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Related Concept Videos

The Auditory Ossicles01:11

The Auditory Ossicles

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The auditory ossicles of the middle ear transmit sounds from the air as vibrations to the fluid-filled cochlea. The auditory ossicles consist of two malleus (hammer) bones, two incus (anvil) bones, and two stapes (stirrups), one on each side. These bones develop during the fetal stage and are the ones to ossify first. They are fully mature at birth and do not grow afterward.
The aptly named stapes look very much like a stirrup. The three ossicles are unique to mammals, and each plays a role in...
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Anatomy of the Ear01:16

Anatomy of the Ear

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Auditory sensation, commonly called hearing, involves the transformation of sonic waves into neural impulses facilitated by the structures of the auditory organ. The prominent, flesh-like structure on the side of the head, called the auricle, directs sound waves towards the auditory canal. The auricle is often mislabeled as the pinna, a term more aligned with mobile structures like a feline's external ear. The auditory canal penetrates the cranium via the external auditory meatus of the...
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Cranial Bones: Lateral View01:27

Cranial Bones: Lateral View

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The lateral view of the cranium is dominated by temporal, sphenoid, and ethmoid bones.
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...
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Respiratory System Abnormal Finding I: Inspection and Percussion01:30

Respiratory System Abnormal Finding I: Inspection and Percussion

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Respiratory system abnormalities are a significant concern in healthcare due to their potential to indicate underlying severe conditions like Chronic Obstructive Pulmonary Disease (COPD), asthma, and pneumonia. These abnormalities can often be detected through physical examination methods like inspection and percussion.
Inspection Findings
During an inspection, several findings may suggest the presence of respiratory distress or disease. Pursed-lip breathing, where exhalation is slowed by...
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Spongy Bone01:09

Spongy Bone

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All bones comprise an outer layer of compact bone, and an interior made up of spongy bone tissue, also called cancellous or trabecular bone. In long bones, spongy bone tissue is mainly found in the interior of the epiphyses (broad ends of the bone).
Spongy bone is more porous, and less dense compared to compact bone. It is composed of concentric lamellae that are arranged irregularly to form the trabecular network. In some bones, the spaces between trabeculae contain red marrow, where...
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Respiratory System Abnormal Finding II: Palpation and Auscultation01:31

Respiratory System Abnormal Finding II: Palpation and Auscultation

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In assessing respiratory abnormalities, palpation and auscultation are critical tools for detecting and interpreting various pathophysiological changes. These techniques provide insight into underlying disorders by evaluating tactile sensations and sounds produced by the respiratory system.
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During a respiratory assessment, palpation can reveal several vital abnormalities:
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Related Experiment Video

Updated: Dec 10, 2025

Dissection of the Auditory Bulla in Postnatal Mice: Isolation of the Middle Ear Bones and Histological Analysis
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Dissection of the Auditory Bulla in Postnatal Mice: Isolation of the Middle Ear Bones and Histological Analysis

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Pneumatized middle ear ossicle - A normal variant.

Alok A Bhatt1, Amit Desai1, Sukhwinder J S Sandhu1

  • 1Mayo Clinic, 4500 San Pablo Road, Jacksonville, FL 32204, United States of America.

Clinical Imaging
|August 30, 2020
PubMed
Summary
This summary is machine-generated.

Recognizing normal anatomy prevents misdiagnosis. This case series highlights the pneumatized ossicle, a rare anatomical variant of the middle ear, important for accurate medical imaging interpretation.

Keywords:
Middle earMiddle ear ossicleNormal variantPneumatized incus

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Area of Science:

  • Radiology
  • Anatomy
  • Otology

Background:

  • Familiarity with normal anatomic variants is crucial to avoid misinterpreting them as pathology.
  • Middle ear ossicles exhibit diverse morphology, which can be affected by congenital syndromes, chronic ear infections, or cholesteatoma.

Purpose of the Study:

  • To describe the imaging appearance of the pneumatized ossicle.
  • To emphasize the importance of recognizing this rare normal anatomic variant.

Main Methods:

  • Case series review.
  • Analysis of imaging findings.

Main Results:

  • The study identifies and describes the imaging characteristics of the pneumatized ossicle.
  • This variant can be mistaken for pathology if not recognized.

Conclusions:

  • The pneumatized ossicle is a rare normal anatomic variant of the middle ear.
  • Radiologists and clinicians should be aware of this variant to ensure accurate diagnosis and avoid unnecessary interventions.