SUBJECTS
|
BROWSE
|
CAREER CENTER
|
POPULAR
|
JOIN
|
LOGIN
Business Skills
|
Soft Skills
|
Basic Literacy
|
Certifications
About
|
Help
|
Privacy
|
Terms
|
Email
Search
Test your basic knowledge |
MCAT Biology Circulatory System
Start Test
Study First
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. Excessive bleeding that results from defective proteins
varicose veins
capillaries
hemophilia
Vagal Signal
2. Muscular pump that forces blood through series of branching vessels
urea
heart
Repolarization of nodes
stroke volume
3. 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
Lipoproteins
capillaries
SA node
coronary sinus
4. Store and release histamine and are involved in allergic rxns
Coronary veins
heart rate
adipocytes
basophil
5. Gap junctions in the cardiac muscle - where depolarization is communicated directly btw cytoplasm of neighboring cardiac cells
Waste
Tense
Intercalated discs
Glucose
6. The principle sugar in blood that maintains a relatively constant concentration for adequate nutrition
O- since there are no surface antigens for antibodies to bind to...
arteries
Glucose
hepatic portal system and hypothalamic - hypophosial portal system
7. Reservoirs where blood collects from veins
Systole
nutrients - wastes - and WBC
atria
Bundle of His
8. Open when threshold is reached causing membrane potential to increase/depolarize; operate slower than Na channels
Na leak channels
Ca channels
Platelet fxn
venous return
9. CO2 is soluble in H2O - and thus some is dissolved and carried to lungs and tissues in plasma - O2 is not soluble in plasma at all
when person that is Rh - is exposed to blood that is Rh+
Systole
Third transportation of CO2 in the blood
atria and ventricles
10. Vessels where deoxygenated blood from coronary sinus continue to flow into heart
2 components of antigens
bilirubin
albumin b/c it provides the bulk of oncotic pressure in blood vessels - preventing edema
Coronary veins
11. Contraction of the ventricles - where pressure increases rapidly - causing AV valves to close - Marks the beginning of the 'lub' sound
Systole
systemic arterial blood pressure
atria
Granulocytes
12. 2 ways to increase venous return
Vagal Signal
T- tubules
1. increase total blood volume by retaining more H2O 2. Contraction of large veins - propelling blood toward the heart
Waste
13. As low as pressure gets btw heart beats in arteries
diastolic blood pressure
Granulocytes
Temperature or metabolic rate
systemic arterial blood pressure
14. Flow of blood through a tissue
arteries
fibrin
Perfusion
increased hydrostatic pressure in the capillaries - which increases the fluid that leaks out of the capillaries into the interstitum
15. Voltage - gated channels that open quickly; open at threshold potential
high osmolarity of tissues
Spleen and liver
Fast Na channels
It is the same - otherwise it would lead to fluid backup
16. Flow of blood from the heart to the lungs - pumped by the right side of the heart
Ca channels
systemic circulation
pulmonary circulation
serum
17. Caused by closure of Ca channels and opening of K channels
veins
heart rate
Sympathetic regulation of heart
Repolarization of nodes
18. Adequate circulation - but O2 supply is reduced (no build up waste products or loss of nutrients)
glycolysis. RBC have no ETC - FA oxidation - or TCA cycle
AV node
Arterial pressure=ventricular pressure
hypoxia
19. 3 substances that can diffuse through intercellular cleft
serum
hepatic portal system and hypothalamic - hypophosial portal system
macrophage
nutrients - wastes - and WBC
20. Confirmation of hemoglobin with no O2 bound - so it has low affinity
hypoxia
Tense
Pulmonary and aortic semilunar valves
adrenergic tone
21. Key proteins for the function of the immune system that are produced and released by B- cells
Ischemia
Erythropoetin
Baroreceptors
Immunoglobulins (antibodies)
22. Osmotic pressure in capillaries due to plasma proteins
venous return
Third transportation of CO2 in the blood
fibrin
oncotic pressure
23. Lipoproteins that enter lacteal vessels of lymphatic system in the intestinal wall
Valves of the venous system
chylomicrons
It is the same - otherwise it would lead to fluid backup
Na leak channels
24. Universal donor
O- since there are no surface antigens for antibodies to bind to...
