Dermal bone: Difference between revisions

61 bytes removed ,  10 years ago
"However, these traits have been lost in higher vertebrates." Incorrect. Found in stuctures in human anatomy
m (referred to as membrane bone; clearified difference from intramembranous and endochondral ossification. Stated it is formed in the dermis, grows by accretion as well as examples)
("However, these traits have been lost in higher vertebrates." Incorrect. Found in stuctures in human anatomy)
A '''dermal bone''' (membrane bone)- the pattern and form of bones derived from [[intramembranous ossification]], (versus endochondral bone formed by endochondral ossification) define essential components of the [[vertebrate]] skeleton including the skull, jaws, gills, fins and exoskeleton.
 
The function of dermal bone is conserved throughout vertebrates, varying in shape and numbers of bones in the [[skull roof]] and postcranial structures. In [[bony fish]], dermal bone is found throughout the body in the fin rays and scales. However,Dermal thesebone traitsis haveformed beenwithin lostthe inDermis; higherGrows by accretion only; outer portion of the bone depositing more by use of osteocytes vertebrates.
 
Dermal bone is formed within the Dermis; Grows by accretion only; outer portion of the bone depositing more by use of osteocytes
 
(e.g. Clavicle, Patella)