I. Osteology - Bone Classification. (Pg. 3) Flashcards
What are the six more commonly used classifications of normal bone?
long bones, short bones, flat bones, irregular bones, paranasal sinus or pneumatic bones and sesamoid bones
Which classifications of bone are characteristic of the appendicular skeleton?
long bones, short bones and sesamoid bones
What is the characteristic feature of a long bone?
it is longer than it is across (length greater than breadth)
What are the names given to the parts of a long bone?
the diaphysis (shaft) and typically two epiphyses (extremities)
What is the primary characteristic of short bones?
they are essentially cuboidal
What are examples of short bones?
most of the bones of the carpus and tarsus
What is the characteristic of sesamoid bone?
the bone develops within a tendon
What are consistent examples of sesamoid bones?
patella and pisiform
Which classifications of bone are characteristic of the axial skeleton?
flat bones, irregular bones and paranasal sinus or pneumatic bones
What are flat bones?
a thin layer of spongy bone is sandwiched between two layers of compact bone
What are examples of flat bones?
the parietal bone and sternum
What is the characteristic of irregular bone?
numerous projections or irregular outlines
What are the examples of irregular bone?
the vertebrae and innominate bones
What is characteristic of pneumatic bone?
air spaces within the bone
What are examples of pneumatic bone?
frontal, ethmoid, maxilla, sphenoid and temporal
