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. Vessels where deoxygenated blood from coronary sinus continue to flow into heart
Coronary veins
Glucose
atrioventricular valves
Portal systems
2. Where do all components of the blood develop from?
bone marrow
CNS decreases vagal signal and sympathetic input increases
Valves of the venous system
when person that is Rh - is exposed to blood that is Rh+
3. Pump blood out of the heart at high pressures into arteries
high osmolarity of tissues
atria
ventricles
Glucose
4. At the end of the capillary - is the osmotic pressure high or low?
Frank - Starling Effect
Ischemia
High since the concentration of plasma proteins has increased due to movement of water
Peripheral resistance
5. Transportation of blood though the body and exchange of material btw blood and tissues
Fxn of circulatory system
Rh blood group
T- tubules
Repolarization of nodes
6. Flow of blood from the heart to the lungs - pumped by the right side of the heart
pulmonary circulation
eosinophil
Waste
ventricles
7. AV valve between right atrium and right ventricle
ABO blood group
tricuspid valve
venous blood pressure
atria and ventricles
8. When the valve of a vein fails and back flow occurs; blood not being moved toward the heart
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
varicose veins
when person that is Rh - is exposed to blood that is Rh+
Frank - Starling Effect
9. Confirmation of hemoglobin with no O2 bound - so it has low affinity
Tense
oncotic pressure
to transport O2 to tissues and CO2 to the lungs
Arterial pressure=ventricular pressure
10. 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
fibrinogen
capillaries
Erythropoetin
11. 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
Arterial pressure=ventricular pressure
Sympathetic regulation of heart
Bundle of His
Hemoglobin
12. Force per unit area exerted by blood on walls of arteries
AB+ since no antibodies are made to any blood type
Temperature or metabolic rate
Glucose
systemic arterial blood pressure
13. Precursor to fibrin - which is necessary for blood clotting
local autoregulation
amino acids and glucose
fibrinogen
Platelet fxn
14. Mother has Rh - blood with Rh+ antibodies that attack the babies Rh+ blood
local autoregulation
Hemolytic disease of a newborn
stroke volume
Glucose
15. Confirmation of hemoglobin with O2 bound - where affinity is high 1. pH 2. pCO2 3.
pulmonary circulation
It is the same - otherwise it would lead to fluid backup
capillaries
Relaxed
16. When do semilunar valves close?
Ohm's law
Relaxed
hypoxia
Arterial pressure=ventricular pressure
17. The principle sugar in blood that maintains a relatively constant concentration for adequate nutrition
Glucose
Fast Na channels
Hemoglobin
Coronary arteries
18. Excessive bleeding that results from defective proteins
hemophilia
hepatic portal system and hypothalamic - hypophosial portal system
Peripheral resistance
nutrients
19. Destroy parasites and are involved in allergic rxns
Coronary veins
Granulocytes
eosinophil
hypoxia
20. Body's mechanism of preventing bleeding
nutrients
hemostasis
Fxn of circulatory system
oncotic pressure
21. 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
Baroreceptors
Bundle of His
Slow Ca channels
primary bicarbonate generated from CO2.
22. Number of systole contractions per unit time
Tense
venous blood pressure
heart rate
Temperature or metabolic rate
23. Caused by closure of Ca channels and opening of K channels
when person that is Rh - is exposed to blood that is Rh+
Thrombus
CNS decreases vagal signal and sympathetic input increases
Repolarization of nodes
24. Request by tissues to increase blood flow - where build up of metabolic waste causes arterioles to dialate
local autoregulation
systemic circulation
bone marrow
Relaxed
25. Amount of blood pumped w/ each systolic contraction
Fast Na channels
stroke volume
Repolarization of nodes
when person that is Rh - is exposed to blood that is Rh+
26. 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
atria
capillaries
megakaryocytes
27. Protein that maintains oncotic pressure in capillaries
local autoregulation
Immunoglobulins (antibodies)
Hemoglobin
albumin
28. AV valve between left atrium and left ventricle
SA node
bicuspid (mitral) valve
atria
heart
29. Receives deoxygenated blood from systemic circulation (superior and inferior vena cava)
High since the concentration of plasma proteins has increased due to movement of water
It is the same - otherwise it would lead to fluid backup
Right atrium
capillaries
30. Occurs when increased cardiac output is needed; the postganglionic nerve directly innervates the heart - releasing norepinephrine - increasing heart rate and force of contraction
Frank - Starling Effect
Sympathetic regulation of heart
Immunoglobulins (antibodies)
1. increase total blood volume by retaining more H2O 2. Contraction of large veins - propelling blood toward the heart
31. Return of blood to the heart by the vena cava - where increased venous return causes increased stretching of the muscle (increases stroke volume)
Coronary arteries
Ohm's law
Coronary veins
venous return
32. Because the veins have essentially 0 pressure - these valves ensure one - way flow - skeletal muscle contraction encourages flow through veins
primary bicarbonate generated from CO2.
