respiratory system

Front

What is the main function of the respiratory system?

Back

The main function of the respiratory system is to facilitate gas exchange, allowing oxygen to enter the body and carbon dioxide to be expelled.

Front

What is the trachea?

Back

The trachea, also known as the windpipe, is a tube that connects the larynx to the bronchi, allowing air to pass to and from the lungs.

Front

What are bronchi?

Back

Bronchi are the main passageways that branch off from the trachea and lead into the lungs, where they further divide into smaller bronchioles.

Front

What are bronchioles?

Back

Bronchioles are the smaller air passages within the lungs that branch off from the bronchi and lead to the alveoli.

Front

What are alveoli?

Back

Alveoli are tiny air sacs in the lungs where gas exchange occurs; they allow oxygen to enter the blood and carbon dioxide to be removed.

Front

What is the diaphragm?

Back

The diaphragm is a dome-shaped muscle located at the base of the thoracic cavity that plays a crucial role in breathing by contracting and relaxing to change the volume of the chest cavity.

Front

What is the pharynx?

Back

The pharynx is a muscular tube that connects the nasal cavity and mouth to the larynx and esophagus, serving as a pathway for air and food.

Front

What is the role of the larynx in the respiratory system?

Back

The larynx, or voice box, is located between the pharynx and trachea and is responsible for sound production and protecting the airway during swallowing.

Front

What is gas exchange?

Back

Gas exchange is the process by which oxygen is taken into the body and carbon dioxide is expelled, occurring primarily in the alveoli of the lungs.

Front

What is the significance of the pleura?

Back

The pleura are two layers of membrane surrounding the lungs that provide lubrication and reduce friction during breathing.