Skeletal System Flashcards
What is spongy bone?
The porous end parts of the bone
How many bones do adults have?
206
The white outer layer of bone
Periosteum
Skeletal system lubricant
Synovial fluid
A place where two or more bones come together
Joint
How many bones does an infant have?
350 (mostly composed of cartilage)
The three types of bone cells are
Osteocytes - mature bone cells Osteoblasts - build new bone, repair breaks Osteoclasts - destroy old/damaged bone
“Pillow” for absorbing shock
Bursae
Runs through compact bone Contains blood vessels and nerves
Haversian Canals
What are the different types of joints and examples of where they’re found?
Pivot joints - base of skull with spinal cord Ball and socket joints - shoulder and hip Hinge joint - knees and elbows Gliding joint - wrist and ankle Saddle joint - thumb and fingers Fixed joint - adult skull
Bones grow width wise ____
Just under the periosteum
What are the two types of bone marrow and their function?
RED bone marrow - produces red blood cells and platelets YELLOW bone marrow - stores fat
The hard dense layer of bone
Compact bone
What are the functions of the skeletal system?
Supports the body, protects the organs, provides movement, stores minerals
What is cartilage?
Connective tissue It has no blood vessels and is very flexible Found more in babies
