Lesson 1 - SUPPORT SYSTEMS IN ANIMALS - Brebner High School

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EXOSKELETONMOVEMENT:• Muscles are attached to the inside of the exoskeleton• The action against the exoskeleton brings about movementADVANTAGES:• It protects the animal from being attacked by predators• Prevents form dehydration of animal• Reduces damage caused by injury (rocks/logs)

GRADE 11 BUSINESS STUDIES - Brebner High School

EXOSKELETONDISADVANTAGES:• Cannot stretch to allow growth of the animal (thick and hard)This is overcome by the animal shedding its exoskeleton, replacing itwith a softer oneThe soft cuticle soon becomes hard againThis process is called – MOULT<strong>IN</strong>G / ECDYSIS• Reduces the movement at the jointsIt is overcome by the exoskeleton being thin and flexible at joints

Page 2: TYPES OF SKELETONS• Hydrostatic s
Page 6 and 7: Types of skeleton• Some animals m
Page 8 and 9: HYDROSTATIC SKELETONENVIRONMENT:•
Page 12: ENDOSKELETONCONSISTS OF:• Hard su
Page 15 and 16: ENDOSKELETONDISADVANTAGES• Parts

Lesson 1 - SUPPORT SYSTEMS IN ANIMALS - Brebner High School

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