General Science
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Respiratory System

      Respiratory System-Important Points
No. Respiratory System
1. Larynx is called voice box.
2. Trachea is called wind pipe.
3. Right lung has three lobes. Left lung has two lobes.
4. Oxygen carrying protein called haemoglobin is absent in the blood of insects. Mence blood of insects is white in colour.
5. Larynx opens into Trachea.
6. Epiglottis prevents food from entering into Larynx. It acts as a lid over Glottis.
7. Oxygen carrying protein called haemoglobin is absent in the blood of insects. Mence blood of insects is white in colour.
8. Oral cavity is separated from Nasal cavity by a bony plate called plate.
9. Lungs are made up of Alveoli.
10. The trachea divides into two tubes called branchi in thoracic cavity. Bronchi again divides into bronchioles.
11. Respiration through lungs is called pulmonary respiration. It takes place in Mammals. Birds and Reptiles.
12. Lungs are covered by a membrane called pleura.
13. Respiration through Gills is called Bronchial respiration. It takes place in fishes and Todpole larva of Frog.
14. Glottis is a slit like opening through which pharynx is connected to Larynx.
15. Respiration through skin is called cutaneous respiration Respiration through skin takes place in earthworm, leech and salamanders.
16. Respiration through tracheal tubes is called tracheal respiration. If takes place in cockroach.
17. Respiration takes place through diffusion in Amoeba, paramoecium and Euglena.
18. Carbondioxide turns lime water to milkey.
19. The gas exchange between blood and cells is called Internal Respiration.
20. The gas exchange between blood and respiratory organs is called External respiration.
21. In Frog glands on the skin secrete mucus.
22. Pharynx is the common passage for food and air.
23. Haemoglobin is present in the plasma of blood in Earthworm.
24. Cartilagenous rings are present in trachea of man.
25. Three lobes are present in the right Lung of man.
26. Two lobes are present in the left Lung of man.
27. Respiration takes place through Gills in Todpole Larvae.
28. The colour of blood of Cockroach is white.
29. Frogs jump into water to keep skin wet and moist.
30. Coelomic fluid is present in Earthworm.
31. Rate of respiration in newly born children is 32 times per minute.
32. Diaphragm plays a major role in respiratory movements.
33. There are 10 pairs of Stigma in Cockroach.
34. In Frog, Earthworm and Salamander respiration takes place through the skin.
35. Cutaneous respiration takes place in Earthworm. Its skin has a large number of blood vessels.
36. The parts of respiratory system in human beings are:
a) Nostrils b) Nasal Cavities c) Pharynx d) Larynx e) Trachea f) Bronchi and Bronchioles g) Alveoli
37. Pleura membranes enclose the Lungs and Protects the Lungs from injury.
38. The Pulmonary Vein carries oxygenated blood from Lungs to Heart.
39. The bacteria Lactobacillus converts pyruvic acid to lactic acid.
40. Mitochondria are the energy producing centres in the cell.
41. One ATP molecule gives 7200 calories of energy.
42. Elementary particles are present on the cristae. Elementary particles have large number of respiratory enzymes.
43. Cellular respiration takes place in Mitochondria.
44. In kreb's cycle Acetyl coenzyme -A is attached to oxaloacetic acid. This results formation of citric acid.
45. Inner membrane of Matrix produces projections into the matrix. These projections are called cristae.
46. Glycolysis occurs in the cytoplasm of the cell krebs cycle occurs in the Matrix. Electron transport occurs in the cristate.
47. In respiration energy is produced by the oxidation of glucose. This process occurs in cells. Hence it is called cellular respiration.
48. Oxidative phosphorylation is the process of converting ADP into ATP in respiration.
49. Inner compartment of Mitochondria is called Matrix. Matrix is surrounded by two membranes.
50. Fermentation is the process of converting pyrvic acid to ethanol by yeast in the absence of oxygen.
51. They are the sites of cellular respiration.
52. In Aerobic respiration each molecule of pyruvic acid is oxidized to 3 molecules of co2. Mitochondria are called power Mouses of the cell.
53. If the respiration takes place in the presence of oxygen it is called Aetobic respiration.
54. Carbondioxide and water are the end products of Aerobic respiration.
55. It the respiration takes place in the absence of oxygen it is called anaerobic respiration.
56. In Anaerobic respiration pyruvic acid is converted into ethanol or lactic acid.
57. Glycolysis is the first in respiration. In glycolysis glucose is converted into two molecules of pyruivic acid.
58. The artery which brings deoxygenated blood from heart to lungs is called Pulmonary Artery.
59. Gas exchange takes place in Alveoli.