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Why is the foramen magnum positioned near the rear of the cranium

Posted on 29.06.2018
Hailey writing about the anatomy of the human body. The parietal and temporal bones form the sides and uppermost portion of the dome of the cranium, and the frontal bone forms the forehead. It is one of the several oval or circular openings foramina in the base of the skull. Surrounding the Foramen Magnum there are four bones, namely para squama, left and right pars lateralis and pars basilaris.
Why is the foramen magnum positioned near the rear of the cranium — pic 1
The foramen magnum is situated in the occipital bone, and forms around the base of the brainstem the medulla oblongata, separating the brain above from the spinal cord below. The position of the foramen magnum is very posterior to make way for the expanded jaw and enlarged hyoid bone. That is in contrast with humans in which the foramen magnum is positioned under the skull, which aligns with vertical posture of humans. I have checked the Device Manager and the microphone is enabled. The basioccipital lies in front of the opening, the two exoccipitals lie to either side, and the larger supraoccipital lies to the posterior, and forms at least part of the rear of the cranium. The resulting hollow sphere can then be drained of air like a balloon and pulled out through the foramen magnum.
Why is the foramen magnum positioned near the rear of the cranium
The internal volume of the cranium is called the cranial capacity. Salt water sharks and there are seve. Click Update beside Card statement name in the 'Selling my items' section. Howler monkeys also have an inflated bulla, which is the bony encasement of the middle ear. What conclusion can she draw so from this fac.

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