Joints & Fractures Warm Up Flashcards
How much movement do Ampiarthroses joints allow?
How much movement do synarthroses joints allow?
-Ampiarthroses permit only slight degrees of movement.
-Synarthroses permit no movement.
What are irregular bones?
-They are bones that vary in shape and structure and don’t fit into the other categories (Flat, Long, Short, or Sesamoid)
(Ex. Coxal Bones)
What kind of tissue is the forerunner of long bones in the embryo?
-Hyaline Cartilage
How can you tell if a bone’s length is still increasing?
-The epiphyseal plate is present.
What factors determine where the bone matrix is to be remodeled?
-Stresses of gravity.
-Muscle pull on the skeleton.
What is a compound fracture?
-The broken bone is exposed to the outside.
What is a green-stick fracture?
-A fracture that is more common in children.
(More common in matrix)
(More flexible)
What are the small cavities in bone tissue where osteocytes are found called?
-Lacunae.
What is a commuted fracture?
-A bone fracture where the bone is broken into many fragments.
What fracture is common in osteoporotic bones?
-Compression Fracture.
What are the four stages of bone fracture healing?
-Hematoma formation
-Fibrocartilage callus formation
-Bony callus formation
-Bone remodeling
What is ossification?
-Bone formation.
