26. Veins present with the following features except:
a. valves b. transport blood from body to heart
c. lumen wide than arteries d. Tunica media is the thickest

27. The left side of the head is drain by the
a. left lymphatic duct b. right lymphatic duct c. thoracic duct d.axillary node

28. The direction of fluid of the lymph is carried away from theheart
a. T b. F

29. Plasma cells are lymphocytes that
a. produce antibodies b. phagocyte foreign substances
c. produce antigens d. produce reticular fiber stroma

30. Cells that engulf foreign substances and help activate T cellare
a. T cells b. B cells c. Reticular cells d. Macrophages e. Plasmacell

31. Lymph nodes bear fewer afferent lymphatic vessels than efferentlymphatic vessels
a. T b. F

32. The part of the lymph node that house T cell in transit isthe
a. medulla b. hilus c. cortex d. capsule

33. All of these organs are part of the lymphatic systemexcept:
a. Spleen b. Thymus c. Pancreas d. Tonsils e. Peyer’s patches

34. The lymphoid organ that functions primarily during the firstyears of life is the
a. Spleen b. Thymus c. Pancreas d. Tonsils e. Peyer’s patches

35. Which lymphoid organ stores products of red blood cells, issite for erythropoietin before
birth, and stores blood platelets?
a. Spleen b. Thymus c. Pancreas d. Tonsils e. Peyer’s patches

36. The saclike initial portion of the thoracic duct is the
a. lacteal b. right lymphatic duct c. cisterna chyli d. lymphsac

37. The structural framework of lymphoid organs is
a. areolar connective tissue b. hematopoietic tissue c. reticulartissue d. adipose tissue

38. The blood pressure range is greatest in a/an/the:
a. vein b. venule c. capillary d. artery e. arteriole

39. How many different sites are where a pulse can be palpatedabove the heart?
a. 1 b. 2 c. 3 d. 4 e. 5   

40. Collections of lymphoid tissue (MALT) that guard mucosalsurfaces include all of
following except
a. GI tract b. respiratory tract  
c. reproductive tract d. mediastinum e. urinary tract

41. The tricuspid valve is:
a. the left AV valve b. located in the AV junction c. the right AVvalve

42. The layer over the external surface of the heart also calledvisceral layer of the heart is the _______
a. endocardium b. myocardium c. epicardium

43. The _______________ , functional supply of the heart, is theshortest circulation in the body.
a. systemic circulation b. pulmonary circulation c. coronarycirculation

44. The relaxation of the period of the heart refers to:
a. contraction b. preload c. diastole d. systole

45. The term bradycardia refers to:
a. amount of blood at any given time in the hart b. a heart rateslower than 60 beat per minute
c. stretch of the heart with each contraction d. an impulse of theAV of 60 times

46. In Tetralogy of Fallot the chamber of the heart that eventuallyenlarges (hypertrophies) is the __________.
a. left ventricle b. right ventricle c. left atrium d. right atrium  

47. The following are factors used as short terms mechanism tocontrol arterial blood pressure except
a. atrial natriuretic peptide b. renal regulation c. angiotensinII
d. antidiuretic hormone e. adrenal medulla hormones

48. When the heart is inefficient to sustain adequate circulationis called:
a. cardiogenic shock b. vascular shock c. hypovolemic shock d.septic shock

49. Which component of the lymphatic structures is responsible forthe formation of all formed elements?
a. spleen b. lymph nodes c. thymus d. red bone marrow e.tonsils

50. Which structure of the lymphatic system initiates the immuneresponse when an organ is attack by a pathogen or tumor?
a. spleen b. lymph nodes c. thymus d. red bone marrow e.tonsils