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Related Concept Videos

Nose and Nasal Cavity01:24

Nose and Nasal Cavity

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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 upper respiratory tract plays a vital role in the respiratory system, comprising several structures that facilitate air intake and prepare air for the lungs. It also serves as the first line of defense against pathogens and particles. This tract includes the nose and nasal cavity, the oral cavity, the paranasal sinuses, and the pharynx, each with specific functions and features.
Nose and nasal cavity
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The lateral view of the cranium is dominated by temporal, sphenoid, and ethmoid bones.
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Chronic Pharyngitis01:23

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Chronic pharyngitis refers to persistent inflammation of the pharyngial mucosa.
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The cranial part of the parasympathetic division plays a crucial role in regulating the visceral functions of the head and specific structures in the neck, thoracic, and abdominopelvic cavities. Preganglionic fibers of the parasympathetic division exit the brain through cranial nerves III (oculomotor), VII (facial), IX (glossopharyngeal), and X (vagus), delivering parasympathetic output to the respective visceral structures.
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Epistaxis, or nosebleeds, occurs when small, swollen blood vessels in the nasal mucous membrane rupture. Typically, the anterior septum is the primary site of occurrence.
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Related Experiment Video

Updated: Feb 21, 2026

Identification of OTX1 and OTX2 As Two Possible Molecular Markers for Sinonasal Carcinomas and Olfactory Neuroblastomas
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Chapter 9: Benign sinonasal neoplasms.

Patrick T Hennessey, Douglas D Reh

    American Journal of Rhinology & Allergy
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    Benign sinonasal neoplasms present with common symptoms like nasal obstruction. Accurate diagnosis through clinical, histological, and radiographic evaluation is crucial for effective treatment planning.

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    Area of Science:

    • Otolaryngology
    • Pathology
    • Radiology

    Background:

    • Benign sinonasal neoplasms encompass diverse tumors.
    • Symptoms include nasal obstruction, anosmia, rhinorrhea, and epistaxis.
    • Accurate diagnosis is vital for appropriate management.

    Purpose of the Study:

    • To review benign sinonasal neoplasms.
    • To discuss clinical presentation, diagnostic findings, and treatment options.

    Main Methods:

    • Review of literature on benign sinonasal neoplasms.
    • Analysis of typical clinical, histological, and radiographic features.
    • Summary of current treatment strategies.

    Main Results:

    • Benign sinonasal neoplasms share common presenting symptoms.
    • Distinctive histological and radiographic findings aid in diagnosis.
    • Treatment varies based on tumor type and characteristics.

    Conclusions:

    • Comprehensive evaluation is key for diagnosing benign sinonasal neoplasms.
    • Understanding varied presentations ensures timely and correct treatment.
    • Effective management relies on accurate diagnosis and tailored therapeutic approaches.