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Definition of the noun Dermal bone
What does Dermal bone mean as a name of something?
- Bone derived from intramembranous ossification, defining essential components of the vertebrate skeleton including the skull, jaws, gills, fins, and exoskeleton.
Dermal bone: A dermal bone or membrane bone is a bony structure derived from intramembranous ossification forming components of the vertebrate skeleton including the skull, jaws, gills, fins and exoskeleton. In contrast to endochondral bone, dermal bone does not form from cartilage that then calcifies. Dermal bone is formed within the dermis and grows by accretion only – the outer portion of the bone is deposited by osteoblasts.
Printed dictionaries and other books with definitions for Dermal bone
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SAT Subject Test Biology E/M (2017)
Bone produced through the latter process is called dermal bone; the bones of the skull are examples of this. In replacement bone, such as in the long bones of the legs and arms, osteoblasts replace the cartilage that has already formed.
by Leonard B. Radinsky
The fossil ostracoderms indicate that bone first evolved as an external rather than an internal skeleton, and, because it was deposited in the skin, ostracoderm bone is called dermal bone. In many ostracoderms, the outer layer of the dermal ...
A Dictionary of Biology (1957)
by Michael Abercrombie, Clarence James Hickman, M. L. Johnson
A dermal bone.
Dictionary of Zoology (1999)
by Sudhir Pradhan
DERMAL BONE A bone which develops from the mesenchyme of the dermis. Such bones are usually present in dermatocranium of tetrapod skull. DERMAL PLATE Underneath the dermis, many reptiles possess specialised scales which form ...
A Dictionary of Science (2017)
by Jonathan Law
(dermal bone) *Bone formed directly in connective tissue, rather than by replacing cartilage (compare CARTILAGE BONE). Some face bones, skull bones, and part of the clavicle are membrane bones. Small areas of membrane become ...
by Donald Venes
SYN: dermal bone; intramembraneous ...
by Christopher G. Morris, Academic Press
dermal bone Anatomy, any bone that ossifies directly from mesenchyme, rather than by replacement of a preceding cartilaginous structure. Also ...
by Michael Allaby
dermal bone See BONE. dermal denticle See PLACOID SCALE. dermatocranium See CRANIUM. Derryan See ATOKAN. desalination A series of processes whereby salt water is rendered potable. Desdemona (Uranus ...
by Robert Hine, Daintith
dermal bone /der-măl/ See membrane bone. Dermaptera /der-map-tĕ-ră/ A small order of nocturnal ...
Encyclopaedia britannica (1911)
a dictionary of arts, sciences, literature and general information by Hugh Chisholm
the squamozygomatic part is a dermal bone, while the styloid process is a part of the second visceral arch. The mastoid process is not present at birth, but appears ...
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Dermal bone Meaning
Video shows what dermal bone means. Bone derived from intramembranous ossification, defining essential components of the vertebrate skeleton including the ...
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