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. 3 factors that dictate the affinity of hemoglobin for O2






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






3. Glucose - amino acids - and fats






4. 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


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






6. At position 6 - missense mutation substitutes valine for glutamate. valine is hydrophobic - where glutamate was charged. It is an autosomal recessive disease where RBCs accumulated in small vessels - heterozygote for (blank) shows resistance to malar






7. 2 portal systems to know






8. Crosses septum and connects to Purkinje fibers to allow coordinated contraction of ventricles. Key is that is slows transmission across septum to allow ventricles to fully fill before contraction






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






10. Force per unit area exerted by blood on walls of arteries






11. Universal acceptor






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






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






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






15. Allow Na to leak across membrane - causing cell potential to get closer to threshold potential; allow threshold to be reached for Ca channels to open let Ca into the cell






16. Stretching to greater degree of heart muscle causes more forceful contraction; stretching increase occur by increasing fluid volume






17. Caused by closure of Ca channels and opening of K channels






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






19. 3 substances that can diffuse through intercellular cleft






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






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






22. Buffer in blood. Keeps pH around 7.4






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






24. The difference in pressure divided blood flow; controlled by the sympathetic nervous system generating adrenergic tone






25. Body's mechanism of preventing bleeding






26. Fat storage cells of the body






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






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






29. 20% transported stuck to hemoglobin; why increased pCO2 decreases affinity of O2






30. Valves between the large arteries and the ventricles






31. Lipoproteins that enter lacteal vessels of lymphatic system in the intestinal wall






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






33. 73% of CO2 converted to carbonic acid by carbonic anhydrase - and carbonic acid is converted to bicarbonate - which acts a buffer






34. When do semilunar valves close?






35. Have single layer endothelial cells w/ spaces in between cells called intercellular cleft






36. Which is longer - diastole or systole?






37. Amount of blood pumped w/ each systolic contraction






38. 2 lymphocytes






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






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






41. Why is the SA node the primary pacemaker?






42. 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)






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






44. Absorbed in the intestine and packaged in chylomicrons - which enter the lymphatic system - and dumped into the subclavian vein via the thoracic duct; the liver takes fats once in blood - converts them to another lipoprotein and sends them to adipocy






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






46. AV valve between left atrium and left ventricle






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






48. Plasma that lacks clotting proteins






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






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







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