Understanding the Respiratory System

What is the primary function of the respiratory system?

• To filter and purify blood before it circulates.

• To regulate body temperature through sweating.

• To produce hormones that control metabolism.

• To facilitate gas exchange (oxygen and carbon dioxide) between the body and the environment.

Name the main organs involved in the respiratory process.

• Nose, pharynx, larynx, trachea, bronchi, lungs, diaphragm

• Heart, kidneys, liver

• Skin, muscles, bones

• Stomach, intestines, pancreas

What is the role of the diaphragm in breathing?

• The diaphragm filters air to remove pollutants before it enters the lungs.

• The diaphragm is responsible for regulating body temperature during exercise.

• The diaphragm plays a crucial role in breathing by contracting to allow air in and relaxing to push air out.

• The diaphragm helps in digestion by moving food through the stomach.

What is the difference between inhalation and exhalation?

• Inhalation is the release of air, while exhalation is the intake of air.

• Inhalation and exhalation are the same process of breathing.

• Inhalation is the intake of air, while exhalation is the release of air.

• Inhalation occurs only during exercise, while exhalation happens at rest.

What are alveoli and why are they important?

• Alveoli are muscle fibers that help in lung expansion.

• Alveoli are tiny air sacs in the lungs crucial for gas exchange, allowing oxygen to enter the blood and carbon dioxide to be removed.

• Alveoli are large tubes that transport air to the stomach.

• Alveoli are blood vessels that carry nutrients to the lungs.

Describe the pathway air takes from the nose to the lungs.

• Air moves from the mouth to the stomach and then to the lungs.

• Air travels from the nose to the lungs through the nasal cavity, pharynx, larynx, trachea, bronchi, and bronchioles.

• Air travels through the skin and into the lungs.

• Air goes directly from the nose to the heart before reaching the lungs.