Anatomy Lab #2: Basic Bone Anatomy Flashcards
Define diaphysis
Shaft of the Bone
Defien epiphyses
Ends or Extremities of the bone
Define metaphyses
Region where the diaphysis and epiphyses meet
What is the epiphyseal plate?
A layer of hyaline cartilage that allows bone to grow lengthwise
Define articular cartilage
Cartilage that covers the epiphyses and reduces friction at the joint
Define periosteum and the 2 layers
C.T that covers the diaphysis, the two layers are fibrous outer layer and osteogenic inner layer
Define medullary cavity
Space within the diaphysis containing fatty yellow marrow
Define endosteum
Membrane lining the medullar cavity
Name the 4 types of bone cells & list their function or characteristics.
Osteoprogenitor cells - develop
into osteoblasts, mitotically active;
osteoblasts - secrete collagen, no mitotic ability;
osteocytes -
mature bone cells, maintain daily metabolic activity; osteoclasts - modified monocytes that
breakdown & reabsorb bone
What is an osteon?
Basic structural unit of bone = Haversian system
Define lamellae.
Concentric rings of hard, calcified matrix
Define lacunae.
Spaces that contain osteocytes
Define canaliculi.
Canals connecting lacunae with each other & the central canals; conduit system
for nutrient & waste transport
What is the function of Volkmann’s canals.
Canals connecting the vessels of the periosteum with the
Haverian canals & the medullary cavity
Does spongy bone contain osteons? Haversian canals?
NO; NO
