Solved Animal Physiology MCQs for Online Test

Animal Physiology study of fundamental biological tasks (digestion, circulation, structural support, movement, reproduction, etc.), and how animals carry them out. in Animal Physiology MCQs we will discuss all about animal behaviors .

Animal Physiology MCQs

1. Hemoglobin that is bonded to carbon monoxide and therefore cannot transport oxygen, is called ?

A. Carboxyhemoglobin
B. Methemoglobin
C. Reduced hemoglobin
D. Carbaminohemoglobin

2. Carbon dioxide is __________ more soluble than oxygen ?

A. 10X
B. 20X
C. 30X
D. 40X

3. The partial pressure of oxygen is equal ?

A. Atmospheric air and alveoli
B. Alveoli and oxygenated blood
C. Alveoli and deoxygenated blood
D. Deoxygenated blood and tissues

4. Where does gas exchange take place in the lungs?

A. Alveolus
B. Bronchus
C. Bronchiole
D. Trachea

5. There are two types of alveolar cells that line the alveolar sacs in the lungs. Type 1 cells participate in gas exchange. What do type 2 cells do?

A. They provide structural support to type 1 cells
B. They secrete surfactant, a chemical that helps the alveoli stay open
C. They also participate in gas exchange
D. All of these

6. Which muscles contract to bring about expiration?

A. Anterior serrati
B. Scalene
C. External intercostal
D. Abdominal recti

7. Most rapid diffusion occurs over short distances at ?

A. Alveolar capillaries
B. Systemic capillaries
C. Both a b
D. None of these

8. Partial pressure gradient of pO2 at alveoli ?

A. 50 mm Hg
B. 100mm Hg
C. 150 mm Hg
D. 200 mm Hg

9. _____has opposite diffusion from capillaries to alveoli ?

A. Po2
B. Pco2
C. Both a b
D. None of these

10. ______of oxygen carried by hemoglobin ?

A. >68%
B. >78%
C. >88%
D. >98%

Animal Physiology MCQs With Answers
                                             Animal Physiology MCQs With Answers


11. Amount of Oxygwn dissolved in Plasma ?

A. 98%
B. 2%
C. 1%
D. None

12. Which one is ideal vehicle for transport of CO2 ?

A. Bicarbonate
B. Plasma
C. Whole blood
D. None of above

13. Site of calcium regulation in thin filaments of skeletal muscle is ?

A. Troponin
B. Myosin
C. Sarcoplasmic reticulum
D. Both A&B

14. Source of calcium in smooth muscle is ?

C. Both ECF & SR
D. None

15. Duration of contraction of Smooth Muscle is ?

A. <10 sec
B. <5 sec
C. >5 sec
D. 100-200 msec

16. Muscle form about __% of a total body weight ?

A. 10%
B. 20%
C. 40%
D. 50%

17._____ muscles are involuntary ?

A. Smooth
B. Cardiac
C. skeletal
D. both A and B

18._____ muscles are attach to bones and move appendages ?

A. Smooth
B. cardiac
C. skeletal
D. None

19. A single skeletal muscle cell is called as ?

A. Muscle fibre
B. Troponin
C. Tropomyosin
D. Actin

20. G-actin is a monomer which will form _____ ?

A. thin filament
B. Thick filament
C. Muscle fibre
D. Smooth muscle

21._____ under resting cover the site of myosin attachment on F actin molecule ?

A. troponin
B. tropomyosin
C. actin
D. none

22.______ provide elasticity to sarcomere ?

A. Titin
B. troponin
C. actin
D. nebulin

23.______ enter the myocardial junction between A and I band ?

B. T-tubules
C. triadic
D. Z disc

24._____band is isotropic ?

A. Light
B. Dark band
C. Both
D. None

25. Area between 2 consecutive Z line is called ______ ?

A. Sarcomere
B. Muscle fibre
C. Traids
D. T-tubule

26._____ is atrial depolarization ?

A. P-wave
B. PR interval
C. T wave
D. QT interval

27. P-R interval should be between _____ ?

A. 120-200 ms
B. 110-120 ms
C. 120-150 ms
D. 130-160 ms

28. Neurotransmitter in skeletal muscle is ?

A. Ach only
B. Epinephrine
C. Norepinephrine
D. Ach and norepinephrine

29. Duration of contraction of smooth muscle is ?

A. upto 2 sec
B. upto 3 sec
C. Upto 4 sec
D. Upto 5 sec

30. Level of development of sarcoplasmic reticulum in smooth muscle is ?

A. Highly developed
B. Poorly developed
C. not present
D. None

31. Nerve supply of skeletal muscle is ?

A. Motor neuron
B. Sensory neuron
C. Mixed neuron
D. None

32. Presence of troponin in ______ muscle ?

A. Smooth
B. Skeletal
C. Both
D. None

33. Source of calcium for smooth muscle is ?

C. ECF and SR
D. troponin

34. In smooth muscle .myosin ATPase speed of contraction is ?

A. Slow
B. Fast
C. Very slow
D. very fast

35. Site of calcium regulation in smooth muscle is ?

A. Troponin in thin filament
B. Troponin in thick filament
C. Myosin in thick filament
D. Myosin in thin filament

36. _____ muscle has latch mechanism ?

