The Skeletal System Flashcards
A union of 2 bones is called a
Articulation or joint
Ligaments and tendons provide
Stability or tightness to the joint
The skeleton stores up neede minerals mainly
Calcium and phosphorus
The skeletal system acts as a factory for the manufacture of
Blood cells
Long bones …
Are found in the limbs and
Support the body weight and acts as levers of propulsion
Short bones…
Are in the knees and hocks
They aid in the dissipation of concussion
Flat bones such as the ribs scapula and some skull bones help…
Enclose cavities containing vital organs
Irregular bones are..:
Unpaired bones such as the vertebrae and some bones of the skull
All bones (except at their points of articulation) are covered with a thin tough adherent membrane called …
Periosteum
What is the function of the periosteum?
It protects the bone and partially influences its growth
Injury to the periosteum results in…
An abnormal bony growth called exostosis at the point of injury
The axial skeleton consists of
The skull spine ribs breast bone pelvis and tail
How many cervical vertebrae
7
How many Thoracic vertebrae
18
How many lumbar vertebrae
6 sometimes 5
How many sacral vertebrae
5 fused together to form the sacrum
How many coccygeal vertebrae
15 to 21
What are the 3 types of joints
Immovable, slightly movable, and freely movable
What are immovable joints
Joints that are United by connective tissue or fused bone and permit no movement
Eg the bones of the cranium
What are slightly movable joints
Joints where a pad of cartilage adheres both bones and allows slight movements
Eg many vertebrae joints
What are freely movable joints?
It has a joint cavity held together by ligaments cartilage and enclosed in a joint capsule
Eg joints of the legs
