Podcast
Questions and Answers
What is the primary purpose of the hairs and mucus in the nasal cavities?
What is the primary purpose of the hairs and mucus in the nasal cavities?
- To filter and moisten the air (correct)
- To warm the air entering the respiratory system
- To assist in the production of sound
- To transport air to the lungs
What section of the pharynx is responsible for connecting the nasal cavity to the esophagus?
What section of the pharynx is responsible for connecting the nasal cavity to the esophagus?
- Nasopharynx
- Oropharynx
- Pharyngotympanic
- Laryngopharynx (correct)
Which of the following structures forms the boundary between the upper and lower respiratory tracts?
Which of the following structures forms the boundary between the upper and lower respiratory tracts?
- Pharynx
- Trachea
- Nasal septum
- Larynx (correct)
What role do the blood capillaries beneath the mucous membrane of the nasal cavities serve?
What role do the blood capillaries beneath the mucous membrane of the nasal cavities serve?
Which part of the respiratory system is primarily involved in the process of gas exchange?
Which part of the respiratory system is primarily involved in the process of gas exchange?
What is the function of the cilia in the nasal cavities?
What is the function of the cilia in the nasal cavities?
Which part of the upper respiratory tract directly connects to both the esophagus and larynx?
Which part of the upper respiratory tract directly connects to both the esophagus and larynx?
What is the anatomical significance of the nasal septum?
What is the anatomical significance of the nasal septum?
Flashcards
Upper Respiratory Tract
Upper Respiratory Tract
Part of the respiratory system containing the nose and pharynx
Nasal Cavity
Nasal Cavity
Hollow space inside nose, divided by septum
Pharynx
Pharynx
Cone-shaped passage connecting nasal and oral cavities to esophagus & larynx
Nose Functions
Nose Functions
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Larynx
Larynx
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Lower Respiratory Tract
Lower Respiratory Tract
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Nasal Septum
Nasal Septum
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Respiratory System
Respiratory System
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Study Notes
Respiration
- The respiratory system is responsible for gas exchange between the body and the environment.
- The human respiratory system is divided into two parts: upper and lower respiratory tracts.
Upper Respiratory Tract
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Includes the nose, nasal cavity, and pharynx.
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Nose: External part of the system, composed of bone, cartilage, and fatty tissues. Nostrils are the external openings. Nasal cavities are the inner hollow spaces partitioned by the nasal septum (part of nasal bone). Vestibules are the areas near the nostrils containing hair.
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Nasal Cavities: Lined with ciliated mucous membranes. Nose hair, mucus, and cilia act as a defense mechanism filtering air and trapping foreign material like microorganisms, dust. Mucus also moistens the air. Cilia move trapped particles to the pharynx for removal. Capillaries under the mucous membrane help warm air to about 30°C.
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Pharynx: Cone-shaped passageway leading from oral and nasal cavities to the esophagus and larynx. Part of both the digestive and respiratory systems. Three sections: nasopharynx, oropharynx, and laryngopharynx.
Lower Respiratory Tract
- Includes the larynx, trachea, bronchi, and lungs.
- Larynx: Enlargement in the airway at the top of the trachea and below the pharynx. Composed primarily of muscles and cartilages. The epiglottis is one of these cartilages.
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