Related Experiment Video
Updated: Jun 18, 2026

07:16
Finite Element Analysis Model for Assessing Expansion Patterns from Surgically Assisted Rapid Palatal Expansion
Published on: October 20, 2023
[Change of airflow patterns inside the maxillary sinus influenced by uncinate process]
1Otorhinolaryngology Hospital of the First Affiliated of Sun Yat-sen University, Guangzhou 510080, China.
Summary
A normal uncinate process allows active airflow within the maxillary sinus, facilitating air exchange. An abnormal uncinate process impedes this airflow, impacting sinus ventilation.
Area of Science:
- Anatomy
- Physiology
- Biomedical Engineering
Context:
- The maxillary sinus is a paranasal sinus crucial for respiratory function.
- The uncinate process is an anatomical structure within the nasal cavity that may influence sinus airflow.
- Understanding airflow dynamics is vital for diagnosing and treating sinus-related conditions.
Purpose:
- To investigate how the uncinate process affects airflow patterns within the maxillary sinus.
- To compare airflow in sinuses with normal versus abnormal uncinate processes.
- To evaluate the impact of uncinate process excision on maxillary sinus airflow.
Summary:
- Airflow in maxillary sinuses with a normal uncinate process was actively exchanging, with smoke dissipating in approximately 11.4 seconds.
- Sinuses with an abnormal uncinate process showed inductively exchanging airflow, with smoke dissipation taking significantly longer (24.2 seconds).
- Excision of the uncinate process resulted in inactive airflow patterns in all studied maxillary sinuses.
Impact:
- Normal uncinate process anatomy is essential for physiological air commutation within the maxillary sinus.
- Findings suggest that uncinate process morphology plays a critical role in maintaining healthy sinus ventilation.
- This research provides insights into the biomechanics of sinus airflow, relevant for surgical interventions and understanding sinus pathologies.
Related Concept Videos
Anatomy of Respiratory System I: Upper Respiratory Tract
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
The nose and nasal cavity represent the main external openings of the respiratory tract.
Nose and nasal cavity
The nose and nasal cavity represent the main external openings of the respiratory tract.
Nose and Nasal Cavity
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...
Suctioning the Nasopharyngeal Airway
Nasopharyngeal suctioning is a procedure to remove secretions from the upper part of the respiratory tract that the patient cannot clear independently. It helps maintain airway patency and prevents complications such as aspiration pneumonia.
Equipment Required
Equipment Required
Factors Affecting Pulmonary Ventilation
Besides the pressure difference between the external environment and the lungs, the airflow rate and ease of pulmonary ventilation are also influenced by three other factors: surface tension of the fluid in the alveoli, compliance of the lungs, and airway resistance.
Alveolar Surface Tension
The alveolar fluid lines the luminal surface of the alveoli and exerts a force called surface tension. This force is caused by the polar water molecules in the liquid being more strongly attracted to each...
Alveolar Surface Tension
The alveolar fluid lines the luminal surface of the alveoli and exerts a force called surface tension. This force is caused by the polar water molecules in the liquid being more strongly attracted to each...
Application of Integration: Problem Solving
The process of breathing involves the periodic intake and expulsion of air, known as the respiratory cycle, which typically lasts about five seconds. Modeling the volume of air inhaled into the lungs as a function of time provides insight into both the dynamics and efficiency of pulmonary ventilation. This volume is determined by integrating the airflow rate over time, which captures the cumulative effect of air entering the lungs.Sinusoidal Model of AirflowAirflow during respiration is not...
Cranial Bones: Lateral View
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...
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...
