Asked by Sabrina Ozuna on May 10, 2024

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On a human skull, how is the foramen magnum positioned to demonstrate bipedalism?​

A) ​It is opened at an angle so that the spinal cord emerges almost horizontally.
B) ​It is primarily positioned on the right of the skull to indicate right-handedness.
C) ​It is lower and positioned more forward on the skull.
D) ​It is positioned on top of the skull and allows the skull plates to suture together after birth.

Foramen Magnum

is an opening in the skull through which the spinal cord passes to connect with the brain, crucial for vertebrate skeletal structure.

Human Skull

The bony structure that forms the head in the human skeleton, encapsulating the brain and supporting the structures of the face.

Bipedalism

Is the ability to walk upright on two legs, characteristic of humans and their ancestors.

  • Recognize essential landmarks in hominin evolution, encompassing the emergence of bipedal locomotion, the employment of tools, and notable changes in anatomy.
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IT
Ishani TrzaskaMay 15, 2024
Final Answer :
C
Explanation :
The foramen magnum, which is the opening at the bottom of the skull through which the spinal cord passes, is lower and positioned more forward on the skull in bipedal species. This positioning allows for a more balanced weight distribution over the lower half of the body and is a characteristic of bipedalism.