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






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






3. Reservoirs where blood collects from veins






4. Adequate circulation - but O2 supply is reduced (no build up waste products or loss of nutrients)






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






6. 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






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






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






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






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






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






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






13. 2 ways to increase venous return






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






15. Body's mechanism of preventing bleeding






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






17. 3 factors that dictate the affinity of hemoglobin for O2






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






19. Plasma that lacks clotting proteins






20. Buffer in blood. Keeps pH around 7.4






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






22. Osmotic pressure in capillaries due to plasma proteins






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






24. 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






25. Response by CNS when blood pressure is too low






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






27. Protein that maintains oncotic pressure in capillaries






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






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






30. Breakdown product of the hemogloblin heme group






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






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






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






34. ABO blood group and Rh blood group






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






36. 2 chambers of the heart






37. Receptors in the carotid arteries and aortic arch that notify CNS if blood pressure is high or low






38. Why is the SA node the primary pacemaker?






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






40. What is the direct cause of edema?






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






42. 3 substances that can diffuse through intercellular cleft






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






44. When do semilunar valves close?






45. 2 portal systems to know






46. 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






47. Glucose - amino acids - and fats






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






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






50. Pump blood out of the heart at high pressures into 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