Do humans have Basicranial flexion?

Modern humans have more ventrally deflected orbits than all other primates and, for their degree of basicranial flexion, have more ventrally deflected orbits than predicted by the regression equations for hominoids.

What is the basicranium?

[TA] the sloping floor of the cranial cavity. It comprises both the external base of cranium (external view) and the internal base of cranium (internal view). Synonym(s): basis cranii [TA], basicranium ☆ , base of cranium.

What is a braincase?

Medical Definition of braincase : the part of the skull that encloses the brain — see cranium.

What is Basicranial flexion?

Basicranial flexion is defined as the flexion in the sagittal plane of the ethmoid, the sphenoid, and the basilar part of the occipital bone (Lieberman and McCarthy 1999; Spoor 1997). It characterizes the relative position of the anterior, middle, and posterior cranial fossa (Lieberman and McCarthy 1999).

What is neurocranium and Dermatocranium?

The neurocranium/chondrocranium includes the box that encloses the brain and the capsules surrounding the sense organs. It protects the brain. 2. The splanchnocranium is the visceral portion of the skull that supports the gills and contributes to the jaws. 3.The dermatocranium is the dermal bone that is believed to.

What is Stylomastoid foramen?

The stylomastoid foramen is a rounded opening at the inferior end of the facial canal. It is located on the inferior surface of the petrous temporal bone, between the base of the styloid process and the mastoid process of the temporal bone.

What is the purpose of the vomer?

The vomer’s main job is to help support the structure of the nasal passages and face. Running as it does down the middle of the viscerocranium, this bone, along with a band of nasal cartilage, skin, and blood vessels, divides the nasal respiratory cavity in two.

What is Vormer?

Anatomical terms of bone. The vomer (/ˈvoʊmər/) is one of the unpaired facial bones of the skull. It is located in the midsagittal line, and articulates with the sphenoid, the ethmoid, the left and right palatine bones, and the left and right maxillary bones.

What is Meckel’s cartilage?

The Meckelian Cartilage, also known as “Meckel’s Cartilage”, is a piece of cartilage from which the mandibles (lower jaws) of vertebrates evolved. Originally it was the lower of two cartilages which supported the first branchial arch in early fish.