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Questions and Answers
Which one of these is NOT one of the four sinuses?
Which one of these is NOT one of the four sinuses?
- Maxillary
- Frontal (correct)
- Sphenoid
- Ethmoid
Which of the following is NOT a function of the nose?
Which of the following is NOT a function of the nose?
- Moistening air with mucus secretions
- Filtering particulate matter inhaled through nasal hairs
- Passageway for air into and out of the lungs
- Lightening the bones of the skull (correct)
Which anatomical division of the pharynx is located behind the mouth?
Which anatomical division of the pharynx is located behind the mouth?
- Laryngopharynx
- Oropharynx (correct)
- Nasopharynx
- Pharyngeal tonsils
Which of the following is NOT a function of the pharynx?
Which of the following is NOT a function of the pharynx?
Which cartilage bone forms the epiglottis?
Which cartilage bone forms the epiglottis?
What are the two muscle groups that form the larynx?
What are the two muscle groups that form the larynx?
What is the function of the vestibular folds in the larynx?
What is the function of the vestibular folds in the larynx?
What is the opening between the two true vocal cords called?
What is the opening between the two true vocal cords called?
What does the ciliated mucous membrane in the larynx do?
What does the ciliated mucous membrane in the larynx do?
What is the main function of the larynx?
What is the main function of the larynx?
Which part of the nose is composed of mainly bone and cartilage covered by skin with many sebaceous glands?
Which part of the nose is composed of mainly bone and cartilage covered by skin with many sebaceous glands?
What separates the nasal cavity from the cranial cavity?
What separates the nasal cavity from the cranial cavity?
What is the function of the olfactory nerve in the nasal cavity?
What is the function of the olfactory nerve in the nasal cavity?
Which part of the nasal cavity is lined with a mucosa containing hairs, sebaceous glands, and sweat glands?
Which part of the nasal cavity is lined with a mucosa containing hairs, sebaceous glands, and sweat glands?
What is the function of goblet cells in the nasal cavity?
What is the function of goblet cells in the nasal cavity?
What separates the nasal cavity into right and left cavities?
What separates the nasal cavity into right and left cavities?
What is the function of the paranasal sinuses?
What is the function of the paranasal sinuses?
Where does air enter the respiratory portion of each nasal passage?
Where does air enter the respiratory portion of each nasal passage?
What is the main function of the cilia in the nasal cavity?
What is the main function of the cilia in the nasal cavity?
What is the source of nose bleeds?
What is the source of nose bleeds?
Which bone separates the nasal cavity from the cranial cavity?
Which bone separates the nasal cavity from the cranial cavity?
What is the function of the cilia in the nasal cavity?
What is the function of the cilia in the nasal cavity?
What is the function of the olfactory nerve in the nasal cavity?
What is the function of the olfactory nerve in the nasal cavity?
Which part of the nasal cavity is lined with a mucosa containing hairs, sebaceous glands, and sweat glands?
Which part of the nasal cavity is lined with a mucosa containing hairs, sebaceous glands, and sweat glands?
What is the source of nose bleeds?
What is the source of nose bleeds?
Which cartilage bone forms the epiglottis?
Which cartilage bone forms the epiglottis?
Which one of these is NOT one of the four sinuses?
Which one of these is NOT one of the four sinuses?
Where does air enter the respiratory portion of each nasal passage?
Where does air enter the respiratory portion of each nasal passage?
What is the function of the paranasal sinuses?
What is the function of the paranasal sinuses?
Which anatomical division of the pharynx is located behind the mouth?
Which anatomical division of the pharynx is located behind the mouth?
Which of the following is NOT a function of the sinuses?
Which of the following is NOT a function of the sinuses?
What is the anatomical division of the pharynx located behind the nose?
What is the anatomical division of the pharynx located behind the nose?
Which tonsils are located in the oropharynx?
Which tonsils are located in the oropharynx?
Which cartilage bone forms the majority of the larynx?
Which cartilage bone forms the majority of the larynx?
What is the main function of the vestibular folds in the larynx?
What is the main function of the vestibular folds in the larynx?
What is the function of the ciliated mucous membrane in the larynx?
What is the function of the ciliated mucous membrane in the larynx?
Which part of the nose is composed of mainly bone and cartilage covered by skin with many sebaceous glands?
Which part of the nose is composed of mainly bone and cartilage covered by skin with many sebaceous glands?
What is the opening between the two true vocal cords in the larynx called?
What is the opening between the two true vocal cords in the larynx called?
Which muscle groups form the larynx?
Which muscle groups form the larynx?
Which one of these is NOT one of the four sinuses?
Which one of these is NOT one of the four sinuses?
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Study Notes
Anatomy of the Respiratory System
- Four paranasal sinuses: frontal, maxillary, ethmoidal, sphenoidal. One NOT included may be the nasosinal.
- Functions of the nose include filtering, moistening, and warming air, as well as olfaction; a function NOT included may involve sound production.
Pharynx Divisions
- The pharynx has three anatomical divisions: nasopharynx (behind the nose), oropharynx (behind the mouth), laryngopharynx.
- NOT a function of the pharynx might be sound resonance.
Laryngeal Anatomy
- Epiglottis consists of elastic cartilage.
- Larynx muscles grouped into intrinsic (control vocal cords) and extrinsic (support position).
Vocal System
- The vestibular folds (false vocal cords) prevent foreign objects from entering the larynx and stabilize the airway.
- The opening between the true vocal cords is called the glottis.
- Ciliated mucous membrane in the larynx traps debris and pathogens, keeping the airways clear.
Functions of the Nose and Nasal Cavity
- The external nose comprised of bone and cartilage also contains sebaceous glands.
- The cribriform plate of the ethmoid bone separates the nasal cavity from the cranial cavity.
- The olfactory nerve is responsible for the sense of smell.
- The respiratory region of the nasal cavity has a mucosa with hairs, sebaceous glands, and sweat glands for filtration and moisture retention.
- Goblet cells in the nasal cavity produce mucus to trap particles.
- The nasal septum divides the nasal cavity into left and right parts.
- Function of paranasal sinuses includes reducing skull weight and enhancing voice resonance.
- Air enters the respiratory portion at the choanae.
Nasal Cavity Functionality
- Cilia in the nasal cavity propel mucus towards the throat for swallowing or expulsion.
- Nosebleeds often arise from vascular structures in the nasal cavity, particularly the kiesselbach plexus.
- The nasal cavity is also separated from the cranial cavity by the ethmoid bone.
Oropharyngeal Anatomy
- Oropharynx contains palatine tonsils.
- The majority of the larynx is formed by thyroid cartilage.
Additional Laryngeal Functions
- Vestibular folds main function includes protecting the airway and providing support during breathing.
- Ciliated mucous membrane in the larynx serves to trap dust and pathogens, keeping the airway clean.
Recap of Paranasal Sinuses
- Notably, other sinuses might include accessory or lesser-known cavities, which are not classified as primary sinuses.
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