Related Experiment Video
Updated: Jun 11, 2025
Dissection of the Auditory Bulla in Postnatal Mice: Isolation of the Middle Ear Bones and Histological Analysis
Published on: January 4, 2017
Morphologic Examination of Ossicula Auditus in Different Ruminants
İsmail Demircioğlu1, Funda Aksünger Karaavci2
1Department of Anatomy, Faculty of Veterinary Medicine, Harran University, Eyyubiye, Sanliurfa, Turkey.
Background:
The ossicula auditus is the structure that transmits vibrations from the tympanic cavity to the auris interna. This assembly is formed by three ossicles: the malleus, incus and stapes. In addition, the bone that exists as os lenticulare in humans exists as processus lenticulare in most mammals.
Objective:
To our knowledge, no in-depth study has been published on the ossicula auditus of gazelles. This study aims to provide a comparative study of the morphology of the auditory ossicles in sheep, goats and gazelles.
Methods:
Ossicula auditus from six adult Awassi sheep, six hair goats and six gazelles was examined and photographed under a stereomicroscope.
Results And Conclusion:
It was determined that the ossicula auditus of gazelle, hair goat and Awassi sheep consisted of malleus, incus and stapes. In the species examined, it was observed that the articular surface on the caput mallei, the malleus protrusions and the distal part of the manubrium mallei differed between species. It was determined that the incus bone consists of a body and two crus. As an important morphological difference, the proc. lenticulare was found to be on the crus breve in all three species. It was determined that the stapes bone was quadrangular in the species examined, especially in goats, but this quadrangular shape, which is specific to ruminants, was not fully formed in other species. As a result, it was determined that the ossicula auditus of gazelle, hair goat and Awassi sheep showed morphologically different characteristics.
Related Concept Videos
01:11The Auditory Ossicles
The aptly named stapes look very much like a stirrup. The three ossicles are unique to mammals, and each plays a role in...
01:29Bone Formation by Intramembranous Ossification
The process begins when mesenchymal cells in the embryonic skeleton gather together and differentiate into osteogenic cells, which then develop into ...
01:26Bone Markings
Articulating Projections
Articulating projections are found where two bones meet to form a joint. These structures are usually found at the ends of bones. The largest articulation is a rounded projection called the head, supported by a narrow neck at the ends of...
01:18Classification of Bones
Long and Short Bones
The appendicular skeleton, particularly the upper and lower limbs, is primarily made of long and short bones. The...
01:27Cranial Bones: Lateral View
The temporal bone forms the lower lateral side of the skull. The temporal bone is subdivided into several regions. The flattened upper portion is the squamous portion of the temporal bone. Below this area and projecting anteriorly is the zygomatic process of the temporal bone, which forms the posterior portion of the zygomatic arch. Posteriorly is the mastoid portion of the temporal bone. Projecting...
01:22Sutures of the Skull
Sutures are immobile joints between adjacent bones of the skull. The narrow gap between the bones is filled with dense, fibrous connective tissue that unites the bones. The long sutures located between the skull bones are not straight but instead follow irregular, tightly twisting paths. These twisting lines tightly...