A four chambered heart is not seen in:

 
1. Amphibians 2. Crocodiles
3. Birds 4. Mammals

Subtopic:  Human Heart: Gross Anatomy |
 88%
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A closed circulatory system is found in:
1. Annelids and arthropods 2. Annelids and chordates
3. Chordates and arthropods 4. Mollusks and arthropods
Subtopic:  Human Heart: Gross Anatomy |
 81%
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The human heart is derived from embryonic:
 
1. Ectoderm 2. Mesoderm
3. Endoderm 4. All three germ layers
Subtopic:  Human Heart: Gross Anatomy |
 91%
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Which of the following valves is also known as the ‘Mitral’ valve?
1. Right atrio-ventricular 2. Left atrio-ventricular
3. Aortic semilunar 4. Pulmonic semilunar
Subtopic:  Human Heart: Cardiac Cycle |
 84%
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The atrial depolarization on a surface ECG is represented by:
1. P wave 2. PR interval
3. QRS complex 4. ST segment
Subtopic:  ECG & Coronary Artery Disease |
 91%
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To obtain a standard ECG, a patient is connected to the machine with three electrical leads including all the following except:

 
1. One to right wrist 2. One to left wrist
3. One to right ankle 4. One to left ankle
Subtopic:  ECG & Coronary Artery Disease |
 79%
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During a cardiac cycle, the ventricular systole will lead to:
1. ventricular filling.
2. the atrioventricular valves to close, and then the semilunar valves to open.
3. the semilunar valves to close, and then the atrioventricular valves to open.
4. pressure to become greater in the aorta and pulmonary trunk than in the ventricles.
Subtopic:  Human Heart: Cardiac Cycle |
 84%
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The ‘double circulation’ of humans includes:
I.  Systemic circulation
II. Coronary circulation
III. Pulmonary circulation
IV. Portal circulation
1. I and III only 2. I and II only
3. II and IV only 4. II and III only
Subtopic:  Human Heart: Double Circulation |
 91%
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Consider the two given statements:
I: Pulmonary circulation carries deoxygenated blood to the lungs and brings oxygenated blood back to the heart.
II: The systemic circulation provides nutrients, oxygen and other essential substances to the tissues and takes carbon dioxide and other harmful substances away for elimination.
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic:  Human Heart: Cardiac Cycle |
 89%
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The cardiac output can be increased by:
I. Sympathetic neural signals
II. Adrenal cortical hormones

1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic:  Regulation of Cardiac Activity |
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