bone types

Question 1

what are long bones

Answer 1

• femora, metacarpals, humerii
• longer than they are wide
• slightly curved
• distribute stress evenly
• cortical bone throughout the shaft
• trabecular bone at the epiphyses

Question 2

blood supply in bones

Answer 2

bones require good blood supply as the calcified matrix does not allow diffusion to happen

Question 3

what are short bones

Answer 3

• mainly trabecular
• thin layer of cortical
• cube shaped
• carpals and tarsals

Question 4

what are flat bones

Answer 4

• cranial, sternum, ribs
• protection and attachment
• thin layer of cortical bone enclosing the trabeculae

Question 5

what are irregular bones

Answer 5

• vertebrae
• bones that don’t fit the other categories
• vary in terms of c:t ratio
• ethmoid bone (separates nasal cavity from brain- located in skull)

Question 6

what are sesamoid bones

Answer 6

• form within tendons
• some are present within everyone e.g. patella
• others are ‘normal’ variants