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. Fat storage cells of the body






2. Amount of blood pumped w/ each systolic contraction






3. Excessive bleeding that results from defective proteins






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






5. Flow from the heart to the rest of the body; pumped by the left side of the heart






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






7. Number of systole contractions per unit time






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






9. Universal acceptor






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






11. Response by CNS when blood pressure is too high






12. Which is longer - diastole or systole?






13. Store and release histamine and are involved in allergic rxns






14. Confirmation of hemoglobin with no O2 bound - so it has low affinity






15. Protein that maintains oncotic pressure in capillaries






16. Produced during cell metabolism and diffuses through the endothelial cells into the blood stream - where it is picked up by the liver and converted to forms that can be excreted (all other wastes are picked up by the kidneys)






17. Open when threshold is reached causing membrane potential to increase/depolarize; operate slower than Na channels






18. Ensure the one - way flow through the circulatory system






19. AV valve between right atrium and right ventricle






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






21. Voltage - gated channels that stay open longer than Na channels and open later responsible for the plateau phase of cardiac muscle contraction






22. Flow of blood through a tissue






23. Response by CNS when blood pressure is too low






24. Plasma that lacks clotting proteins






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






26. Resting membrane potential of -90mV and have long duration action potentials






27. Gap junctions in the cardiac muscle - where depolarization is communicated directly btw cytoplasm of neighboring cardiac cells






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






29. Receives deoxygenated blood from systemic circulation (superior and inferior vena cava)






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






31. Why is the SA node the primary pacemaker?






32. What is the most important plasma protein in the body? Why?






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






34. Capillaries dilate - increasing the cleft size - which allows more H2O to move through to tissues






35. 20% transported stuck to hemoglobin; why increased pCO2 decreases affinity of O2






36. 1. depolarization caused by fast Na channels - where action potential through intercalated discs reaches threshold potential - opening Na channels 2. initial depolarization with Na channels closing and k channels opening - but Ca channels also open 3






37. 73% of CO2 converted to carbonic acid by carbonic anhydrase - and carbonic acid is converted to bicarbonate - which acts a buffer






38. Control of by ANS of rate of contraction through the Vagus nerve. Postganglionic release in SA node of ACH inhibits depolarization






39. What is the direct cause of edema?






40. What is the only process RBC use to generate ATP?






41. Confirmation of hemoglobin with O2 bound - where affinity is high 1. pH 2. pCO2 3.






42. Valves between the ventricle and the atria to prevent back flow






43. When the valve of a vein fails and back flow occurs; blood not being moved toward the heart






44. Highest blood pressure that occurs during ventricular contraction






45. Vessels where deoxygenated blood from coronary sinus continue to flow into heart






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






47. Essentially 0 mmHg - which results b/c of branching of vessels dissipating pressure to overcome resistance






48. Key proteins for the function of the immune system that are produced and released by B- cells






49. 2 portal systems to know






50. Reservoirs where blood collects from veins







Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?


Let me suggest you:

Browse all subjects

Browse all tests

Most popular tests



Major Subjects

Tests & Exams


AP
CLEP
DSST
GRE
SAT
GMAT

Browse all subjects

Browse all tests

Most popular tests