Anatomy of the Palate and Nasal Cavity

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What is the primary goal of the respiratory system?

To pump blood throughout the body

To obtain oxygen and eliminate carbon dioxide (correct)

To digest food

To regulate body temperature

Why are the respiratory and circulatory systems closely linked?

Because they are both voluntary systems

Because they are both located in the chest

Because they both pump blood

Because they are both necessary for obtaining oxygen and eliminating carbon dioxide (correct)

What is the term for the process of moving air into and out of the lungs?

Inspiration

Respiration

Ventilation (correct)

Circulation

What happens to the thoracic cavity volume during inspiration?

It increases Signup and view all the answers

What is the result of intrapulmonary pressure dropping during inspiration?

Air is drawn into the lungs Signup and view all the answers

Which muscle is primarily used during inspiration?

Diaphragm Signup and view all the answers

What is the main function of the mucosal surface area in the nasal cavity?

to increase the surface area exposed to the air Signup and view all the answers

What is the function of the cilia and mucus in the nasal cavity?

to move foreign particles posteriorly towards the throat Signup and view all the answers

What is the primary purpose of measuring residual volume?

To prevent lung collapse Signup and view all the answers

What is the function of the paranasal sinuses?

to reduce the weight of the skull Signup and view all the answers

What happens to the tidal volume when a person becomes more active?

It increases because the body requires more oxygen Signup and view all the answers

What is the function of the nasal vestibule?

to trap dust and bacteria Signup and view all the answers

What is the relationship between an increase in tidal volume and the inspiratory and expiratory reserve volumes?

They decrease as the tidal volume increases Signup and view all the answers

What is the function of the soft palate?

to close the nasal passages during swallowing Signup and view all the answers

What is the purpose of a pulmonary function test that uses spirometry?

To evaluate the overall lung function and capacity Signup and view all the answers

What is the function of the conchae in the nasal cavity?

to increase the surface area exposed to the air Signup and view all the answers

What is a respiratory capacity?

The sum of two or more pulmonary volumes Signup and view all the answers

What is the estimated value of Residual Volume (RV) in this example?

1200 mL Signup and view all the answers

What is the volume of air that can be occupied in the lungs, which is the sum of IRV, ERV, TV, and RV?

Total Lung Capacity Signup and view all the answers

What is the volume of air that is forcefully expired after normal expiration?

Expiratory Reserve Volume Signup and view all the answers

What is the volume of air that can be inhaled and exhaled beyond the tidal volume?

Inspiratory Reserve Volume Signup and view all the answers

What prevents lung collapse?

Residual Volume Signup and view all the answers

What is the volume of air that is normally breathed in and out of the lungs?

Tidal Volume Signup and view all the answers

What is the function of the soft palate and the uvula during swallowing?

To seal off the nasopharynx, preventing food from entering the nasal cavity Signup and view all the answers

Where is the point of separation between the digestive and respiratory systems located?

In the laryngopharynx Signup and view all the answers

What type of epithelium lines the oropharynx?

Stratified squamous epithelium Signup and view all the answers

What is the purpose of the structural adaptation in the respiratory air conduit?

To protect against increased friction and chemical trauma Signup and view all the answers

What is the function of the epiglottis?

To separate the digestive and respiratory systems Signup and view all the answers

What is attached to the thyroid cartilage?

The inferior margin of the epiglottis Signup and view all the answers