The location of the human heart is most accurately described as:

1. mediastinum of the lungs.
2. mediastinum of the pericardium.
3. mediastinum, which is located in the thoracic cavity.
4. thoracic cavity, which is located in the mediastinum.

Subtopic:  Human Heart: Gross Anatomy |
 65%
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The right ventricle of the heart pumps blood into the:

 
1. pulmonary circulation 2. systemic circulation
3. coronary circulation 4. portal circulation
Subtopic:  Human Heart: Double Circulation |
 83%
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What separates the atria from the ventricles so that the atrial impulse does not spill onto the ventricles?

1. fibrous skeleton 2. AV bundle
3. visceral pericardium 4. Purkinje fibers
Subtopic:  Human Heart: Gross Anatomy |
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If the atrioventricular node is damaged:
1. SA node would not develop action potential
2. atria will fail to contract
3. the impulse will not reach AV node
4. the impulse will not reach ventricles

Subtopic:  Human Heart: Cardiac Cycle |
 69%
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Which of these statements about the ABO blood group is NOT true?

1.  A person with type O blood can donate blood to individuals with type A, B, AB, or O blood types.
2.  Transfusions should be made considering the plasma of the donor and the erythrocytes of the patient (recipient).
3.  A person with type A blood should not receive a transfusion from someone with type AB blood.
4.  A person with type O blood has both the A and B antigens.
Subtopic:  Blood: Blood Group (A,B,O) |
 75%
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A person has a complete blood count done. Which of the following would not be normal?
1. total RBC count - 5.0 million /µL
2. total WBC count – 1500 /µL
3. total platelet count - 225,000 /µL
4. hemoglobin – 14.5 g / 100 ml

Subtopic:  Blood: White Blood Cells |
 75%
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An Rh + woman is pregnant with an Rh- fetus. The consequences can be:

1. There is usually no risk during the first pregnancy, but it can harm the fetus during a subsequent pregnancy if the mother is not treated.
2. It always poses a serious risk to the fetus, even in the first pregnancy.
3. Only in rare cases is there a risk to the fetus during the first pregnancy.
4. There is no risk to the fetus when a woman who is Rh+ carries an Rh- fetus.
Subtopic:  Blood: Blood Group |
 55%
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What is true for the blood Type O?

1. It is universal donor because it has neither anti-A antibodies nor anti-B antibodies circulating in the plasma.
2. It is universal donor because it has neither antigen A nor antigen B on its RBCs.
3. It is universal recipient because it has neither anti-A antibodies nor anti-B antibodies circulating in the plasma.
4. It is universal recipient because it has neither antigen A nor antigen B on its RBCs.
Subtopic:  Blood: Blood Group (A,B,O) |
 80%
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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R): 
Assertion (A): If the SA node does not function, or the impulse generated in the SA node is blocked before it travels down the electrical conduction system, the heart would stop.
Reason (R): No other part of the nodal tissue of the heart is capable of generating the impulse.

In the light of the above statements choose the correct answer from the options given below:

1. Both (A) and (R) are True and (R) is the correct explanation of (A).
2. Both (A) and (R) are True but (R) is not the correct explanation of (A).
3. (A) is True but (R) is False.
4. Both (A) and (R) are False.
Subtopic:  Human Heart: Cardiac Cycle |
 57%
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Purkinje fibers are:

1. Intrinsic neural fibers in the ventricles
2. Muscle fibers that interconnect SA node and AV node
3. Muscle fibers that are distributed in the ventricular musculature
4. Neural fibers that spread the impulse throughout the ventricular muscle mass
Subtopic:  Human Heart: Gross Anatomy |
 69%
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