Unit 1: 1 & 2 Quiz Questions

Question 1

Plasma is closest in composition to
- sterile water
- urine
- interstitial fluid
- CSF
- isotonic saline solution

Answer 1

interstitial fluid

Question 2

A person who has a low blood volume is said to be
- normovolemic
- hypovolemic
- isovolumic
- hypervolemic
- antivolemic

Answer 2

hypovolemic

Question 3

Which organ secretes most of the plasma proteins?
- brain
- kidney
- heart
- liver
- pancreas

Answer 3

liver

Question 4

Antibodies are which type of plasma protein?
- fibrinogen
- metalloprotein
- immunoglobulin
- steroid-binding protein
- apolipoprotein

Answer 4

immunoglobulin

Question 5

The level of erythropoietin in the blood would rise due to all of the following except:
- when blood flow to kidney is disrupted
- anemia
- high altitude
- as a consequence of hemorrhage
- periods of fasting

Answer 5

periods of fasting

Question 6

Which of the following statements is true about hemoglobin?
- Each hemoglobin molecule can carry four oxygen molecules
- All that is needed to bind oxygen is a molecule of heme
- Each hemoglobin molecule is made up of one alpha and one beta chain of polypeptide
-Hemoglobin can only bind oxygen

Answer 6

Each hemoglobin molecule can carry four oxygen molecules

Question 7

People with type AB blood are considered the “universal recipient” for transplant because
- their blood is plentiful in A and B agglutinins
- they usually have very strong immune systems
- their blood cells lack A and B antigens
- they are usually Rh negative
- their blood lacks A and B agglutinins

Answer 7

their blood lacks A and B agglutinins

Question 8

Megakaryocytes are the source of _
- monocytes
- RBCs
- lymphocytes
- platelets

Answer 8

platelets

Question 9

The conversion of fibrinogen to fibrin is catalyzed by the enzyme
- thrombin
- fibrinogen-converting enzyme
- plasmin
- factor VIII
- prothrombinase

Answer 9

thrombin

Question 10

Non-specific immunity, such as phagocytosis, is a function of which blood cells?
- basophils and eosinophils
- lymphocytes
- lymphocytes and monocytes
- neutrophils, eosinophils, and monocytes
- platelets

Answer 10

neutrophils, eosinophils, and monocytes

Question 11

Abnormally slow depolarization of the ventricles would most change the shape of the _ in an ECG tracing
- QRX complex
- R-T interval
- P-R interval
- P wave
- T wave

Answer 11

QRS complex

Question 12

Analysis of the electrocardiogram can reveal all of the following except:
- the effect of drugs and poisons
- the duration of the ventricular action potential
- stroke volume
- the condition of the conducting system
- heart rate

Answer 12

stroke volume

Question 13

During the plateau phase of the cardiac action potential, which ion is entering the cardiac muscle cell?
- potassium
- calcium
- oxygen
- sodium

Answer 13

calcium

Question 14

The first heart sound (“lubb”) is associated with
- atrial systole
- opening of the atrioventricular valves
- closing of the semilunar valves
- opening of the semilunar valves
- closing of the atrioventricular valves

Answer 14

closing of the atrioventricular valves

Question 15

The _ is the volume of blood in a ventricle at the beginning of systole
- end-systolic volume
- stroke volume
- ejection fraction
- asystolic volume
- end-diastole volume

Answer 15

end-diastole volume

Question 16

Which of the following is occurring during ventricular diastole?
- ventricular ejection
- the AV valves are closed
- the SL valves are open
- the ventricles are passively filling and atria are contracting
- the ventricles are passively filling

Answer 16

the ventricles are passively filling and atria are contracting

Question 17

Passive refilling of the heart occurs during which phase of the cardiac cycle?
- isovolumetric contraction
- ventricular diastole
- ventricular systole
- atrial diastole

Answer 17

ventricular diastole

Question 18

Which of the following would not increase heart rate?
- beta blocking drugs
- faster depolarization of the pacemaker potential
- decreased parasympathetic stimulation of nodal fibers
- increased levels of epinephrine
- increased sympathetic stimulation of SA node

Answer 18

beta blocking drugs

Question 19

Calculate the cardiac output of a patient with a heart rate of 100 beats/minute and a stroke volume of 75 ml

Answer 19

7500 ml/min (CO = HR x SV)

Question 20

Compared to the right ventricle, the left ventricle has all the following characteristics except:
- is round in cross section
- pumps a greater volume
- has thicker wall
- produces about four to six time more pressure when it contracts
- works harder

Answer 20

pumps a greater volume