Support, Movement and Growth in Animals (10)

Science

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The backbone of four-legged terresrtrial animals such as the camel and the horse

Curves up or down

Advantage of animals that have curves up or down backbone (1)

This condition gives stronger support to the muscles attached to the backbone

Advantage of animals that have curves up or down backbone (2)

The curvature enables the backbone to withstand the gravitational force that acts on the animals

Endoskeleton of aquatic vertebrates (1)

Aquatic vertebrates have a smaller endoskeleton compared to their body

Endoskeleton of aquatic vertebrates (2)

The pectoral girdle and the pelvic girdle of the aquatic animals are small and weak

Endoskeleton of aquatic vertebrates (3)

Aquatic vertebrates such as the whale can grow larger than the size of their skeleton

Endoskeleton of a whale

Endoskeleton of a bird (1)

A bird has the bone structure that is adapted for flying

Endoskeleton of a bird (2)

The flat and wide sternum bone (breast bone) of the bird functions as a place for the attachment of muscles for flight

Endoskeleton of a bird (3)

The bones of the bird are also hollow and light

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