Which bone (yellow) is centrally located and joins with most of the other bones of the skull?
One of the eight bones that make up the cranium, the top of the skull, is the sphenoid bone. It serves as the primary support for everything and facilitates the connection between the neurocranium and the facial skeleton.
What are the two mechanisms by which the bones of the body are formed and which bones are formed by each mechanism?
Intramembranous ossification and endochondral ossification are the two mechanisms. Early fetal bone formation that takes place on or inside membranes made of fibrous connective tissue is known as intramembranous ossification. Skull, mandible, and clavicle flat bones that have undergone intramembranous ossification.
When mesenchyme cells undergo this transformation into osteogenic cells and osteoblasts, centers of ossification are created. Most skeletal bones are created through a process called endochondral ossification in which connective tissue called cartilage is replaced by bone. All bones in the body, with the exception of the flat bones of the skull, mandible, and clavicle, undergo endochondral ossification.
What are the synovial joints being described in the video?
-
Ball-and-socket joint
-
Hinge joint
-
Pivot joint
-
Condylar/Condyloid joint
-
Saddle joint
-
Gliding joint
Which type of synovial joint allows for the widest ranges of motion?
The ball-and-socket joint is the synovial joint with the greatest range of motion. Motion in both directions is possible because the rounded end of one bone fits into the cup-shaped socket of the other bone. These include the hip and shoulder joints, as examples.