Q. No.Pulmonary veins return the oxygenated blood from the lungs to:
1.
right atrium
2.
left atrium
3.
right ventricle
4.
left ventricle
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Erythrocytes in humans are destroyed mainly in:
| 1. | liver and spleen | 2. | heart and lungs |
| 3. | bone marrow | 4. | kidney |
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The most common WBC under normal physiological conditions are:
| 1. | Neutrophils | 2. | Macrophages |
| 3. | Monocytes | 4. | Lymphocytes |
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Which of the following is the largest WBC?
1. neutrophils
2. monocytes
3. macrophages
4. lymphocytes
In a normal ECG, The T wave represents:
| 1. | ventricular depolarization | 2. | atrial repolarization |
| 3. | ventricular repolarization | 4. | atrial depolarization |
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A resting heart rate of fewer than 60 beats per minute is:
1. tachycardia
2. bradycardia
3. flutter
4. fibrillation
In blood, the component that is neither a blood cell, nor a clotting factor would be called:
1. plasma
2. lymph
3. serum
4. puss
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What is true for RBCs of mammals when compared to RBCs of other vertebrates?
1. They undergo erythropoiesis
2. They are capable of phagocytosis
3. They secrete antibodies
4. They are multinucleate
The normal pacemaker of the human heart is the remnant [derivative] of:
1. chordate tendinae
2. bundle of His
3. conus arteriosus
4. sinus venosus
The chamber with the thickest musculature in the human heart would be:
| 1. | the right atrium | 2. | the left atrium |
| 3. | the left ventricle | 4. | the right ventricle |
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