Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
25 Cards in this Set
- Front
- Back
|
skeletal components
|
bones and cartialage that form framework which gives particular shape
|
|
|
articulation
|
joints,points where bones attach to each other
|
|
|
skeletal function
|
support soft tissue, maintain form and posture, protect delicate structures, spinal cord, lungs, heart and major blood vessels in thoracic cavity
|
|
|
bones
|
organs of osseous tissue, membranes and marrow
|
|
|
bone function
|
serve as levers to which muscles are attached, ligaments keep joints together, storage area for mineral salts and fat, hematopoesis in red marrow
|
|
|
diaphysis
|
shaft or long portion of a bone
|
|
|
metaphysis
|
narrow region of long bone where diaphysis and epiphysis meet
|
|
|
epiphyses
|
ends of long bones, proximal and distal
|
|
|
articular cartilage
|
thin layer of hyaline cartilage covering the epiphyses
|
|
|
periosteum
|
membrane covering bone's surface, outer fibrous layer, inner osteogenic layer with osteoproginator cells and osteoblasts, collagenous bundles, essential for bone growth, repair and nourishment, point of attachemnt
|
|
|
osteoblasts
|
cells that lay down bone
|
|
|
collagenous bundles
|
Sharpey's fibers, penterate bone and connect osteogenic layer to bone
|
|
|
medullary cavity
|
marrow cavity, in diaphysis holds yellow marrow
|
|
|
endosteum
|
membrane that lines marrow cavity
|
|
|
osteoclasts
|
cells that break down bone, possess lysosomes
|
|
|
spongy bone
|
tabecualr or cancellous bone, lattice with many spaces with red marrow, in epiphyses, short flat irregular bones, inner layer of diaphyses
|
|
|
structure of spongy bone
|
trabecular, irregualr thin plates with osteocytes embedded in lacunae, osteoblasts whihc make bone matrix, red marrow in spaces
|
|
|
compact bone
|
most of bone tissue in long bones, thin layer in epiphyses, thick in diaphysis, fewer marrow spaces, many concentric rings called osteons, interstitial lamellae
|
|
|
osteons
|
Haversian systems
|
|
|
perforating canals
|
Volkmann's canals, horizontally oriented, contain blood vessels & nerves which originate in the periosteum
|
|
|
central canal
|
Haversian canal, vertically oriented with blood vessels and nerves
|
|
|
lamellae
|
concentric rings of matrix
|
|
|
lacunae
|
space between osteocytes
|
|
|
canaliculi
|
little canals that connect one lacunae to another
|
|
|
interstitial lamellae
|
found around osteons, fragments of older osteons
|
