Q. No.In humans, blood passes from the post caval to the diastolic right atrium of heart due to:
1. pushing open of the venous valves
2. suction pull
3. stimulation of the sino auricular node
4. pressure difference between the caval and atrium
If you suspect a major deficiency of antibodies in a person, to which of the following would you look for confirmatory evidence?
1. Serum albumins
2. Serum globulins
3. Fibrinogen in the plasma
4. Haemocytes
A drop of each of the following is placed separately on four slides. Which of them will not coagulate?
| 1. | blood plasma |
| 2. | blood serum |
| 3. | Sample from the thoracic duct of the lymphatic system |
| 4. | Whole blood from the pulmonary vein |
Match the Column I and Column II:
| Column I | Column II | ||
| (a) | P-waves | (i) | Depolarisation of ventricles |
| (b) | QRS complex | (ii) | Repolarisation of ventricles |
| (c) | T-wave | (iii) | Coronary ischemia |
| (d) | Reduction in the size of T-wave | (iv) | Depolarisation of atria |
| (v) | Repolarisation of atria |
| Options: | (a) | (b) | (c) | (d) |
| 1. | (ii) | (iii) | (v) | (iv) |
| 2. | (iv) | (i) | (ii) | (iii) |
| 3. | (iv) | (i) | (ii) | (v) |
| 4. | (ii) | (i) | (v) | (iii) |
What would be the heart rate of a person if the cardiac output is 5L, blood volume in the ventricles at the end of diastole is 100 mL and at the end of ventricular systole is 50 mL?
1. 125 beats per minute
2. 50 beats per minute
3. 75 beats per minute
4. 100 beats per minute
Assertion: Right atrium and right ventricle of heart are known as pulmonary heart.
Reason: Both right atrium and ventricle pump the deoxygenated blood.
- If both the assertion and the reason are true and the reason is a correct explanation of the assertion
- If both the assertion and reason are true but the reason is not a correct explanation of the assertion
- If the assertion is true but the reason is false
- If both the assertion and reason are false
Aging RBCs are phagocytized by macrophages in the mononuclear phagocyte system [sleen or liver] and their components are recycled, EXCEPT for the
1. iron atom from the heme group, which is excreted in bile
2. globin peptide chains, which are sent to the kidneys for excretion
3. globin peptide chains, which are converted into bilirubin
4. heme group (minus the iron atom), which is converted into a green pigment called biliverdin
The normal pacemaker of the human heart, sinoatrial node, is derived from the more primitive:
1. ventricle
2. bundle of His
3. conus arteriosus
4. sinus venosus
Amongst the following, a molecule that would lead to coagulation of the blood would be:
1. prostacyclin
2. tissue factor or thromboplastin
3. plasmin
4. tissue plasminogen activator
During a cardiac cycle:
1. About 70 ml of blood is pumped by the two ventricles
2. The left atrium and the left ventricle contract simultaneously
3. More blood is pumped into the systemic than in pulmonary circulation
4. The atria contract prior to the ventricles
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