11B - Hominin Evolution Flashcards

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1
Q

genus (pl. genera)

A

A taxonomic rank above species and below family. Modern humans belong to the genus Homo.

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2
Q

biped

A

An individual that moves on two legs (upright-walking).

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3
Q

arboreal

A

Living in or amongst trees.

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4
Q

cerebrum

A

The largest part of the brain, which comprises two-thirds of the brain’s entire weight and is responsible for a large range of vital functions including sensory processing, motor control and visual and spatial learning.

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5
Q

sagittal crest

A

A ridge a hard bone running lengthwise (front to back) along the top of the skull. A pronounced sagittal crest indicates strong jaw muscles.

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6
Q

arm to leg ratio

A

The ratio of arm length to leg length. Tree-dwelling hominids have longer arms and shorter legs. Or a larger arm to leg ratio.

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