- For the record label, see
Incus Records.
The incus or anvil is the
anvil-shaped
small
bone or
ossicle in the
middle ear. It connects the
malleus to the
stapes. It was first described by
Alessandro Achillini of Bologna.
The incus transmits sound vibrations from the
malleus to the
stapes. The incus only exists in mammals, and
is derived from a reptilian upper jaw bone, the
quadrate bone. Embryologically it is derived from the first
pharyngeal arch along with the rest of the bones of
mastication, such as the
maxilla and
mandible.
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Additional
images
Head and neck of a human embryo eighteen
weeks old, with Meckel’s cartilage and hyoid bar
exposed.
|
External and middle ear, opened from the
front. Right side.
|
Chain of ossicles and their ligaments, seen
from the front in a vertical, transverse section
of the tympanum.
|
|
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See also
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References
- ^
hednk-023 —
Embryology at UNC
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External links
The Anatomy Wiz Incus
