Multiple Choice Questions

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The sliding filament theory of muscle contraction was proposed by

  • A.F. Huxley and A.P. Pullman

  • A.F. Huxley and H.E. Huxley

  • B. Pullman and A.F. Huxley

  • A. Pullman and E. Pullman


B.

A.F. Huxley and H.E. Huxley

A.F. Huxley and H.E. Huxley elucidated the mechanism of contraction and relaxation of straited muscle fibres. They proposed that the shortening of fibrils in contraction is brought about by sliding movement of actin filaments over myosin filaments.


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Which of the following is a part of pectoral girdle?

  • Ilium

  • Ischium

  • Acetabulum

  • Glenoid cavity


All the following are the properties of skeletal muscles except

  • excitability

  • contractility

  • rhythmicity

  • toxicity


Which of the following type of cartilage is found in intervertebral disc of mammal?

  • Hyaline cartilage

  • Fibrous cartilage

  • Calcified cartilage

  • Elastic cartilage


Neural canal is present in :

  • humerus

  • tibia-fibula

  • vertebral column

  • cranial bones


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Caudal vertebrae of man are united to form a single

  • synsacrum

  • pygostyle

  • coccyx

  • None of these


Achilles tendon is associated with :

  • gluteus muscle

  • hamstring muscle

  • quadriceps muscle

  • gastrocnemius muscle


Sigmoid notch is formed by :

  • cavity formed by humerus

  • cavity formed by radio ulna

  • cavity formed by tibia fibula

  • cavity formed by femur


Assertion : Among the land animals, the Cheetah can run fastest over the ground.

Reason : The Cheetah uses its powerful forelimbs to push itself forward during running. 

  • If both Assertion and Reason are true and Reason is the correct explantion of Assertion

  • If both Assertion and Reason are true and Reason is not the correct explanation of Assertion

  • If Assertion is true but Reason is false

  • If Assertion is false but Reason is true.


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Assertion : Rheumatoid arthritis is an inflammation of the synovial membrane in synovial joints.

Reason : Infectious arthritis mostly occurs due to bacterial and viral infection.

  • If both Assertion and Reason are true and Reason is the correct explantion of Assertion

  • If both Assertion and Reason are true and Reason is not the correct explanation of Assertion

  • If Assertion is true but Reason is false

  • If Assertion is false but Reason is true


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