click below
click below
Normal Size Small Size show me how
WK5 skeleton
Wk5 the skeleton
Question | Answer |
---|---|
Axial skeleton | Skull, vertebral and rib cage |
Skull | Eight cranial nerves form brain case, also protects the eyes and ears. 14 bones make up the face. The immovable joints between these bones are called Sutures. |
Para nasal sinuses | mucus lined cavities inside cranial and facial bones that surround the nasal cavity |
Vertebral column | consist of 26 vertebral bones. Supports trunk and head; encloses and protects the spinal cord in the vertebral canal. Disc of fibrous cartilage absorb shock |
Rib cage | Sternum and *12 pairs of ribs protect thoracic and upper abdominal organs |
Appendicular Skeleton | Bones of the arms, legs, shoulders and pelvic girdles. |
Joints | Articulations. Classification based on amount of movement |
Synarthrosis | Immoveable-a type of joint which permits very little or no movement under normal conditions. Most synarthrosis joints are fibrous.(Sutures) |
Amphiarthrosis | Slightly movable (vertebra) |
Diarthrosis | (Freely movable) Any of several types of bone articulation permitting free motion in a joint, as that of the shoulder or hip. |
Synovial joints | contains synovial fluid (knee) A Synovial joint, also known as a diarthrosis, is the most common and most movable type of joint in the body of a mammal. |