Respiratory System Review

Front

What is the primary function of the respiratory system?

Back

The primary function of the respiratory system is to bring oxygen into the body and get rid of carbon dioxide so that our cells can perform cellular respiration.

Front

What is the epiglottis and what role does it play in the respiratory system?

Back

The epiglottis is a flap of cartilage that closes the larynx to prevent food from entering the trachea during swallowing.

Front

What are alveoli and what is their significance in the respiratory system?

Back

Alveoli are tiny air sacs in the lungs where gas exchange occurs; they are wrapped by capillaries for efficient oxygen and carbon dioxide exchange.

Front

What is the function of bronchioles in the respiratory system?

Back

Bronchioles distribute air to various areas of the lungs for better gas transfer.

Front

Identify the structure known as the larynx and its function.

Back

The larynx, also known as the voice box, is responsible for sound production and protecting the trachea against food aspiration.

Front

What is the role of the diaphragm in respiration?

Back

The diaphragm is a muscle that contracts and relaxes to facilitate breathing by changing the pressure in the thoracic cavity.

Front

Explain the process of gas exchange in the lungs.

Back

Gas exchange occurs in the alveoli where oxygen from the air is absorbed into the blood, and carbon dioxide from the blood is released into the air.

Front

What is the pathway of air from the nose to the alveoli?

Back

Air enters through the nose or mouth, travels down the trachea, branches into bronchi, then bronchioles, and finally reaches the alveoli.

Front

What is the significance of surfactant in the alveoli?

Back

Surfactant reduces surface tension in the alveoli, preventing their collapse and aiding in gas exchange.

Front

Describe the role of capillaries in the respiratory system.

Back

Capillaries surround the alveoli and facilitate the exchange of oxygen and carbon dioxide between the blood and the air.