Which bone (yellow) is centrally located and joins with most of the other bones of the skull?
What central bone: The Sphenoid Bone- is similar to a core because it connects with other cranial bones, ensuring that all cranial bones are intact with one another.
What are the two mechanisms by which the bones of the body are formed, and which bones are formed by each mechanism?
Ossification- The formation of new bone tissues
Mech 1: Intramembranous ossification- the formation of bones around on or within the fibrous connective tissue membranes
What bones are formed: The skull, clavicle, flat bones, and most of the cranial bones
Mech 2: Endochondral ossification- The replacement of cartilage with bones. The hyaline cartilage will serve as a template for the formation of bones.
What bones are formed: Majority of the bones below the head and clavicle
Examples: ribs, vertebrae, humerus, femur, etc.
What are the synovial joints being described in the video?
(In order according to the video presentation)
- Ball-and-socket joint
- Hinge Joint
- Pivot Joint
- Condyloid Joint
- Saddle Joint
- Plane Joint
Which type of synovial joint allows for the widest ranges of motion?
The ball-and-socket joint allows for the widest range of motion. The triaxial structure of the joint enables it to articulate in any direction. The round head of the bone fits on the cuplike depression making it function for flexion-extension, abduction-adduction, and rotation.
Source: Tortora, G. J., & Derrickson, B. (2011). Principles of anatomy & physiology. (13th ed., pp. 304). Danvers, MA, Wiley.