11B - Hominin Evolution Flashcards
1
Q
genus (pl. genera)
A
A taxonomic rank above species and below family. Modern humans belong to the genus Homo.
2
Q
biped
A
An individual that moves on two legs (upright-walking).
3
Q
arboreal
A
Living in or amongst trees.
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.
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.
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.
