- 1(current)
Q. No.Inter-atrial septum in the human heart is:
| 1. | a thin muscular wall | 2. | a thick muscular wall |
| 3. | a thin membranous wall | 4. | a thick membranous wall |
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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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Purkinje fibers are:
| 1. | Intrinsic neural fibers in the ventricles |
| 2. | Muscle fibers that interconnect SA node and AV node |
| 3. | Muscle fibers that are distributed in the ventricular musculature |
| 4. | Neural fibers that spread the impulse throughout the ventricular muscle mass |
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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 |
| 1. | Annelids and arthropods | 2. | Annelids and chordates |
| 3. | Chordates and arthropods | 4. | Mollusks and arthropods |
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| 1. | Ectoderm | 2. | Mesoderm |
| 3. | Endoderm | 4. | All three germ layers |
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- 1(current)
Q. No.
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