Q. No.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.
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| 1. | Ectoderm | 2. | Mesoderm |
| 3. | Endoderm | 4. | All three germ layers |
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| 1. | Annelids and arthropods | 2. | Annelids and chordates |
| 3. | Chordates and arthropods | 4. | Mollusks and arthropods |
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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 |
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The second most common formed elements in the human blood are:
| 1. | Proteins | 2. | Water |
| 3. | RBC | 4. | Thrombocytes |
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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 |
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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 |
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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 |
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The autonomic regulation of cardiac activity is carried out by a neural center located in:
| 1. | Medulla oblongata | 2. | Hypothalamus |
| 3. | Cerebrum | 4. | Thalamus |
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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 |
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