Where are the depressions of the occipital bone located?
The two upper depressions are triangular-shaped and embed the occipital lobes of the cerebrum, the largest part of the brain. The lower two depressions are rectangular and contain the hemispheres of the cerebellum, the part of the brain that receives information.
Which is the best description of a hollow bone?
A bone that is hollow or contains many air cells, such as the mastoid process of the temporal bone. Synonym (s): hollow bone.
How are joints classified according to their degree of mobility?
Hyaline cartilage has a very smooth, almost frictionless surface, which allows for smooth, pain-free motion at the joint. Joints can be classified according to their degree of mobility: Immovable ( synarthrosis) —bones are held together by firm fibrous tissue so they are essentially motionless; examples include the bones of the skull.
What makes up cancellated bone in the human body?
cancellated bone ( cancellous bone) bone composed of thin intersecting lamellae, usually found internal to compact bone. cartilage bone bone developing within cartilage, ossification taking place within a cartilage model, as opposed to membranous bone. cheek bone zygomatic bone. collar bone clavicle.
What does it mean when two bone surfaces come together?
As the name implies, an articulation is where two bone surfaces come together (articulus = “joint”). These surfaces tend to conform to one another, such as one being rounded and the other cupped, to facilitate the function of the articulation.
What causes cartilage to break down in the joints?
Osteoarthritis causes cartilage — the hard, slippery tissue that covers the ends of bones where they form a joint — to break down. Rheumatoid arthritis is a disease in which the immune system attacks the joints, beginning with the lining of joints.
A bone that is hollow or contains many air cells, such as the mastoid process of the temporal bone. Synonym (s): hollow bone.
Where does the articulation of a bone come from?
As the name implies, an articulation is where two bone surfaces come together (articulus = “joint”). These surfaces tend to conform to one another, such as one being rounded and the other cupped, to facilitate the function of the articulation. A projection is an area of a bone that projects above the surface of the bone.
