Vessels and Nerves | Classification of Bones Flashcards
True or False: Long bones and many flat and irregular bones have a conspicuous nutrient artery and vein
True
Nutrient artery and vein passes through
Nutrient foramen
When vessels reach the marrow cavity it divides into
Proximal and Distal brances
What will happen if the proximal and distal branches subdivides
It will supply the bone marrow and the adjacent cortical bone
These arteries supply the extremities of long bones and much of the compact bone
Periosteal arteries and veins
Presence of mature lamellar bone tissue outside of the bones that form the skeleton
Heterotopic bones
Define by position and may be located anywhere in the body
Heterotopic bones
Example of Heterotopic bones
Os penis or baculum
Five categories of bones
Long, Short, Sesamoid, Flat and Irregular bones
Longer than they are wide
Long bones
Where do fractures sometimes occur on the long bones
At the physis
Cuboidal shape with six surfaces to irregularly compressed rods with only one flat, articular surface
Short bones
Present near freely moving joints
Sesamoid bones
Function of Sesamoid Bones
To protect tendons at the places where greatest friction is developed
Relatively thin and flat; Structure is like a cancellous bone sandwich that consists of two thin plates of compact bone separated by a layer of cancellous bone
Flat bones
Do not fit into the long, short, or flat category. They either have characteristics of more than one of the other categories or they have a truly irregular shape
Irregular bones
Example of Long bone
Femur (thigh bone), Humerus (upper arm bone), Tibia (shin bone), Fibula (lower leg bone), Ulna
Example of Short bone
Carpus and Tarsus
Example of Irregular bone
Vertebrae, Caudal base of skull
Example of Sesamoid bone
Patella or “knee cap”
