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. What is the only process RBC use to generate ATP?
Hemoglobin
albumin b/c it provides the bulk of oncotic pressure in blood vessels - preventing edema
Ischemia
glycolysis. RBC have no ETC - FA oxidation - or TCA cycle
2. AV valve between left atrium and left ventricle
Platelet fxn
Internodal tract
bicuspid (mitral) valve
arteries
3. Plasma that lacks clotting proteins
O- since there are no surface antigens for antibodies to bind to...
Sickle cell anemia
1. increase total blood volume by retaining more H2O 2. Contraction of large veins - propelling blood toward the heart
serum
4. Open when threshold is reached causing membrane potential to increase/depolarize; operate slower than Na channels
Systole
basophil
Ca channels
5 phases of cardiac muscle cell contraction
5. 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
Glucose
2 components of antigens
Thrombus
Bundle of His
6. Caused by closure of Ca channels and opening of K channels
Repolarization of nodes
Granulocytes
O- since there are no surface antigens for antibodies to bind to...
Capillaries
7. Precursor to fibrin - which is necessary for blood clotting
fibrinogen
Ca channels
systemic circulation
Temperature or metabolic rate
8. Why is the SA node the primary pacemaker?
Bundle of His
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
tricuspid valve
Erythropoetin
9. Rh factor that follows dominant pattern (Rh+ in heterozygote)
Rh blood group
ventricles
WBC
primary bicarbonate generated from CO2.
10. Flow of blood from the heart to the lungs - pumped by the right side of the heart
macrophage
AV node
bicuspid (mitral) valve
pulmonary circulation
11. Site of exchange btw blood and tissues; smallest vessels that allow one RBC through at a time
capillaries
Right atrium
basophil
Platelet fxn
12. When do Rh antibodies develop?
heart rate
neutrophil
when person that is Rh - is exposed to blood that is Rh+
arteries
13. Universal acceptor
Slow Ca channels
veins
Blood plasma
AB+ since no antibodies are made to any blood type
14. Body's mechanism of preventing bleeding
albumin b/c it provides the bulk of oncotic pressure in blood vessels - preventing edema
diastolic blood pressure
hemostasis
Peripheral resistance
15. Metabolic waste product in breakdown of amino acids
when person that is Rh - is exposed to blood that is Rh+
adipocytes
T- tubules
urea
16. 2 lymphocytes
Hepatic portal vein
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
chylomicrons
B cells and T cells
17. Tissue which the cytoplasm of different cells communicate via gap junctions
Erythropoetin
increase vagal signal and inhibits sympathetic input
Functional syncytium
It is the same - otherwise it would lead to fluid backup
18. Vessels that carry blood back to the heart at low pressure
veins
Ca channels
Primary transportation fo CO2 in the blood
AB+ since no antibodies are made to any blood type
19. Aggregate at site of damage to a blood vessel and form a platelet plug to stop bleeding
5 phases of cardiac muscle cell contraction
atrioventricular valves
Platelet fxn
Tense
20. 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
coronary sinus
O- since there are no surface antigens for antibodies to bind to...
5 phases of cardiac muscle cell contraction
bilirubin
21. Active form of fibrinogen - protein forms a mesh that holds platelet plug together to protect wound - ibrinogen is converted to (blank) by thrombin
