Podcast
Questions and Answers
Which of the following structures is NOT part of the nasal turbinates?
Which of the following structures is NOT part of the nasal turbinates?
The inferior meatus provides an opening for the ostium of maxillary sinus.
The inferior meatus provides an opening for the ostium of maxillary sinus.
False
What are the primary functions of turbinates?
What are the primary functions of turbinates?
Guide airflow, heat air, humidify air
The __________ is a bony shelf of bone in the nasal cavity, usually having three on each side.
The __________ is a bony shelf of bone in the nasal cavity, usually having three on each side.
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Match the meatus with its notable contents:
Match the meatus with its notable contents:
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What is a common clinical sign of a fracture of the cribriform plate?
What is a common clinical sign of a fracture of the cribriform plate?
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The superior and middle conchae are part of the ethmoid bone.
The superior and middle conchae are part of the ethmoid bone.
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Which structure drains through the ethmoidal bulla?
Which structure drains through the ethmoidal bulla?
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The inferior conchae articulate laterally with their ipsilateral __________.
The inferior conchae articulate laterally with their ipsilateral __________.
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Match the following clinical conditions with their descriptions:
Match the following clinical conditions with their descriptions:
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What consequence may arise from a turbinectomy?
What consequence may arise from a turbinectomy?
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The inferior nasal conchae are part of the cranial skeleton.
The inferior nasal conchae are part of the cranial skeleton.
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Name one type of air cell found in the ethmoid bone.
Name one type of air cell found in the ethmoid bone.
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What is the primary function of the turbinates in the nasal cavity?
What is the primary function of the turbinates in the nasal cavity?
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The nasal cavity extends from the anterior nares to the oropharynx.
The nasal cavity extends from the anterior nares to the oropharynx.
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Name the two types of cartilage found in the nose.
Name the two types of cartilage found in the nose.
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The nasal septum divides the nasal cavity into __________ halves.
The nasal septum divides the nasal cavity into __________ halves.
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Match the components of the nasal cavity to their description:
Match the components of the nasal cavity to their description:
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Which of the following structures does NOT form part of the nasal septum?
Which of the following structures does NOT form part of the nasal septum?
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The blood supply to the nasal cavity is exclusively provided by the carotid artery.
The blood supply to the nasal cavity is exclusively provided by the carotid artery.
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What is the primary educational material recommended for this course?
What is the primary educational material recommended for this course?
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What is the function of the Eustachian Tube?
What is the function of the Eustachian Tube?
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The paranasal sinuses serve to lighten the load of the cranium.
The paranasal sinuses serve to lighten the load of the cranium.
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What are the adenoids also known as?
What are the adenoids also known as?
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Which arteries contribute to Kiesselbach's plexus?
Which arteries contribute to Kiesselbach's plexus?
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The __________ is the part of the throat that connects the nasal cavity to the mouth.
The __________ is the part of the throat that connects the nasal cavity to the mouth.
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What can chronic paranasal sinusitis lead to?
What can chronic paranasal sinusitis lead to?
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The main function of Kiesselbach's plexus is to provide oxygen to the blood.
The main function of Kiesselbach's plexus is to provide oxygen to the blood.
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Match the tonsils with their locations:
Match the tonsils with their locations:
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What clinical condition is associated with Kiesselbach's plexus?
What clinical condition is associated with Kiesselbach's plexus?
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The sensory distribution of the nasal cavity is primarily provided by branches of the __________ nerve.
The sensory distribution of the nasal cavity is primarily provided by branches of the __________ nerve.
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What is the perceived sound when the Eustachian Tube opens during swallowing?
What is the perceived sound when the Eustachian Tube opens during swallowing?
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Match the following terms related to the nasal cavity with their descriptions:
Match the following terms related to the nasal cavity with their descriptions:
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Waldeyer's Ring is a group of lymphoid tissue aggregations in the oral cavity.
Waldeyer's Ring is a group of lymphoid tissue aggregations in the oral cavity.
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Study Notes
Overview of Nasal Cavity and Paranasal Sinuses
- Course conducted by Dr. Arman Rahman, MD, MPH, Ph.D.
- Duration approximately 45 minutes, associated with MDSA20200 Introduction to Respiratory Biology.
- Assessment includes end-of-trimester examination (100%), with component breakdown: Anatomy SAQs (30%), Physiology SAQs (20%), Physiology Essays (50%).
Anatomy Structure
- Nasal Cavity: Extends from anterior nares (nostrils) to posterior nares (choanae).
- Components of Nasal Septum: Made up of the perpendicular plate of the ethmoid bone, vomer bone, and septal cartilage.
- Lateral Walls: Contains superior, middle, and inferior turbinates, which are important for airflow regulation.
Turbinates and Meatuses
- Turbinates: Function to guide, heat, and humidify air. Comprises conchae, with three on each side.
- Meatuses: Spaces beneath turbinates where drainage occurs; includes superior, middle, and inferior meatuses with notable openings for ethmoidal air cells and the nasolacrimal duct.
Ethmoid Bone
- Contributes to the nasal cavity's structure and contains anterior, middle, and posterior air cells.
- Clinical relevance includes fractures leading to CSF rhinorrhoea or anosmia due to trauma.
Nasopharynx
- Extends from posterior nares to oropharynx and contains the Eustachian tube and adenoids.
- Eustachian Tube: Connects nasopharynx to middle ear, helps equalize pressure; dysfunction linked to middle ear infections.
Paranasal Sinuses
- Air-filled cavities that lighten the cranium, humidify inhaled air, and play a role in immune response.
- Kiesselbach's plexus located in Little's area contributes to nasal blood supply and is clinically significant for epistaxis (nosebleeds).
Clinical Insights
- Turbinate Hypertrophy: Treated with turbinectomy but may lead to Empty Nose Syndrome, characterized by paradoxical nasal obstruction.
- Eustachian Tube Dysfunction: Can lead to otitis media from chronic sinusitis.
Recommended Reading
- Moore’s Clinically Oriented Anatomy, focusing on chapters related to thorax and head for deeper anatomical understanding.
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Description
Explore the intricacies of the nasal cavity and paranasal sinuses in this lecture by Dr. Arman Rahman. Dive deep into the structure and function of the upper respiratory system, understanding its role in overall respiratory biology. Ideal for students enrolled in MDSA20200.
