Chapter -6
RESPIRATORY SYSTEM
• Respiration is a process by which oxygen taken in and carbon dioxide given out form body.
• Types of respiration
1. External respiration :
exchange respiratory gas between lungs & blood.
2. Internal respiration :
exchange of respiratory gas between blood & cell.
Respiratory Organs :-
1. Upper respiratory tract
• Nose
• Nasal cavity
• Pharynx
• Larynx
• Trachea
2. Lower respiratory tract
• Lungs
• Bronchi and bronchioles
• Air sacs (alveoli)
Lungs
• The lungs are a pair of cone-shaped organs made up of spongy, pinkish-gray tissue.
• The lungs are surrounded by a membrane called as pleura.
• The space between two lungs called as mediastinum that area contain heart.
1. Your body couldn't breathe without this system. Which one is it?
A. Perspiration system
B. Respiration system
C. Photosynthesis
D. Urinary system
2. The Respiratory system is made up of trachea, the lungs, and?
A. Liver
B. Diaphragm
C. Esophagus
D. Pancreas
3. When you breath in air, you bring oxygen into your lungs and blow out?
A. Carbon dioxide
B. Carbon monoxide
C. Oxygen
D. Hydrogen
4. When you inhale, your lungs?
A. Inflate
B. Turn purple
C. Deflate
D. Disappear
5. What is the name of the tiny air sacs in the lungs?
A. The name of the tiny air sacs in the lungs is called Bronchioles.
B. The name of the tiny air sacs in the lungs is called Ravioli.
C. The name of the tiny air sacs in the lungs is called Alveoli.
D.The name of the tiny air sacs in the lungs is called Bronx.
6. __________is not good for lungs.
A. Exercising
B. Singing
C. Smoking
D.Yelling
7.The trachea is also called the?
A. Lungs.
B. Diaphragm.
C. Windpipe.
D. Bronchus.
8. The tiny hairs that keep mucus and dirt out of your lungs are called?
A. Lung hairs.
B. Stubble.
C. Bronchioles
D. Cilia
9. The voice box is also known as the?
A. Alveoli
B. Larynx
C. Trachea Motor
D.mouth
10. As you breathe, this contracts and flattens to give your lungs room to fill up with air
A. Larynx.
B. Lung balloon.
C. Diaphragm
D. Bronchiole
11. Normal breathing is called
A. Apnoea
B. Euponea
C. Dysponea
D. Hyperponea
12. Trachea is lined with incomplete rings of
A. Fibrous cartilage
B. Calcified cartilage
C. Elastic cartilage
D. Hyaline cartilage
13. Number of alveoli in the human lungs is.
A. 300-400 million
B. 100-150 million
C. 1-2 million
D. 100,000-150,000
14. Vital capacity of lungs of an average human is
A. 3000-4500 ml
B. 1500-1800ml
C. 2000-2500ml
D. 500-1000ml
15. The chemical formula of oxyhemoglobin is
A. Hb4O8
B. Hb4O6
C. Hb(02)4
D. H3b2O8
16. Oxygen dissociation j-curve of myoglobin is
A. Hypobolic
B. Hyperbolic
C. Linear
D. Sigmoid
17. Hamburger,s phenomenon is also known as
A. HCO3 shift
B. Na+ shift
C. H+shift
D. Chloride sift
18. Exchange of gases takes place through the walls of
A. Bronchioles
B. Respiratory bronchioles
C. Alveolar ducts
D. Alveoli
19. True statement for Apnoea is
A. Decreased ventilation
B. Absence of breating
C. Laboured breathing
D. Increased ventilation
20. In Expiration, diaphragm becomes
A. Flattened
B. Relaxed
C. Straightened
D. Arched
21. Rate of respiration is directly affected by:
A. Concentration of carbon dioxide
B. Oxygen in trachea
C. Concentration of oxygen
D. Diaphragm expansion
22. Respiratory system is derived from:
A. Endoderm
B. Mesoderm
C. Ectoderm
D. None of these
23. Schneiderian epithelium is found in
A. Trachea
B. Nasal passage
C. Palate
D. Buccal cavity
24. When the oxygen supply to the tissues is inadequate the condition.
A. Hypoxia
B. Asphyxia
C. Pleurisy
D. Anoxia
25. Exchange of gases in lung alveoli occurs through
A. Active transport
B. Osmosis
C. Simple diffusiona
D. Passive transport
26. Ventilation/respiratory control is present in
A.Medulla oblongata
B. Cerebellum
C. Cerebrum
D. Diencephalon
27. After deep inspiration maximum expiration of lungs is called
A. Vital capacity
B. Total lung capacity
C. Inspiratory capacity
D. Functional residual capacity
28. How many oxygen molecules bound to hemoglobin to give 100% saturation?
A. 5
B. 4
C. 6
D. 7
29. Which of this statement is TRUE for pulmonary respiration?
A. Exchange of gases between alveoli of lungs and the blood
B. Exchange of gases between blood and tissue cells
C. Breathing between the atmosphere and the alveoli of the lungs
D. Production of ATP
30. Which of the following is NOT the function of the respiratory system?
A. Regulate blood pH
B. Helps in gaseous exchange
C. Protection against blood loss
D. Contains receptors for the sense of smell
31. What is the instrument that measures the amount of air inhaled and exhaled with each breath?
(a) Sphygmomanometer
(b) Hygrometer
(c) Stethoscope
(d) Spirometer
32. Each of the alveolar sac is surrounded by
(a) Capillaries
(b) Veins
(c) Arteries
(d) Primarily lymphatic ducts
33. Which of the following statements is true about Trachea in a respiratory system
(a) It functions as passages of air to each alveolus
(b) It functions for sound production
(c) It Acts as passage of air to bronchi
(d) It Lowers the surface tension
34. ________lies in front of esophagus
(a) Trachea
(b) Glottis
(c) Larynx
(d) Epiglottis
35. Emphysema, a chronic disorder is high in cigarette smokers. In such cases the of the person is/are found damaged
(a) Plasma membrane
(b) Alveolar walls
(c) Bronchioles
(d) Respiratory muscles
36. During expiration the diaphragm becomes
(a) Dome-shaped
(b) Flattened
(c) Normal
(d) Oblique
37. Lungs are enclosed by
(a) Diaphragm
(b) Pleural membranes
(c) Bronchiole membranes
(d) Sternum
38. Number of lobes in both right land left lungs are respectively
(a) Three, two
(b) Two, three
(c) Two, one
(d) Three, three
39. The primary muscle of inspiration which forms the floor of the thoracic cavity is
(a) Pleural membrane
(b) Sternum
(c) Ventricle
(d) Diaphragm
40. The tube that runs from the middle ear to the pharynx
(a) Epiglottis
(b) Trachea
(c) Glottis
(d) Auditory tubes
41. Voice box or is the portion of the respiratory tract which contains the vocal cords for producing sound
(a) Trachea
(b) Glottis
(C) Larynx
(d) Epiglottis
42. Which one of the followings is the function of Thoracic cavity
(a) Forms the floor of the thoracic cavity (b) Encloses the lungs
(c) Contains the respiratory organs
(d) None of these
43.
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