lecture 2 Flashcards
Bone Tissue and Features
what are the functions of bones?
1) support
2) protection
3) movement
4) storage
5) site for hematopoiesis
what are long bones?
proportionally long and thin
what are flat bones?
parallel layers of compact bone sandwiching spongy bone
what are short bones?
small cuboidal shaped bones
what are irregular bones?
they are other various shapes other than long, short and flat like your vertebrae
what are sesamoid bones?
develop within tendons and serve as the fulcrum point of tendon
what is compact bone?
dense and grossly homogenous in composition
what is spongy bone?
trabeculae bridging cavities between layers of compact bone
what is the diaphysis?
shaft of the bone
what is important to note about the diaphysis?
it surrounds the medullary cavity that contains yellow marrow for adult or red marrow for child
what is the epiphysis?
ends of long bone
what is the metaphysis?
located between epiphysis and diaphysis, this includes the epiphyseal plate
what is the epiphyseal plate?
found internally at junction of epiphyseal and medullary marrow cavities; this is the site of longitudinal growth
what is the articular cartilage?
found on articulating surfaces surfaces which cushions and absorbs stress
what is the periosteum?
fibrous membrane that bounds the outer surface of bone