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Skull in Biological Definition

Anatomy

... Thigh bone (femur) Humerus Mandible Patella Radius skull Tibia Ulna Rib Vertebrae Glands : Ductless ... Lip Nerve Peritoneum Serous membrane Skeleton skull Spinal cord Vein See also List of anatomical topics ...

Bone

... bones, except that they have no medullar cavity. Flat bones (e.g. the skull and ribs) consist of two layers of compact bone with a zone of cancellous ... ossification mainly occurs during formation of the flat bones of the skull ; the bone is formed from mesenchyme tissue. Endochondral ossification ...

Brain

... spinal cord . In craniates, the brain is protected by the bones of the skull . Vertebrates are characterized by increasing complexity in the ... neocortex . The meninges are the system of membranes that separate the skull from the brain. The three-layered covering is made of dura mater , ...

Computed axial tomography

... puncture or to evaluate the functioning of a ventriculoperitoneal shunt . CT is also useful in the setting of trauma for evaluating facial and skull fractures . Chest CT CT is excellent for detecting both acute and chronic changes in the lung parenchyma. For detection of airspace disease ...

Human

... from that of chimpanzees about five million years ago, and from gorillas about eight million years ago. However, the discovery of a hominine skull approximately seven million years old already showing a divergence from the ape lineage suggests an earlier divergence. Human evolution is ...

Joint

... separate, fuse together as the child approaches adulthood. Children whose craniums fuse too early may suffer deformities and brain damage, as the skull does not expand properly to accommodate the growing brain - a condition known as craniostenosis . Amphiarthroses are slightly moveable joints ...

Species

... in an average of just three skeletal differences out of the total 338 bones in the body. Amazingly, 58 percent of these differences occurred in the skull alone. "This is a lot less variation than I'd expected", said ... 2003-08-08, ScienceDaily: Cross-species Mating May Be Evolutionarily ...
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