Respiratory System

Front

What is the function of the bronchi in the respiratory system?

Back

The bronchi are the main passageways that direct air from the trachea into the lungs, branching into smaller bronchioles.

Front

What is surfactant and why is it important for newborns?

Back

Surfactant is a substance produced in the lungs that reduces surface tension, allowing the alveoli to expand and preventing collapse during breathing.

Front

What type of blood cells are responsible for transporting oxygen in the body?

Back

Red blood cells (erythrocytes) are responsible for transporting oxygen from the lungs to the body's tissues.

Front

Where is the diaphragm located and what is its role in respiration?

Back

The diaphragm is a dome-shaped muscle located below the lungs; it contracts to create a vacuum that pulls air into the lungs during inhalation.

Front

What structures in the respiratory system help filter and clean the air we breathe?

Back

Cilia, mucous, and nose hair all work together to trap and remove particles and pathogens from the air.

Front

Define the term 'alveoli' in the context of the respiratory system.

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 expelled.

Front

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

Back

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

Front

Explain the process of gas exchange in the lungs.

Back

Gas exchange occurs in the alveoli, where oxygen diffuses into the blood and carbon dioxide diffuses out to be exhaled.

Front

What is hypoxia and what causes it?

Back

Hypoxia is a condition where there is insufficient oxygen in the tissues, which can be caused by respiratory diseases, high altitudes, or suffocation.

Front

What is the significance of cilia in the respiratory tract?

Back

Cilia are hair-like structures that line the respiratory tract; they help move mucus and trapped particles out of the lungs.