Temporal Bone Dissection
Temporal Bone Dissection - Related Videos
07:17
Murine Hind Limb Long Bone Dissection and Bone Marrow Isolation
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Cited by 293 •
2016
Here we present a protocol for the dissection of hind limb long bones (femurs and tibiae) from the laboratory mouse. We further describe a rapid technique for bone marrow isolation from these bones that utilizes centrifugation for removal of bone marrow from the bone marrow space.
11:52
Temporal Ordering of Dynamic Expression Data from Detailed Spatial Expression Maps
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2017
The segmentation clock drives oscillatory gene expression across the pre-somitic mesoderm (PSM). Dynamic Notch activity is key to this process. We use imaging and computational analyses to extract temporal dynamics from spatial expression data to demonstrate that Delta ligand and Notch receptor expression oscillate in the vertebrate PSM.
06:42
Extracting the Cochlea from a Human Temporal Bone: A Cadaveric Protocol
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2023
This article presents a reliable method for extracting the human cochlea from the cadaver temporal bone by drill-out while following distinct anatomical landmarks.
07:40
Dissection of the Auditory Bulla in Postnatal Mice: Isolation of the Middle Ear Bones and Histological Analysis
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Cited by 13 •
2017
We present a protocol to isolate the auditory bulla, capsule, and ossicles from postnatal mice for whole mount and histological analysis.
12:02
Whole Mount Dissection and Immunofluorescence of the Adult Mouse Cochlea
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Cited by 85 •
2016
We present a method to isolate the adult organ of Corti as three intact cochlear turns (apex, middle, and base). We also demonstrate a procedure for immunostaining with fluorescently tagged antibodies. Together these techniques allow the study of hair cells, supporting cells, and other cell types found in the cochlea.
FAQs
Layer-by-layer removal reveals the temporal bone’s enclosed structures in their anatomical relationships while helping preserve important landmarks. This gradual exposure connects the external auditory canal and middle ear region with deeper structures such as the cochlea, vestibular apparatus, facial nerve, and internal auditory canal. The resulting three-dimensional view supports anatomical study and safer interpretation of skull-base anatomy.
Microscopy provides magnified visualization of small anatomical landmarks, while specialized drills permit controlled removal of bone surrounding delicate structures. Together, they allow the dissector to distinguish successive layers and maintain the relationships among the ossicles, facial nerve, cochlea, vestibular apparatus, and internal auditory canal. This combination makes the technique valuable for detailed surgical anatomy and procedural planning.
The key relationships include the external auditory canal and middle ear ossicles in relation to deeper hearing and balance structures. The facial nerve, cochlea, vestibular apparatus, and internal auditory canal also serve as critical landmarks within the temporal bone. Preserving and recognizing these structures helps learners connect local anatomy with ear surgery and skull-base approaches.
A basic workflow uses a microscope and specialized drills to remove the temporal bone progressively, exposing structures in successive layers. During the process, the dissector identifies and preserves landmarks including the external auditory canal, ossicles, facial nerve, cochlea, vestibular apparatus, and internal auditory canal. The outcome is an anatomical preparation that demonstrates the region’s three-dimensional organization.
In medical education, the technique links three-dimensional temporal bone anatomy with the clinical procedures that depend on it. For surgical planning, the exposed landmarks help relate ear surgery and skull-base approaches to the structures that must be identified and preserved. This connection supports a more practical understanding of anatomy than studying isolated structures alone.
Temporal bone dissection supports research on otologic disease, surgical safety, and anatomical variation. By exposing the relevant structures and their spatial relationships, investigators can examine how normal anatomy differs among specimens and how those differences may affect operative approaches. The method therefore contributes both anatomical evidence and clinically relevant context for studying the ear and skull base.