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Related Concept Videos

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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Nose and Nasal Cavity01:24

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The nose is composed of an observable exterior segment (external nose) and an internal segment within the skull known as the nasal cavity (internal nose). The external nose, visible on the face, consists of a framework of bone and hyaline cartilage enveloped in skin and muscle and lined with a mucous membrane. This structure is supported by the frontal bone, nasal bones, and maxillary bone and is supplemented by a cartilaginous framework comprising the septal nasal cartilage, lateral nasal...
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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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Cranial Bones: Lateral View01:27

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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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Assessing Body Temperature - Tympanic membrane01:14

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Assessing tympanic membrane temperature involves using a tympanic membrane thermometer (TMT). Here is a step-by-step guide:
Step 1: Begin by practicing good hand hygiene to prevent the transmission of microorganisms.
Step 2: Turn on the thermometer and wait until the ready sign appears on the screen to ensure accurate measurement.
Step 3: Slide the probe cover in place to prevent cross-contamination.
Step 4: Instruct the patient to tilt their head to the side for comfort and check for cerumen...
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Temperature Measurement Sites01:14

Temperature Measurement Sites

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A thermometer measures body temperature. The common sites for measuring body temperature are the oral cavity, axillary region, temporal artery, and skin surface, such as the forehead, abdomen, and axilla. True core body temperature is assessed in the rectum, tympanic membrane, pulmonary artery, esophagus, and urinary bladder.
Oral: When assessing oral temperature, the thermometer tip should be placed under the tongue in the posterior sublingual pocket. It offers accurate readings and can be...
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Discovering Middle Ear Anatomy by Transcanal Endoscopic Ear Surgery: A Dissection Manual
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External ear anatomy and variations in neonates.

Saadet Erdem1, Zeliha Fazliogullari2, Ahmet Ural3

  • 1Faculty of Health Sciences, Bolu Abant Izzet Baysal University, Bolu, Turkey.

Congenital Anomalies
|June 25, 2022
PubMed
Summary

This study measured neonatal auricle dimensions and anomaly rates in 550 infants. Auricular anomalies were observed in both ears, highlighting the importance of early detection for clinical diagnosis and treatment.

Keywords:
anomalyauriclemorphometryneonate

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Area of Science:

  • Anatomy
  • Pediatrics
  • Medical Imaging

Background:

  • The auricle's aesthetic and functional importance necessitates understanding its normal morphology.
  • Auricular deformities in neonates can signify underlying congenital anomalies.
  • Standardized measurements are crucial for various medical and forensic applications.

Purpose of the Study:

  • To investigate normal neonatal auricle sizes, types of anomalies, and their prevalence.
  • To explore the relationship between neonatal auricular anomalies and hearing screening test results.
  • To establish reference data for gender-based morphometric differences in neonatal auricles.

Main Methods:

  • Morphometric analysis of auricle length, width, angle, and distance in 550 neonates.
  • Observation-based detection and classification of auricular anomalies.
  • Use of goniometer, digital caliper, and ruler for precise measurements.

Main Results:

  • Significant gender-based differences were found in neonatal auricle length and width.
  • Auricular anomalies were detected in 96 neonates (right ear) and 103 neonates (left ear).
  • Various types of anomalies were observed, underscoring the need for detailed classification.

Conclusions:

  • Establishing normal neonatal auricle parameters is vital for reconstructive surgery and device design.
  • Early recognition and documentation of auricular anomalies are essential for timely clinical intervention.
  • This study provides foundational data for diagnostic, forensic, and research purposes related to the neonatal auricle.