Anatomy

cartilage forming cells in the srrounding perichondium secrete new matrix against the external face of the existing cartilage

lucunae bond chondrocytes divide and secrete new matrix expanding the cartilage from within

are considered longer than they are wide. has a shaft plus two ends. includes all limb bones except patella, wrist, and ankle bones

made of some variety of cartilage tissue, which consists primarily of water.

acts like a girdle to resist outward expansion when the cartilage is compressed. Contains teh blood vessels from which nutrients diffuse throught the matrix to reach the cartilage cells

looks like frosted glass. provides support with flexiblility and resilence.

forms the long axis of the body and includes the bones of the skull, vertabrae, and rib cage. Involved in protecting, supporting and carrying other body parts

consists of the bones of the upper and lower limbs and the girdles that attach teh limbs to the axial skeleton

roughly cubed shape. example are bones of the wrist and ankles

shaped like a sesame sead, special type of short bone that form in the tendons.

the external layer is consisted of

the inner layer is

shaft, forms the long axis of the bone. constructed of thick collar of compact bone that surrounds the central medullary cavity.

medullary cavity is also called the

are the bones ends. Compact bone forms the exterior, and spongy bone contains the interior.

tufts of collagen fibers that extend from its fibrous layers into the bone matrix

in flat bones, the spongy tissue is called

hematopoietic tissue,found within the trabecular cavities of spongy bone of long bones and in the diploe of flat bones.

matrix tube, little plate

contains small blood vessels and nerve fibers that serve the needs of the osteons cells.

spider shaped mature cells

hairlike canals connect lucanae to each other and central canal

lie at the right angles to the long axis of the bone and connect the blood and nerve supply of to the periosteum to those in the central canals and medullary cavity

lying between intact osteons are incomplete lamelle called

located just deep of the peristeum and superfical to the endosteum. extend around the entire circumference of the diaphysis and efictively resists twisting of the long bone

mineral salts, largely calcium phosphates present in the form of tiny crystals surroundng the collagen fibers in the extracellular matrix

results in the formation of cranial bones of the skull and clavicles. all bones that are formed are flat boons

process which begins in the second month of development, uses hyaline cartilage as models for bone construction

the formation of long bone typically begins in the center of the hyaline cartilage shaft at a region called

occurs wherever bone is injured or added strength is required

unmineralized band of gauzy looking bone matrix