Respiratory system

Front

What is the diaphragm?

Back

A dome-shaped sheet of muscle that separates the chest from the abdomen and plays a crucial role in breathing.

Front

What is the primary function of the trachea?

Back

The trachea, also known as the windpipe, directs air into the lungs by branching into two separate tubes.

Front

Define pharynx.

Back

A chamber located behind the nose and mouth that leads to the trachea, serving as a pathway for air.

Front

What is diffusion in the context of respiration?

Back

Diffusion is the process by which carbon dioxide moves from areas of high concentration (capillaries) to areas of low concentration (alveoli).

Front

What role do alveoli play in the respiratory system?

Back

Alveoli are tiny air sacs in the lungs where gas exchange occurs, allowing oxygen to enter the blood and carbon dioxide to be expelled.

Front

What is the function of the epiglottis?

Back

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

Front

Explain the process of inhalation.

Back

Inhalation is the process of taking air into the lungs, which occurs when the diaphragm contracts and expands the chest cavity.

Front

What happens during exhalation?

Back

Exhalation is the process of releasing air from the lungs, occurring when the diaphragm relaxes and the chest cavity decreases in size.

Front

What is the role of mucus in the respiratory system?

Back

Mucus traps dust, pathogens, and other particles in the air, helping to keep the airways clean and moist.

Front

Identify the main components of the respiratory system.

Back

The main components include the nose, pharynx, larynx, trachea, bronchi, bronchioles, and alveoli.