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. Protein that maintains oncotic pressure in capillaries
increased hydrostatic pressure in the capillaries - which increases the fluid that leaks out of the capillaries into the interstitum
albumin
Internodal tract
glycolysis. RBC have no ETC - FA oxidation - or TCA cycle
2. Which is longer - diastole or systole?
heart rate
High since the concentration of plasma proteins has increased due to movement of water
Diastole is longer
Thrombus
3. Resting membrane potential of -90mV and have long duration action potentials
Sickle cell anemia
Cardiac muscle cells
Baroreceptors
Relaxed
4. Amount of blood pumped w/ each systolic contraction
venous return
stroke volume
Erythropoetin
Baroreceptors
5. Phagocytose bacteria resulting in pus; amoeboid motility and chemotaxis
neutrophil
chylomicrons
arteries
Na leak channels
6. Site of exchange btw blood and tissues; smallest vessels that allow one RBC through at a time
capillaries
pulmonary circulation
increase vagal signal and inhibits sympathetic input
Hepatic portal vein
7. The principle sugar in blood that maintains a relatively constant concentration for adequate nutrition
Temperature or metabolic rate
Sickle cell anemia
Glucose
increased hydrostatic pressure in the capillaries - which increases the fluid that leaks out of the capillaries into the interstitum
8. Maximize entry of Ca into the cell by allowing entry of Ca extracellular environment; leads to contraction of actin - myosin fibers
It has the most Na leak channels - allowing to reach threshold potential first; all other nodes leak - but rate at as quick of a rate
Granulocytes
Immunoglobulins (antibodies)
T- tubules
9. Gap junctions in the cardiac muscle - where depolarization is communicated directly btw cytoplasm of neighboring cardiac cells
Intercalated discs
glycolysis. RBC have no ETC - FA oxidation - or TCA cycle
Systole
atrioventricular valves
10. Breakdown product of the hemogloblin heme group
Relaxed
megakaryocytes
capillaries
bilirubin
11. AV valve between left atrium and left ventricle
primary bicarbonate generated from CO2.
WBC
bicuspid (mitral) valve
Tense
12. Buffer in blood. Keeps pH around 7.4
Tense
hypoxia
primary bicarbonate generated from CO2.
atria and ventricles
13. 73% of CO2 converted to carbonic acid by carbonic anhydrase - and carbonic acid is converted to bicarbonate - which acts a buffer
heart
Baroreceptors
Primary transportation fo CO2 in the blood
Ca channels
14. Capillaries dilate - increasing the cleft size - which allows more H2O to move through to tissues
Portal systems
Granulocytes
Inflammation
Fast Na channels
15. Flow of blood through a tissue
Lipoproteins
Diastole
Perfusion
Hepatic portal vein
16. Why is the SA node the primary pacemaker?
Na leak channels
Inflammation
atrioventricular valves
It has the most Na leak channels - allowing to reach threshold potential first; all other nodes leak - but rate at as quick of a rate
17. Rh factor that follows dominant pattern (Rh+ in heterozygote)
Waste
nutrients - wastes - and WBC
macrophage
Rh blood group
18. Receives deoxygenated blood from systemic circulation (superior and inferior vena cava)
2 components of antigens
Blood plasma
serum
Right atrium
19. 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
oncotic pressure
coronary sinus
Coronary arteries
adipocytes
20. Metabolic waste product in breakdown of amino acids
urea
Pulmonary and aortic semilunar valves
bilirubin
systemic arterial blood pressure
21. Bone marrow cells that give rise to RBC and platelets
oncotic pressure
coronary sinus
when person that is Rh - is exposed to blood that is Rh+
megakaryocytes
22. Body's mechanism of preventing bleeding
Systole
Cardiac muscle cells
hypoxia
hemostasis
23. Flow of blood from the heart to the lungs - pumped by the right side of the heart
O- since there are no surface antigens for antibodies to bind to...
