Skeletal System Flashcards
Bone aka
Osseous tissue
Hemopoisis
creation of various blood cells by red marrow
Yellow marrow stores what?
energy (full of adipocytes)
Name of membrane that surrounds bone
periosteum
shaft of bone
Diaphysis
End of bones?
Epiphysis
Metaphysis
mature region where epi connects to dia
Is bone connective tissue?
yes
is the smooth, white tissue that covers the ends of bones where they come together to form joints. Healthy cartilage in our joints makes it easier to move. It allows the bones to glide over each other with very little friction. Articular cartilage can be damaged by injury or normal wear and tear
Articular cartilage
Articular cartilage is made up of
thin layer of hyaline cartilage
what do the 2 layers of periosteum do?
- outer fibrous protects. 2. Inner is for repairs, growth and nutrition of osseous tissue
Marrow/ Medullary Cavity
contains yellow and sometimes red marrow
Lines medullary cavity
endosteum
4 types cells in bone tissue
osterprogenitor. 2. osteoblast 3. osteocytes. 4. osteoclasts
osterprogenitor
Osteoprogenitor cells, also known as osteogenic cells, are stem cells located in the bone that play a prodigal role in bone repair and growth. These cells are the precursors to the more specialized bone cells (osteocytes and osteoblasts) and reside in the bone marrow
osteoblast
are the cells that form new bone. They also come from the bone marrow and are related to structural cells. They have only one nucleus. Osteoblasts work in teams to build bone. They produce new bone called “osteoid” which is made of bone collagen and other protein.
osteoclasts
is a type of bone cell that breaks down bone tissue. This function is critical in the maintenance, repair, and remodelling of bones of the vertebral skeleton.
osteocytes
Osteocytes derive from osteoblasts, or bone-forming cells, and are essentially osteoblasts surrounded by the products they secreted. a cell that lies within the substance of fully formed bone. It occupies a small chamber called a lacuna, which is contained in the calcified matrix of bone. Osteocytes derive from osteoblasts, or bone-forming cells, and are essentially osteoblasts surrounded by the products they secreted.
Monocytes
wandering immune cells that makes osteoclasts
Hydroxy apatite. Magnesium hydroxide. Sulfate.. Calcium carbonate
What minerals make up bone
Framework of bone created within
collagen fibres
Osteon
principle unit of compact bone made of concentric rings of matrix called Lamella
Where are osteocytes found?
Lacuna
a small space containing an osteocyte in bone or chondrocyte in cartilage
Lacuna