Nasal Cavity and Pharynx Flashcard

Front

What prevents lung overinflation?

Back

Stretch receptors are sensory receptors located in the lungs that detect the degree of stretch and send signals to the brain to prevent overinflation.

Front

What is the term for air rushing into the lungs during muscle contraction?

Back

Inspiration is the process of taking air into the lungs, typically occurring when the diaphragm and intercostal muscles contract.

Front

What are the vocal cords also known as?

Back

Vocal folds are the structures in the larynx that vibrate to produce sound during phonation.

Front

What is the role of impulses sent to respiratory centers in the medulla?

Back

These impulses help to adjust the breathing rate based on the body's needs, such as during exercise or rest.

Front

What causes air to move in and out of the lungs?

Back

Air movement in and out of the lungs is caused by changes in volume and pressure within the thoracic cavity.

Front

What is the function of the nasal cavity?

Back

The nasal cavity warms, moistens, and filters the air we breathe, and it also plays a role in olfaction (sense of smell).

Front

What is the epiglottis and its function?

Back

The epiglottis is a flap of cartilage that covers the trachea during swallowing to prevent food and liquid from entering the airway.

Front

What is the difference between inspiration and expiration?

Back

Inspiration is the process of inhaling air into the lungs, while expiration is the process of exhaling air out of the lungs.

Front

What role do the intercostal muscles play in respiration?

Back

Intercostal muscles assist in expanding and contracting the rib cage during breathing, aiding in the process of ventilation.

Front

What is the significance of the diaphragm in breathing?

Back

The diaphragm is the primary muscle of respiration that contracts to increase thoracic volume, allowing air to flow into the lungs.