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






2. Breakdown product of the hemogloblin heme group






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






4. Universal acceptor






5. Heart rate *stroke volume= (units)






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






7. Excessive bleeding that results from defective proteins






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






9. Site of exchange btw blood and tissues; smallest vessels that allow one RBC through at a time






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






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






12. Protein in RBC that transport O2 though the blood since O2 is too hydrophobic in plasma; protein has 4 subunits that change confirmation cooperatively depending on the concentration of O2






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






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






15. Phagocytose bacteria resulting in pus; amoeboid motility and chemotaxis






16. Voltage - gated channels that open quickly; open at threshold potential






17. 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






18. 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






19. Tissue which the cytoplasm of different cells communicate via gap junctions






20. AV valve between right atrium and right ventricle






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






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






23. Hematocrit or RBC those compose 35-45% of the blood; cells are non - nucleated and have no organelles. Acquire ATP through glycolysis have biconcave shape to maximize surface area for binding O2






24. Aggregate at site of damage to a blood vessel and form a platelet plug to stop bleeding






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






26. When do semilunar valves close?






27. Maximize entry of Ca into the cell by allowing entry of Ca extracellular environment; leads to contraction of actin - myosin fibers






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






29. Universal donor






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






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






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






33. Osmotic pressure in capillaries due to plasma proteins






34. Glucose - amino acids - and fats






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






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






37. Which is longer - diastole or systole?






38. 55% of whole blood that is composed of electrolytes - lipoproteins - sugars - buffer - and metabolic waste






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






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






41. Flow of blood through a tissue






42. Plasma that lacks clotting proteins






43. 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


44. 3 factors that dictate the affinity of hemoglobin for O2






45. When do Rh antibodies develop?






46. Active form of fibrinogen - protein forms a mesh that holds platelet plug together to protect wound - ibrinogen is converted to (blank) by thrombin






47. Fat storage cells of the body






48. Neutrophil - eosinophil - and basophil






49. Why is the SA node the primary pacemaker?






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







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