(Circulation in Animals – Paper 05), Total Questions: 20, Subject: Biology, Topic: Circulation in Animals, Question Type: MCQs
| Sr. No. | Questions | Answers |
| 1. | Pulmonary artery differs from pulmonary vein in having (a) Thick wall (b) Thin wall (c) Valves (d) Both B and C |
Answer: (a) |
| 2. | Pulmonary artery drains deoxygenated blood from (a) Right ventricle (b) Right atrium (c) Left atrium (d) Left ventricle |
Answer: (a) |
| 3. | Pulmonary trunk and aorta are attached by (a) Chordae tendinae (b) Ligamentum arteriosus (c) Coronary sulcus (d) Pericardium |
Answer: (b) |
| 4. | Pulmonary vein carries blood (a) Deoxygenated (b) Oxygenated (c) Mixed (d) Free from wastes |
Answer: (b) |
| 5. | Pulse pressure is (a) Diastolic pressure (b) Systolic pressure (c) Difference between B and A (d) Pressure in great veins |
Answer: (c) |
| 6. | Purkinje fibres are connected with impulse conducting system of (a) Heart (b) Brain (c) Skin (d) Kidney nephrons |
Answer: (a) |
| 7. | Purkinje fibres arise from (a) Apex of ventricles (b) Middle of ventricles (c) Anterior part of auricles (d) Posterior part of auricles |
Answer: (b) |
| 8. | Rate of heart beat is reduced by (a) Acetylcholine (b) Adrenaline (c) Calcitonin (d) Thyroxine |
Answer: (a) |
| 9. | Ridges present in the ventricles are (a) Columnae Carneae (b) Papillary muscles (c) Chordae tendineae (d) Musculi pectinati |
Answer: (a) |
| 10. | Right atrium receives blood from (a) Sinus system (b) Pulmonary veins (c) Inferior vena cava (d) Superior and inferior venae cavae |
Answer: (d) |
| 11. | SA node is located (a) Upper lateral wall of left atrium (b) Lower lateral wall of left atrium (c) Upper lateral wall of right atrium (d) Lower lateral wall of right atrium |
Answer: (c) |
| 12. | Sympathetic nervous system (a) Decreases heart beat (b) Increases heart beat (c) Not related to heart beat (d) Controls heart beat |
Answer: (b) |
| 13. | Systematic circulation of oxygenated blood starts from (a) Right atrium (b) Left atrium (c) Left ventricle (d) Right ventricle |
Answer: (c) |
| 14. | Systole Is contraction of (a) A V node (b) SA node (c) Major arteries (d) Atria and ventricles |
Answer: (d) |
| 15. | Systolic pressure in adult human is (a) 120 mm Hg (b) 120/80 mm Bg (c) 150/120 mm Hg (d) 80 mm Hg |
Answer: (a) |
| 16. | Systolic pressure is 120 mm Hg and diastolic pressure is 80 mm Hg, the pulse pressure is (a) 120 x 80 = 9600 mg Hg (b) 120 + 80 = 200 mm Hg (c) 120 – 80 = 40 mm Hg (d) 120 / 80 = 1.5 mm Hg |
Answer: (c) |
| 17. | The heart muscles are (a) Striated and voluntary (b) Striated and involuntary (c) Smooth and voluntary (d) Smooth and involuntary |
Answer: (b) |
| 18. | The impulse generating (pacemaker) tissue located in the right atrium of the heart is (a) SA node (b) AV node (c) Bundle of His (d) Purkinje fibres |
Answer: (a) |
| 19. | The most active phagocytic white blood cells are (a) Eosinophils and lymphocytes (b) Neutrophils and monocytes (c) Neutrophils and eosinophils (d) Lymphocytes and macrophages |
Answer: (b) |
| 20. | The opening of inferior vena cava into right auricle is regulated by (a) Semilunar valve (b) Valve of Thebesius (c) Eustachius valve (d) none of the above |
Answer: (c) |