d. None of the above are correct 37. The amount of gas that will dissolve in a liquid is proportional to the __________of the gas.
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