The floor of the middle cranial fossa and part of the posterior cranial fossa is formed by the temporal bone.
Cranial floor unlabeled.
Skull cranial floor bone markings part 2 temporal bone.
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A small area of the ethmoid bone consisting of the crista galli and cribriform plates is located at the midline of this fossa.
Or temporal squama pars squamosa.
Using the interactive image identify each of the following parts of the ethmoid which are too small to observe in your dissection.
The anterior cranial fossa is located between the frontal bone and lesser wing of the sphenoid bone.
The sphenoid bone is a butterfly shaped cranial bone that is located in the middle of the skull between the frontal and temporal bones.
This bone articulates with the sphenoid anteriorly and the occipital bone posteriorly.
The various portions contribute to the floor of the middle cranial fossa and a part of the posterior cranial fossa and has an important relationship.
The floor of the cranial cavity increases in depth from front to back and is divided into three cranial fossae.
Since the brain occupies these areas the shape of each conforms to the shape of the brain regions that it contains.