A. Skeletal muscles
B. Smooth muscles
C. Both
D. None

37. Presence of gap junction in _____ ?

A. Skeletal muscles
B. Smooth muscles
C. Both
D. None

38. During contraction of a skeletal muscle, the degree of contraction depends upon ?

A. The type of skeletal muscle
B. Number of sarcomeres involved
C. Number of muscle fiber
D. Size of the muscle

39. Disease in which stiffness of jaw and neck muscles occur and progressively lock the jaw is ?

A. Tetany
B. Tetanus
C. Cramp
D. None of these

40. Progressive exercise affects the muscles in term of ?

A. Developing the muscle
B. Degenerating the muscles
C. Causing muscle fatigue
D. All of these

41. What is the amount of carbon dioxide per 100 ml of blood in venous blood in men?

A. 54 ml
B. 50 ml
C. 04 ml
D. 98 ml

42. HC03- + H+ → H2C03 – → C02 + H2O  The reaction shown above occurs in the capillaries of the ?

A. Tissue
B. Aorta
C. Stomach
D. Lungs

43. Exchange of gases during organismic respiration is carried out only by?

A. Osmosis
B. Evaporation
C. Diffusion
D. Vaporization

44. Respiratory gases are exchanged between?

A. Body fluids
B. Lymphatic system
C. From body Cells to arteries
D. All of these

45. Cellular respiration is the process in which cell utilizes Oxygen to produce?

A. Glucose
B. Carbon monoxide
C. Carbon dioxide
D. Proteins

46. Which of the following media have higher content of Oxygen?

A. Water
B. SO,
C. Air
D. CO2

47. Sound box or voice box is another name of?

A. Pharynx
B. Oral cavity
C. Larynx
D. Trachea

48. During inspiration, the diaphragm?

A. Contracts and rises
B. Contracts and goes downward
C. Relaxes and rises
D. Relaxes and goes downward

49. Which is not the cause of allergic reaction in Asthma patients ?

A. Pollen
B. Spores
C. Cold
D. None of these

50. Air does not enter the lungs from oral cavity or nasal passage via ?

A. Epiglottis
B. Glottis
C. Trachea
D. Bronchi

51. Blood contains oxygen per 100 ml of blood when hemoglobin is 98% saturated ?

A. 17.6 ml
B. 18.6 ml
C. 19.6 ml
D. 16.6 ml

52. Glottis is the opening of ?

A. Bronchus
B. Trachea
C. Voice box
D. None of these

53. The voice box (sound box) of man is also known as the ?

A. Glottis
B. Epiglottis
C. Vocal cord
D. Larynx

54. The purple – red respiratory pigment found in the blood of man is the ?

A. Fibrinogen
B. Nitrogen
C. Hemoglobin
D. Oxyhaemoglobin

55. Myocardial infarction is commonly known as ?

A. Stroke
B. Heart Attack
C. Hypertension
D. Hemorrhage

56. Arterial systole duration is calculated as ?

A. 0.7 Sec
B. 0.08 Sec
C. 0.3 Sec
D. 4 Sec

57. The stroke volume of each ventricle is ?

A. 70ml
B. 80ml
C. 70-80ml
D. 90ml

58. Valve present at the base of aorta is ?

A. Semilunar
B. Tricuspid
C. Bicuspid
D. Both a & b

59. The rapid ejection phase of ventricles contraction produces pressure in left ventricles ?

A. 80mmHg
B. 25mmHg
C. 12mmHg
D. 120mmHg

60. Heart beat sound is due to ?

A. Contraction of muscles
B. Contraction of atria
C. Contraction of ventricles
D. Action of valves in heart

61. Two polypeptide chains are involved in the composition of ?

A. Troponin
B. Myosin
C. Tropomyosin
D. Both b & c

62. The source of ATP for immediate contraction of muscles is ?

A. Phasphocreatine
B. Metabolism
C. Respiration
D. All of these

63. Valve present at the base of Pulmonary artery is ?

A. Semilunar
B. Tricuspid
C. Bicuspid
D. Both a & b

64. The source of energy for muscle contraction is ?

A. Glucose
B. Glycogen
C. Fatty acids
D. All of these

65. The structure that reduced during muscle contraction is ?

A. Actin Filament
B. Myosin filament
C. Sarcolemma
D. Sarcomere

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