Locomotion In Earthworm 1f186i
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THE MECHANISM OF LOCOMOTION IN EARTHWORM •
•
THE FORCE OF ATTRACTION IN HYDROSTATIC SKELETON ANIMAL LIKE EARTHWORM IS APPLIED TO A FLUID FILLED CAVITY CALLED COELOM. COELOM IS SURROUNDED BY 2 ANTAGONISTIC LAYERS OF MUSCLE: #CIRCULAR MUSCLE# (SURROUNDS THE CHAMBER) #LONGITUDINAL MUSCLE# (EXTEND FROM END TO END)
LOCOMOTION IN EARTHWORM • Circular muscle contract, longitudinal muscle relax, earthworm becomes thinner and longer (vice versa) • During locomotion, circular and longitudinal muscles contract and relax rythmically producing peristaltic waves along the body.
Succesive peristaltic waves begin atthe front and move towards the end of the body (bristle (chaetae eathworm has-:chaetae function ofanchorspart of the body to the* ground so that other parts can be .pulled towards the static parts
•
THE FORCE OF ATTRACTION IN HYDROSTATIC SKELETON ANIMAL LIKE EARTHWORM IS APPLIED TO A FLUID FILLED CAVITY CALLED COELOM. COELOM IS SURROUNDED BY 2 ANTAGONISTIC LAYERS OF MUSCLE: #CIRCULAR MUSCLE# (SURROUNDS THE CHAMBER) #LONGITUDINAL MUSCLE# (EXTEND FROM END TO END)
LOCOMOTION IN EARTHWORM • Circular muscle contract, longitudinal muscle relax, earthworm becomes thinner and longer (vice versa) • During locomotion, circular and longitudinal muscles contract and relax rythmically producing peristaltic waves along the body.
Succesive peristaltic waves begin atthe front and move towards the end of the body (bristle (chaetae eathworm has-:chaetae function ofanchorspart of the body to the* ground so that other parts can be .pulled towards the static parts
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