Locomotion Of Bird 15wp
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LOCOMOTION OF BIRD
Special Characteristic of Bird • Its wing is aerofoil in shape. • It has pectoralis major muscles & pectoralis minor muscles. • These muscles are antagonistic muscles. • These muscles extend from sternum to the humerus.
How Birds Fly? • When the pectoralis minor muscles contract, the wings are pulled up (upstroke). • When the pectoralis major muscles contract, the wings are pulled down (down stroke). • The wings which move up and down rhythmically generate the forward thrust as well as provide the lift for the flying bird.
Diagram of Flying Bird
THE END
Special Characteristic of Bird • Its wing is aerofoil in shape. • It has pectoralis major muscles & pectoralis minor muscles. • These muscles are antagonistic muscles. • These muscles extend from sternum to the humerus.
How Birds Fly? • When the pectoralis minor muscles contract, the wings are pulled up (upstroke). • When the pectoralis major muscles contract, the wings are pulled down (down stroke). • The wings which move up and down rhythmically generate the forward thrust as well as provide the lift for the flying bird.
Diagram of Flying Bird
THE END
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