skeletal part 1

forms the framework of the body, protects vital organs, and works with the muscular system to produce movement at the joints.

Skeleton is composed of ___ bones and _ division

central core or “axis” of the body’s bony framework

The skull bones are joined by immovable joints or ______

consisting of 26 vertebrae.

bones of the skull

designated C1 to C7.

designated T1 to T12

designated L1 to L5

composed of five fused bones

composed of four to five fused bones

1st cervical

2nd cervical

consisting of 12 pairs of ribs joined by cartilage to the sternum (breast bone).

attached or “appended” to the axial skeleton

is formed by the gradual addition of calcium and phosphorus salts to cartilage, a type of dense connective tissue

begins before birth and continues to adulthood

A typical long bone has a shaft or ______ composed of compact bone tissue

Within the shaft is a medullary cavity containing the yellow form of ________, which is high in fat

The irregular _______ at either end is made of a less dense, spongy bone tissue

covers the bone’s outer surface nourishes and protects the bone and also generates new bone cells for growth and repair

Between the diaphysis and the epiphysis each end

growth region

continue to grow in length at these regions throughout childhood and into early adulthood. When the bone stops elongating, this area becomes fully calcified but remains visible as the epiphyseal line

e.g., cranial bones, ribs, scapulae

e.g., wrist and ankle bones

e.g., facial bones, vertebrae

are classified according to the degree of movement they allow

an immovable joint held together by fibrous connective tissue, as is found between the bones of the skull

slightly movable joint connected by fibrous cartilage

is a freely movable joint. Such joints allow for a wide range of movements

cushions and lubricates the joint

which connect the articulating bones

Connect muscle to bone

Soft tissue, cushion most end of the joints