SKELETAL SYSTEM Flashcards
Osteoclasts are?
Bone ‘eating’ cells
Osteoprogenitor/Osteogenic cells function to?
Heal and cyclical bone replacement
What does trabeculae contain?
Contain osteocytes in the lacunae, which connected by canaliculi
Osteon is also known as?
Haversian Systems
Nutrient Arteries supply…?
The inner compact bone, spongy bone, and red bone marrow
Osteocytes are?
Mature bone cells
Osteoblasts are?
Bone building cells
The external layer of all bone is known as?
Compact bone/Cortical/Dense
The red marrow is for?
Blood cell formation
The space within the diaphysis is known as?
Medullary Cavity/Marrow Cavity
The diaphysis is what part of the bone?
The shaft - main portion of the bone
The yellow marrow is for?
Fat storage
Describe Lacunae.
The space between the rings, containing Osteocytes
Describe the Central Haversian Canal.
A hole through the osteon which blood and lymphatic vessels run
The metaphyses is what part of bone?
Inbetween the diaphysis and the epiphyses
What is periosteum?
A CT covering surrounding bone
Concentric Lamallae are?
Rings of calcified bone matrix around the central canal
From middle age, bone loss ______ bone growth.
Exceeds
Canaliculi are?
Small channels sticking out from lacunae allowing osteocytes communication
Which part of bone contain the epiphyseal growth plate/epiphyseal line?
Metaphyses
The matrix is comprise of?
25% water, 25% collagen, 50% mineral salts
The inner layer of periosteum contain?
Contains bone forming cells
Describe Volmann’s Canals.
Transverse holes connecting the inner and outer portion of bone
In young adults, bone growth is ______ to bone loss.
Equal
The outer layer of periosteum is a…?
A tough, supportive/protective layer
Spongy Bone/Cancellous Bone contains?
Trabeculae
Periosteal Arteries supply…?
The periosteum and outer compact bone
The epiphyses is what part of the bone?
The ends of the bone
