Test your basic knowledge |

MCAT Biology Circulatory System

Subjects : mcat, health-sciences
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

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. 2 portal systems to know






2. Monocyte that phagocytoses debris and microorganisms - has amoeboid motility - and displays chemotaxis






3. Contraction of the ventricles - where pressure increases rapidly - causing AV valves to close - Marks the beginning of the 'lub' sound






4. Connected to SA node via internodal tract - and passes signal to Common bundle of His to contract ventricles






5. Request by tissues to increase blood flow - where build up of metabolic waste causes arterioles to dialate






6. Transportation of blood though the body and exchange of material btw blood and tissues






7. Region that initiates start of cardiac cycle - which acts as a pacemaker of the heart; has unstable resting potential due to Na leak channels






8. As low as pressure gets btw heart beats in arteries






9. Rh factor that follows dominant pattern (Rh+ in heterozygote)






10. When do Rh antibodies develop?






11. AV valve between left atrium and left ventricle






12. Glycoproteins that are coded for by 3 alleles (A - B - i)






13. What causes tendency of water flow out of blood?






14. Because the veins have essentially 0 pressure - these valves ensure one - way flow - skeletal muscle contraction encourages flow through veins






15. Flow of blood through a tissue






16. Pass through the capillaries in order to patrol the tissue for invading organisms; only macrophages and neutrophils can squeeze through cleft






17. Number of systole contractions per unit time






18. Why is the SA node the primary pacemaker?






19. Absorbed by the GI tract and brought to the liver via the hepatic portal vein - where they are stored in the liver and enter the blood stream when needed






20. What is the direct cause of edema?






21. When do semilunar valves close?






22. 3 factors that dictate the affinity of hemoglobin for O2






23. Metabolic waste product in breakdown of amino acids






24. Is cardiac output the same or different btw the two ventricles?






25. 20% transported stuck to hemoglobin; why increased pCO2 decreases affinity of O2






26. Bone marrow cells that give rise to RBC and platelets






27. Protein that maintains oncotic pressure in capillaries






28. Fat storage cells of the body






29. First branches from the aorta that provide the heart's blood supply






30. Flow of blood from the heart to the lungs - pumped by the right side of the heart






31. At the end of the capillary - is the osmotic pressure high or low?






32. Purpose of erythrocytes?






33. Mother has Rh - blood with Rh+ antibodies that attack the babies Rh+ blood






34. Osmotic pressure in capillaries due to plasma proteins






35. Return of blood to the heart by the vena cava - where increased venous return causes increased stretching of the muscle (increases stroke volume)






36. Occurs when increased cardiac output is needed; the postganglionic nerve directly innervates the heart - releasing norepinephrine - increasing heart rate and force of contraction






37. Pump blood out of the heart at high pressures into arteries






38. Inadequate blood flow - resulting in tissue damage due to shortage of O2 and nutrients - and increase of metabolic waste






39. Connects the two capillary beds of the intestine and the liver






40. 2 chambers of the heart






41. Muscular pump that forces blood through series of branching vessels






42. Opposing friction force to flow - which increases with decreased radius; determined by degree of contraction of arterial smooth muscle






43. Vessels that carry blood away from the heart at high pressure






44. Difference in pressure=blood flow (L/min)*resitance ^P=Q*R

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


45. The difference btw systolic and diastolic blood pressures






46. Precursor to fibrin - which is necessary for blood clotting






47. Filling of the ventricles by squeezing of the atria - marks the beginning of the 'dub' sound






48. Body's mechanism of preventing bleeding






49. 73% of CO2 converted to carbonic acid by carbonic anhydrase - and carbonic acid is converted to bicarbonate - which acts a buffer






50. Where do all components of the blood develop from?