serum
Valves of the venous system
Frank - Starling Effect
33. Resting membrane potential of -90mV and have long duration action potentials
atria
Cardiac muscle cells
adrenergic tone
oncotic pressure
34. Glycoproteins that are coded for by 3 alleles (A - B - i)
Erythrocytes
albumin
hemophilia
ABO blood group
35. 55% of whole blood that is composed of electrolytes - lipoproteins - sugars - buffer - and metabolic waste
Ohm's law
nutrients
Blood plasma
high osmolarity of tissues
36. Aggregate at site of damage to a blood vessel and form a platelet plug to stop bleeding
oncotic pressure
Secondary transportation of CO2 in the blood
Platelet fxn
Erythrocytes
37. 3 factors that dictate the affinity of hemoglobin for O2
Temperature or metabolic rate
Primary transportation fo CO2 in the blood
Ca channels
atria and ventricles
38. Purpose of erythrocytes?
basophil
to transport O2 to tissues and CO2 to the lungs
capillaries
Frank - Starling Effect
39. 2 portal systems to know
heart rate
Peripheral resistance
fibrinogen
hepatic portal system and hypothalamic - hypophosial portal system
40. 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
capillaries
coronary sinus
macrophage
resistance
41. Valves between the ventricle and the atria to prevent back flow
atrioventricular valves
Tense
Capillaries
2 components of antigens
42. Path where impulse travels from SA to AV node
Internodal tract
varicose veins
AB+ since no antibodies are made to any blood type
atrioventricular valves
43. 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)
Rh blood group
high osmolarity of tissues
Waste
stroke volume
44. Voltage - gated channels that stay open longer than Na channels and open later responsible for the plateau phase of cardiac muscle contraction
Na leak channels
Slow Ca channels
Valves of the venous system
valves
45. Open when threshold is reached causing membrane potential to increase/depolarize; operate slower than Na channels
SA node
It is the same - otherwise it would lead to fluid backup
fibrin
Ca channels
46. Maximize entry of Ca into the cell by allowing entry of Ca extracellular environment; leads to contraction of actin - myosin fibers
fibrin
cardiac output (L/min)
T- tubules
Primary transportation fo CO2 in the blood
47. Stretching to greater degree of heart muscle causes more forceful contraction; stretching increase occur by increasing fluid volume
Frank - Starling Effect
Hemoglobin
nutrients - wastes - and WBC
adrenergic tone
48. Ensure the one - way flow through the circulatory system
valves
capillaries
Tense
Temperature or metabolic rate
49. Rh factor that follows dominant pattern (Rh+ in heterozygote)
high osmolarity of tissues
Rh blood group
Ischemia
Frank - Starling Effect
50. Highest blood pressure that occurs during ventricular contraction
fibrinogen
atria and ventricles
adipocytes
systolic blood pressure
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
Certifications
CISSP go to https://www.isc2.org/
PMP
ITIL
RHCE
MCTS
More...
IT Skills
Android Programming
Data Modeling
Objective C Programming
Basic Python Programming
Adobe Illustrator
More...
Business Skills
Advertising Techniques
Business Accounting Basics
Business Strategy
Human Resource Management
Marketing Basics
More...
Soft Skills
Body Language
People Skills
Public Speaking
Persuasion
Job Hunting And Resumes
More...
Vocabulary
GRE Vocab
SAT Vocab
TOEFL Essential Vocab
Basic English Words For All
Global Words You Should Know
Business English
More...
Languages
AP German Vocab
AP Latin Vocab
SAT Subject Test: French
Italian Survival
Norwegian Survival
More...
Engineering
Audio Engineering
Computer Science Engineering
Aerospace Engineering
Chemical Engineering
Structural Engineering
More...
Health Sciences
Basic Nursing Skills
Health Science Language Fundamentals
Veterinary Technology Medical Language
Cardiology
Clinical Surgery
More...
English
Grammar Fundamentals
Literary And Rhetorical Vocab
Elements Of Style Vocab
Introduction To English Major
Complete Advanced Sentences
Literature
Homonyms
More...
Math
Algebra Formulas
Basic Arithmetic: Measurements
Metric Conversions
Geometric Properties
Important Math Facts
Number Sense Vocab
Business Math
More...
Other Major Subjects
Science
Economics
History
Law
Performing-arts
Cooking
Logic & Reasoning
Trivia
Browse all subjects
Browse all tests
Most popular tests