resistance
pulmonary circulation
diastolic blood pressure
24. Force per unit area exerted by blood on walls of arteries
Sympathetic regulation of heart
Cardiac muscle cells
Na leak channels
systemic arterial blood pressure
25. 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
26. Adequate circulation - but O2 supply is reduced (no build up waste products or loss of nutrients)
hypoxia
Lipoproteins
Bundle of His
It is the same - otherwise it would lead to fluid backup
27. Number of systole contractions per unit time
macrophage
Relaxed
heart rate
serum
28. As low as pressure gets btw heart beats in arteries
Systole
Sympathetic regulation of heart
resistance
diastolic blood pressure
29. Caused by closure of Ca channels and opening of K channels
adipocytes
neutrophil
resistance
Repolarization of nodes
30. 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)
Temperature or metabolic rate
bilirubin
Inflammation
Waste
31. Confirmation of hemoglobin with O2 bound - where affinity is high 1. pH 2. pCO2 3.
Relaxed
Spleen and liver
Hemolytic disease of a newborn
megakaryocytes
32. 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
hemostasis
adrenergic tone
fats
Slow Ca channels
33. The difference in pressure divided blood flow; controlled by the sympathetic nervous system generating adrenergic tone
Blood plasma
Waste
Functional syncytium
Peripheral resistance
34. Active form of fibrinogen - protein forms a mesh that holds platelet plug together to protect wound - ibrinogen is converted to (blank) by thrombin
glycolysis. RBC have no ETC - FA oxidation - or TCA cycle
fibrin
CNS decreases vagal signal and sympathetic input increases
stroke volume
35. Universal acceptor
Third transportation of CO2 in the blood
AB+ since no antibodies are made to any blood type
Arterial pressure=ventricular pressure
Diastole
36. Confirmation of hemoglobin with no O2 bound - so it has low affinity
Cardiac muscle cells
Tense
primary bicarbonate generated from CO2.
Ischemia
37. Pass through the capillaries in order to patrol the tissue for invading organisms; only macrophages and neutrophils can squeeze through cleft
WBC
amino acids and glucose
B cells and T cells
Secondary transportation of CO2 in the blood
38. At the end of the capillary - is the osmotic pressure high or low?
resistance
High since the concentration of plasma proteins has increased due to movement of water
Frank - Starling Effect
Temperature or metabolic rate
39. Control of by ANS of rate of contraction through the Vagus nerve. Postganglionic release in SA node of ACH inhibits depolarization
Secondary transportation of CO2 in the blood
Vagal Signal
1. increase total blood volume by retaining more H2O 2. Contraction of large veins - propelling blood toward the heart
heart rate
40. Plasma that lacks clotting proteins
serum
systolic blood pressure
Coronary arteries
High since the concentration of plasma proteins has increased due to movement of water
41. Open when threshold is reached causing membrane potential to increase/depolarize; operate slower than Na channels
Ca channels
Third transportation of CO2 in the blood
High since the concentration of plasma proteins has increased due to movement of water
to transport O2 to tissues and CO2 to the lungs
42. 20% transported stuck to hemoglobin; why increased pCO2 decreases affinity of O2
Internodal tract
stroke volume
Secondary transportation of CO2 in the blood
amino acids and glucose
43. Vessels that carry blood back to the heart at low pressure
heart
albumin
increased hydrostatic pressure in the capillaries - which increases the fluid that leaks out of the capillaries into the interstitum
veins
44. Connected to SA node via internodal tract - and passes signal to Common bundle of His to contract ventricles
nutrients - wastes - and WBC
Erythrocytes
high osmolarity of tissues
AV node
45. Where blood passes through 2 sets of capillaries before returning to the heart; Evolved as direct transport routes
tricuspid valve
Portal systems
Ca channels
Diastole is longer
46. 3 factors that dictate the affinity of hemoglobin for O2
increased hydrostatic pressure in the capillaries - which increases the fluid that leaks out of the capillaries into the interstitum
Temperature or metabolic rate
cardiac output (L/min)
pulmonary circulation
47. What is the most important plasma protein in the body? Why?
Third transportation of CO2 in the blood
Sickle cell anemia
albumin b/c it provides the bulk of oncotic pressure in blood vessels - preventing edema
B cells and T cells
48. First branches from the aorta that provide the heart's blood supply
Internodal tract
veins
Coronary arteries
serum
49. What is the direct cause of edema?
increase vagal signal and inhibits sympathetic input
increased hydrostatic pressure in the capillaries - which increases the fluid that leaks out of the capillaries into the interstitum
Diastole
Ohm's law
50. Voltage - gated channels that open quickly; open at threshold potential
Fast Na channels
hypoxia
Thrombus
Blood plasma