Secondary transportation of CO2 in the blood
1. increase total blood volume by retaining more H2O 2. Contraction of large veins - propelling blood toward the heart
Rh blood group
25. At the end of the capillary - is the osmotic pressure high or low?
varicose veins
High since the concentration of plasma proteins has increased due to movement of water
Blood plasma
bicuspid (mitral) valve
26. Universal acceptor
AB+ since no antibodies are made to any blood type
resistance
systemic arterial blood pressure
macrophage
27. Connects the two capillary beds of the intestine and the liver
albumin
T- tubules
Hepatic portal vein
urea
28. Neutrophil - eosinophil - and basophil
diastolic blood pressure
Peripheral resistance
cardiac output (L/min)
Granulocytes
29. Protein that maintains oncotic pressure in capillaries
Relaxed
albumin
T- tubules
systemic circulation
30. Peptide hormone secreted from the kidneys to increase RBC production in bone marrow
Coronary arteries
Erythropoetin
glycolysis. RBC have no ETC - FA oxidation - or TCA cycle
stroke volume
31. 2 lymphocytes
Lipoproteins
to transport O2 to tissues and CO2 to the lungs
B cells and T cells
T- tubules
32. Force per unit area exerted by blood on walls of arteries
fibrinogen
systemic arterial blood pressure
nutrients - wastes - and WBC
Tense
33. Inadequate blood flow - resulting in tissue damage due to shortage of O2 and nutrients - and increase of metabolic waste
Spleen and liver
Ischemia
primary bicarbonate generated from CO2.
resistance
34. Aggregate at site of damage to a blood vessel and form a platelet plug to stop bleeding
Capillaries
Platelet fxn
fibrin
Erythropoetin
35. Mother has Rh - blood with Rh+ antibodies that attack the babies Rh+ blood
2 components of antigens
Hemolytic disease of a newborn
Fast Na channels
Primary transportation fo CO2 in the blood
36. Buffer in blood. Keeps pH around 7.4
chylomicrons
primary bicarbonate generated from CO2.
pulmonary circulation
albumin b/c it provides the bulk of oncotic pressure in blood vessels - preventing edema
37. Vessels that carry blood away from the heart at high pressure
arteries
eosinophil
bone marrow
Tense
38. Filling of the ventricles by squeezing of the atria - marks the beginning of the 'dub' sound
Primary transportation fo CO2 in the blood
Peripheral resistance
Diastole
Coronary arteries
39. Heart rate *stroke volume= (units)
serum
cardiac output (L/min)
eosinophil
hepatic portal system and hypothalamic - hypophosial portal system
40. 73% of CO2 converted to carbonic acid by carbonic anhydrase - and carbonic acid is converted to bicarbonate - which acts a buffer
Primary transportation fo CO2 in the blood
cardiac output (L/min)
fibrin
eosinophil
41. Large particles consisting of fats - cholesterol - and carrier proteins; transport lipids through the blood stream
Lipoproteins
nutrients
Sympathetic regulation of heart
T- tubules
42. Monocyte that phagocytoses debris and microorganisms - has amoeboid motility - and displays chemotaxis
atria
Glucose
macrophage
Hemolytic disease of a newborn
43. Precursor to fibrin - which is necessary for blood clotting
Tense
Perfusion
systemic arterial blood pressure
fibrinogen
44. Glucose - amino acids - and fats
Primary transportation fo CO2 in the blood
nutrients
heart
heart rate
45. Flow from the heart to the rest of the body; pumped by the left side of the heart
AB+ since no antibodies are made to any blood type
ventricles
5 phases of cardiac muscle cell contraction
systemic circulation
46. What causes tendency of water flow out of blood?
albumin b/c it provides the bulk of oncotic pressure in blood vessels - preventing edema
Repolarization of nodes
high osmolarity of tissues
chylomicrons
47. Resting membrane potential of -90mV and have long duration action potentials
hypoxia
Cardiac muscle cells
increased hydrostatic pressure in the capillaries - which increases the fluid that leaks out of the capillaries into the interstitum
5 phases of cardiac muscle cell contraction
48. Site of exchange btw blood and tissues; smallest vessels that allow one RBC through at a time
fibrin
ABO blood group
capillaries
AB+ since no antibodies are made to any blood type
49. Phagocytose bacteria resulting in pus; amoeboid motility and chemotaxis
Intercalated discs
neutrophil
Bundle of His
CNS decreases vagal signal and sympathetic input increases
50. What is the direct cause of edema?
systemic circulation
increased hydrostatic pressure in the capillaries - which increases the fluid that leaks out of the capillaries into the interstitum
Fxn of circulatory system
pulmonary circulation