Table of Contents
What makes up the nasal vestibule?
The most anterior part of the nasal cavity is the nasal vestibule. The vestibule is enclosed by the cartilages of the nose and lined by the same epithelium of the skin (stratified squamous, keratinized).
Is the Cribriform plate part of the nasal septum?
It is a part of ethmoid bone and supports the olfactory bulb, which lies in the olfactory fossa. It is perforated by foramina for the passage of the olfactory nerves and the anterior ethmoidal nerves to the upper part of the nasal septum, the latter of those to the superior nasal concha.
Is nasal vestibule cancer?
The nasal vestibule is the area just inside the nostril. Most tumours that develop in the nasal vestibule are squamous cell carcinomas (SCC) of the skin. As a result, these tumours are treated like non-melanoma skin cancer.
What is the Cribriform plate?
The cribriform plate is a transverse plate, pierced by many small cribriform foramina, that forms the anteroventral wall of the cranial cavity. From: The Dissection of Vertebrates (Second Edition), 2011.
What type of epithelium is in the vestibule of the nose?
squamous epithelium
The nasal vestibule is completely lined by squamous epithelium. It is a stratified epithelium composed of basal cells along the basal lamina and several layers of squamous cells, which become progressively flatter toward the luminal surface.
Does septoplasty weaken the nose?
A complication of septoplasty or rhinoplasty is a saddle nose deformity. When there is a loss of too much septal cartilage or damage to the septum cartilage caused by surgical errors or complications, the nasal bridge can collapse as a result.
What is the main function of cribriform plate?
Function. The cribriform plate is perforated by olfactory foramina, which allow for the passage of the olfactory nerves to the roof of the nasal cavity. This conveys information from smell receptors to the brain.
What nerve goes through cribriform plate?
The cribriform plate is here. The filaments of the olfactory nerve, here they are in close-up, pass through the cribriform plate and run just beneath the mucous membrane to reach nerve endings in this olfactory area on the lateral and medial surfaces of the nasal cavity.
Where is the cribriform plate located in the nasal cavity?
The cribriform plate is part of the ethmoid bone. It forms a portion of the roof of the nasal cavity. At the level of the superior meatus, the sphenopalatine foramen is located. This hole allows communication between the nasal cavity and the pterygopalatine fossa.
What makes up the vestibule of the nasal cavity?
The other part of the nasal cavity, which is lined by the respiratory epithelium, is called nasal cavity proper. Inside the vestibule are small hairs called vibrissae, which filter dust and other matter that are breathed in.
Where does the cribriform plate support the olfactory bulb?
It is a part of ethmoid bone and supports the olfactory bulb, which lies in the olfactory fossa. It is perforated by foramina for the passage of the olfactory nerves and the anterior ethmoidal nerves to the upper part of the nasal septum, the latter of those to the superior nasal concha. The lateral lamella forms the lateral border of the plate.
What is the function of the cribriform plate?
Cribriform plate. The cribriform plate is a sieve-like structure between the anterior cranial fossa and the nasal cavity. It is a part of ethmoid bone and supports the olfactory bulb, which lies in the olfactory fossa. It is perforated by foramina for the passage of the olfactory nerves and the anterior ethmoidal nerves to…