Nasal Cavity
Nasal Cavity - Related Videos
01:24
Nose and Nasal Cavity
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2025
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...
08:46
Nose, Sinuses, Oral Cavity and Pharynx Exam
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2023
Source: Richard Glickman-Simon, MD, Assistant Professor, Department of Public Health and Community Medicine, Tufts University School of Medicine, MA This video provides an overview of sinus, nose, and throat examinations. The demonstration begins with a brief overview of the anatomy of the region. The upper third of the nose is bony, and the bottom two-thirds are cartilaginous. Air entering the nares passes through the nasal vestibules and into the narrow passageway between the nasal septum...
09:19
Isolating Nasal Olfactory Stem Cells from Rodents or Humans
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Cited by 98 •
2011
We describe here a method for biopsying olfactory mucosa from rat and human nasal cavities. These biopsies can be used for either identifying molecular anomalies in brain diseases or isolating multipotent adult stem cells that can be utilized for cell transplantation in animal models of brain trauma/disease.
01:11
Oral Cavity
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2024
The oral cavity, or the mouth, is a complex structure in humans that plays a vital role in our day-to-day lives. Its role is not only in chewing and swallowing food; it also plays a role in speech and facial expressions. Teeth: The teeth are the hardest structures in our bodies. Humans have two sets of teeth throughout their lifetime: deciduous (baby) teeth and permanent teeth. Each tooth consists of several parts: the crown (visible part), the root (embedded in the jaw), enamel (hard outer...
05:59
Nasal Wipes for Influenza A Virus Detection and Isolation from Swine
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Cited by 19 •
2015
The authors present a protocol to collect swine nasal wipes to detect and isolate influenza A viruses.
FAQs
The ridged surfaces increase contact between incoming air and the mucosa. This arrangement gives mucus and hairs more opportunity to trap particles, while nearby blood vessels warm the air and secretions add moisture. Together, these features condition inhaled air before it continues through the respiratory system and help limit the passage of unwanted material.
Mucociliary clearance depends on coordinated ciliary movement across the mucosa. Hairs and mucus capture particles, and the cilia then move this material toward the throat, where it can be removed. This directional transport links particle trapping with airway protection and provides a biological mechanism for clearing material from the nasal passages.
The nasal cavity connects sensory detection with early protection at an entry point to the body. Its role in olfaction supports the study of smell, while local immune defense helps explain how the airway responds to material encountered during inhalation. Examining both functions shows how one region contributes to sensing and protection.
Pathogens and pollutants may enter the body through inhaled air, making the nasal cavity an important site for studying early exposure and defense. Mucus, hairs, secretions, and ciliary transport provide several protective features that can capture or move material away. Research in this area helps connect environmental entry with airway protection and disease processes.
Researchers can examine olfaction, mucociliary clearance, local immune defense, and respiratory conditioning through the nasal cavity. These processes reveal how airway structure supports smell, particle removal, and protection during inhalation. Studying them also helps relate normal biology to conditions in which airflow, smell, or the handling of inhaled material becomes impaired.
Its structure and coordinated functions provide a framework for investigating sinus disease and disorders that impair airflow or smell. Researchers can relate ridged surfaces, mucosal activity, ciliary transport, and sensory function to changes in airway performance. This connection makes the nasal cavity useful for interpreting how structural or functional disruption affects respiratory and olfactory outcomes.
The nasal cavity is relevant to inhaled therapeutic research because its internal surfaces, mucosa, secretions, and clearance activity influence material entering the airway. Understanding these features helps researchers consider how inhaled treatments interact with the nasal passage. The same biological mechanisms that protect the airway can therefore inform studies of therapeutic delivery.