hepatic portal system and hypothalamic - hypophosial portal system
fibrin
pulse pressure
Bundle of His
22. Where are RBCs broken down?
arteries
Coronary arteries
Spleen and liver
Rh blood group
23. 2 ways to increase venous return
Immunoglobulins (antibodies)
1. increase total blood volume by retaining more H2O 2. Contraction of large veins - propelling blood toward the heart
bone marrow
Erythrocytes
24. Gap junctions in the cardiac muscle - where depolarization is communicated directly btw cytoplasm of neighboring cardiac cells
Inflammation
Intercalated discs
ventricles
veins
25. 73% of CO2 converted to carbonic acid by carbonic anhydrase - and carbonic acid is converted to bicarbonate - which acts a buffer
basophil
Primary transportation fo CO2 in the blood
resistance
amino acids and glucose
26. 3 substances that can diffuse through intercellular cleft
fibrin
nutrients - wastes - and WBC
Hemoglobin
hypoxia
27. Pass through the capillaries in order to patrol the tissue for invading organisms; only macrophages and neutrophils can squeeze through cleft
Primary transportation fo CO2 in the blood
WBC
bilirubin
Valves of the venous system
28. Flow from the heart to the rest of the body; pumped by the left side of the heart
systemic circulation
CNS decreases vagal signal and sympathetic input increases
veins
systolic blood pressure
29. Bone marrow cells that give rise to RBC and platelets
Capillaries
megakaryocytes
serum
high osmolarity of tissues
30. Number of systole contractions per unit time
CNS decreases vagal signal and sympathetic input increases
heart rate
Blood plasma
Baroreceptors
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. Amount of blood pumped w/ each systolic contraction
bilirubin
Portal systems
Diastole
stroke volume
33. Monocyte that phagocytoses debris and microorganisms - has amoeboid motility - and displays chemotaxis
macrophage
Tense
High since the concentration of plasma proteins has increased due to movement of water
adrenergic tone
34. Region that initiates start of cardiac cycle - which acts as a pacemaker of the heart; has unstable resting potential due to Na leak channels
bicuspid (mitral) valve
SA node
Erythropoetin
nutrients
35. Occurs when increased cardiac output is needed; the postganglionic nerve directly innervates the heart - releasing norepinephrine - increasing heart rate and force of contraction
Relaxed
SA node
1. increase total blood volume by retaining more H2O 2. Contraction of large veins - propelling blood toward the heart
Sympathetic regulation of heart
36. Peptide hormone secreted from the kidneys to increase RBC production in bone marrow
Hemolytic disease of a newborn
Pulmonary and aortic semilunar valves
Erythropoetin
Hemoglobin
37. Buffer in blood. Keeps pH around 7.4
Internodal tract
5 phases of cardiac muscle cell contraction
primary bicarbonate generated from CO2.
AV node
38. Mother has Rh - blood with Rh+ antibodies that attack the babies Rh+ blood
systemic circulation
Hemolytic disease of a newborn
atrioventricular valves
Internodal tract
39. Because the veins have essentially 0 pressure - these valves ensure one - way flow - skeletal muscle contraction encourages flow through veins
AB+ since no antibodies are made to any blood type
Valves of the venous system
diastolic blood pressure
Internodal tract
40. Destroy parasites and are involved in allergic rxns
eosinophil
Temperature or metabolic rate
pulmonary circulation
chylomicrons
41. Neural sympathetic input by postganglionic neuron of norepinephrine innervating arterial smooth muscle
adrenergic tone
capillaries
Primary transportation fo CO2 in the blood
pulmonary circulation
42. Inadequate blood flow - resulting in tissue damage due to shortage of O2 and nutrients - and increase of metabolic waste
Ischemia
adrenergic tone
serum
atria and ventricles
43. 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
Erythrocytes
T- tubules
Internodal tract
pulse pressure
44. 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
macrophage
increased hydrostatic pressure in the capillaries - which increases the fluid that leaks out of the capillaries into the interstitum
Perfusion
Hemoglobin
45. Contraction of the ventricles - where pressure increases rapidly - causing AV valves to close - Marks the beginning of the 'lub' sound
Systole
heart
systemic circulation
O- since there are no surface antigens for antibodies to bind to...
46. As low as pressure gets btw heart beats in arteries
primary bicarbonate generated from CO2.
diastolic blood pressure
Erythropoetin
bicuspid (mitral) valve
47. 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
Na leak channels
eosinophil
Hemoglobin
Fast Na channels
48. Resting membrane potential of -90mV and have long duration action potentials
Cardiac muscle cells
Intercalated discs
nutrients
urea
49. AV valve between right atrium and right ventricle
Valves of the venous system
Blood plasma
varicose veins
tricuspid valve
50. Protein that maintains oncotic pressure in capillaries
albumin
nutrients
Hemolytic disease of a newborn
adipocytes