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. Where do all components of the blood develop from?
coronary sinus
Repolarization of nodes
bone marrow
Tense
2. Universal donor
venous blood pressure
O- since there are no surface antigens for antibodies to bind to...
Repolarization of nodes
Peripheral resistance
3. Contraction of the ventricles - where pressure increases rapidly - causing AV valves to close - Marks the beginning of the 'lub' sound
AV node
Repolarization of nodes
Systole
heart
4. Pump blood out of the heart at high pressures into arteries
cardiac output (L/min)
ventricles
Fxn of circulatory system
local autoregulation
5. Highest blood pressure that occurs during ventricular contraction
Immunoglobulins (antibodies)
atria
systolic blood pressure
Vagal Signal
6. Body's mechanism of preventing bleeding
hypoxia
Ischemia
hemostasis
Diastole
7. Because the veins have essentially 0 pressure - these valves ensure one - way flow - skeletal muscle contraction encourages flow through veins
Valves of the venous system
Temperature or metabolic rate
Hemolytic disease of a newborn
Fast Na channels
8. Why is the SA node the primary pacemaker?
Platelet fxn
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
Pulmonary and aortic semilunar valves
Bundle of His
9. Ensure the one - way flow through the circulatory system
Vagal Signal
valves
Peripheral resistance
ventricles
10. 3 substances that can diffuse through intercellular cleft
valves
Pulmonary and aortic semilunar valves
nutrients - wastes - and WBC
Rh blood group
11. Path where impulse travels from SA to AV node
oncotic pressure
Internodal tract
Lipoproteins
Vagal Signal
12. Maximize entry of Ca into the cell by allowing entry of Ca extracellular environment; leads to contraction of actin - myosin fibers
megakaryocytes
macrophage
Coronary arteries
T- tubules
13. 20% transported stuck to hemoglobin; why increased pCO2 decreases affinity of O2
when person that is Rh - is exposed to blood that is Rh+
Intercalated discs
oncotic pressure
Secondary transportation of CO2 in the blood
14. AV valve between right atrium and right ventricle
heart
tricuspid valve
Systole
Ohm's law
15. 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
amino acids and glucose
nutrients
Sickle cell anemia
adipocytes
16. Confirmation of hemoglobin with no O2 bound - so it has low affinity
Baroreceptors
Perfusion
Tense
Granulocytes
17. 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
Na leak channels
atria
eosinophil
18. Is cardiac output the same or different btw the two ventricles?
Capillaries
Blood plasma
systemic arterial blood pressure
It is the same - otherwise it would lead to fluid backup
19. Resting membrane potential of -90mV and have long duration action potentials
Cardiac muscle cells
valves
Vagal Signal
heart rate
20. 2 ways to increase venous return
Hemoglobin
Slow Ca channels
1. increase total blood volume by retaining more H2O 2. Contraction of large veins - propelling blood toward the heart
nutrients
21. When do semilunar valves close?
It is the same - otherwise it would lead to fluid backup
primary bicarbonate generated from CO2.
Arterial pressure=ventricular pressure
diastolic blood pressure
22. 3 factors that dictate the affinity of hemoglobin for O2
Relaxed
Temperature or metabolic rate
bilirubin
glycolysis. RBC have no ETC - FA oxidation - or TCA cycle
23. 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
Rh blood group
Third transportation of CO2 in the blood
albumin
megakaryocytes
24. Tissue which the cytoplasm of different cells communicate via gap junctions
local autoregulation
Functional syncytium
veins
Primary transportation fo CO2 in the blood
25. Control of by ANS of rate of contraction through the Vagus nerve. Postganglionic release in SA node of ACH inhibits depolarization
Vagal Signal
Granulocytes
nutrients - wastes - and WBC
1. increase total blood volume by retaining more H2O 2. Contraction of large veins - propelling blood toward the heart
26. The difference in pressure divided blood flow; controlled by the sympathetic nervous system generating adrenergic tone
Peripheral resistance
5 phases of cardiac muscle cell contraction
Secondary transportation of CO2 in the blood
adrenergic tone
27. Aggregate at site of damage to a blood vessel and form a platelet plug to stop bleeding
Na leak channels
T- tubules
Relaxed
Platelet fxn
28. Destroy parasites and are involved in allergic rxns
Arterial pressure=ventricular pressure
Hepatic portal vein
hemostasis
eosinophil
29. Absorbed by the GI tract and brought to the liver via the hepatic portal vein - where they are stored in the liver and enter the blood stream when needed
nutrients - wastes - and WBC
Functional syncytium
amino acids and glucose
fats
30. Open when threshold is reached causing membrane potential to increase/depolarize; operate slower than Na channels
urea
Secondary transportation of CO2 in the blood
Valves of the venous system
Ca channels
31. Muscular pump that forces blood through series of branching vessels
Slow Ca channels
heart
Erythrocytes
urea
32. Inadequate blood flow - resulting in tissue damage due to shortage of O2 and nutrients - and increase of metabolic waste
when person that is Rh - is exposed to blood that is Rh+
Ischemia
Capillaries
chylomicrons
33. Plasma that lacks clotting proteins
serum
B cells and T cells
Hemolytic disease of a newborn
Ca channels
34. Peptide hormone secreted from the kidneys to increase RBC production in bone marrow
atria
Hemolytic disease of a newborn
Erythropoetin
veins
35. When do Rh antibodies develop?
when person that is Rh - is exposed to blood that is Rh+
Spleen and liver
tricuspid valve
Arterial pressure=ventricular pressure
36. Valves between the large arteries and the ventricles
adrenergic tone
Pulmonary and aortic semilunar valves
systemic arterial blood pressure
Right atrium
37. Buffer in blood. Keeps pH around 7.4
Cardiac muscle cells
adipocytes
primary bicarbonate generated from CO2.
Erythropoetin
38. Fat storage cells of the body
adipocytes
bicuspid (mitral) valve
valves
Secondary transportation of CO2 in the blood
39. Rh factor that follows dominant pattern (Rh+ in heterozygote)
Valves of the venous system
Rh blood group
Arterial pressure=ventricular pressure
Waste
40. Where blood passes through 2 sets of capillaries before returning to the heart; Evolved as direct transport routes
Vagal Signal
Erythrocytes
Pulmonary and aortic semilunar valves
Portal systems
41. Flow of blood through a tissue
Granulocytes
Perfusion
macrophage
bicuspid (mitral) valve
42. Filling of the ventricles by squeezing of the atria - marks the beginning of the 'dub' sound
Diastole
Inflammation
Cardiac muscle cells
5 phases of cardiac muscle cell contraction
43. Adequate circulation - but O2 supply is reduced (no build up waste products or loss of nutrients)
hypoxia
Erythrocytes
venous blood pressure
bone marrow
44. Amount of blood pumped w/ each systolic contraction
Cardiac muscle cells
high osmolarity of tissues
Fast Na channels
stroke volume
45. Number of systole contractions per unit time
bilirubin
fibrin
Peripheral resistance
heart rate
46. 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
47. Metabolic waste product in breakdown of amino acids
Intercalated discs
Baroreceptors
urea
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
48. 2 portal systems to know
Diastole is longer
hepatic portal system and hypothalamic - hypophosial portal system
valves
Thrombus
49. Key proteins for the function of the immune system that are produced and released by B- cells
atria
Vagal Signal
hepatic portal system and hypothalamic - hypophosial portal system
Immunoglobulins (antibodies)
50. Valves between the ventricle and the atria to prevent back flow
Perfusion
atrioventricular valves
Erythrocytes
Functional syncytium