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






2. Breakdown product of the hemogloblin heme group






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






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






5. Excessive bleeding that results from defective proteins






6. Highest blood pressure that occurs during ventricular contraction






7. 55% of whole blood that is composed of electrolytes - lipoproteins - sugars - buffer - and metabolic waste






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






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






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






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






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






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






14. When do Rh antibodies develop?






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






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






17. Pool of deoxygenated blood at low pressure - which collects blood from coronary veins - Only deoxygenated blood to not enter the right atrium via the vena cava






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






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






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






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






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






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






24. Buffer in blood. Keeps pH around 7.4






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






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






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






28. 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






29. Osmotic pressure in capillaries due to plasma proteins






30. Body's mechanism of preventing bleeding






31. 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


32. Purpose of erythrocytes?






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






34. 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






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






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






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






38. Amount of blood pumped w/ each systolic contraction






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






40. Where are RBCs broken down?






41. 3 substances that can diffuse through intercellular cleft






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






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






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






45. Neural sympathetic input by postganglionic neuron of norepinephrine innervating arterial smooth muscle






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






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






48. AV valve between right atrium and right ventricle






49. Vessels that carry blood back to the heart at low pressure






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







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