Long Bone Anatomy Diagram | Quizlet

TERM

Compact Bone

DEFINITION

dense outer layer; smooth and solid

TERM

Spongy Bone

DEFINITION

honeycomb of pores; contains red marrow

TERM

Diaphysis

DEFINITION

long shaft in between the epiphyses; composed compact bone

TERM

Epiphysis

DEFINITION

the rounded end of the long bone; compose of spongy bone

Epiphyseal line

between diaphysis and epiphysis

remnants of the epiphyseal plate an are of hyaline cartilage that provides longitudinal growth of the bone during youth

TERM

Epiphyseal plate (Growth plate)

DEFINITION

area of hyaline cartilage that separates epiphyses and diaphyses of children's bones; enables growth in length

TERM

Medullary cavity

DEFINITION

large cavity inside the diaphysis that contains yellow bone marrow

TERM

Periosteum

DEFINITION

covers external surfaces of bone except joint surfaces

TERM

Yellow bone marrow

DEFINITION

fat storage found in the medullary cavity of most adult long bones

TERM

Red bone marrow

DEFINITION

produces red and white blood cells and platelets

TERM

Articular Cartilage

DEFINITION

covers the surfaces of bones where they come together to form joints

Osteon

A structural unit of compact bone consisting of a central canal surrounded by concentric cylindrical lamellae of matrix.

Osteocyte

mature bone cell

Central canal

one of a network of tubes running through compact bone that contains blood vessels and nerves

Osteoblasts

bone forming cells; adding minerals TO the bone matrix

Osteoclasts

Bone-destroying cells; remove minerals FROM the bone matrix