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Q. No.During ventricular contraction in a cardiac cycle:
1.
the AV valves close earlier than the opening of semi lunar vales
2.
the AV valves close earlier than the closure of semi lunar vales
3.
the AV valves close later than the opening of semi lunar vales
4.
the closure of AV valves and opening of semi lunar valves occur simultaneously
Subtopic: Human Heart: Double Circulation |
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The first heart sound is heard during:
| 1. | beginning of ventricular systole |
| 2. | end of ventricular systole |
| 3. | atrial systole |
| 4. | ventricular ejection |
Subtopic: Human Heart: Cardiac Cycle |
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Match each item in Column I with one in Column II and select the correct answer from the codes given:
| Column I | Column II | ||
| A. | Mitral valve | a. | Allows blood flow from left atrium to left ventricle |
| B. | Papillary muscles | b. | Does not allow back opening of AV valves during ventricular systole |
| C. | AV node | c. | Ensure all chambers do not contract simultaneously |
| D. | Fibrous band between atrial and ventricular muscle mass | d. | Ensures atria contract before ventricles |
Codes
| A | B | C | D | |
| 1. | a | b | c | d |
| 2. | b | a | c | d |
| 3. | b | a | d | c |
| 4. | a | b | d | c |
Subtopic: Human Heart: Gross Anatomy |
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To activate coagulation at the site of injury, certain factors that play an important role in coagulation, can be released by:
| 1. | Platelets and damaged tissue |
| 2. | Basophils and mast cells |
| 3. | Wall of the damaged vessel and basophils |
| 4. | Platelets and mast cells |
Subtopic: Blood: General Description & RBC |
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Formed elements and clotting factors are removed from the blood. The remaining fluid will be called as:
| 1. | Plasma | 2. | Lymph |
| 3. | Serum | 4. | Antiserum |
Subtopic: Lymph |
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Exchange of nutrients and gases between the blood and the cells always occurs:
1. by active transport
2. with the help of transport carrier proteins
3. at the arterial end of the capillary network
4. through the interstitial fluid
Subtopic: Lymph |
75%
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The nodal musculature of the heart has the capability to generate impulse:
| 1. | on stimulation by the sympathetic division of the autonomic nervous system |
| 2. | on stimulation by the parasympathetic division of the autonomic nervous system |
| 3. | on stimulation by the somatic neural division of the peripheral nervous system |
| 4. | without any external stimulus |
Subtopic: Rhythmic Excitation of Human Heart: Part 1 | Rhythmic Excitation of Human Heart: Part 2 |
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Match each item in Column I with one in Column II and select the correct answer from the codes given:
| Column I | Column II | ||
| A. | Closure of AV valves | a. | Second heart sound |
| B. | Closure of semilunar valves | b. | First heart sound |
| C. | Opening of AV valves | c. | Ventricular ejection |
| D. | Opening of semilunar valves | d. | Passive ventricular filling |
Codes
| A | B | C | D | |
| 1. | a | b | c | d |
| 2. | b | a | c | d |
| 3. | b | a | d | c |
| 4. | a | b | d | c |
Subtopic: Rhythmic Excitation of Human Heart: Part 1 | Rhythmic Excitation of Human Heart: Part 2 |
82%
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The second most common formed elements in the human blood are:
| 1. | Proteins | 2. | Water |
| 3. | RBC | 4. | Thrombocytes |
Subtopic: Blood: General Description & RBC |
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The functions of the lymphatic system do not include:
| 1. | The removal of interstitial fluid from tissues |
| 2. | Transport of factors needed for coagulation of blood |
| 3. | transport of nutrients and hormones |
| 4. | Absorption and transport of end products of fat digestion |
Subtopic: Lymph |
67%
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