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Questions and Answers
What is the main function of the respiratory system?
What is the name of the passage where inhaled air passes through before entering the lungs?
What is the purpose of the intercostal muscles and the diaphragm?
What is the name of the part of the respiratory system where gases are exchanged between the air and the blood capillaries?
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What is one of the functions of the respiratory system?
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What is the name of the system that the respiratory system is a part of?
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What happens to the body's internal temperature as a result of the processes of combustion, demolition, and construction?
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What is another function of the respiratory system?
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What are the two stages of the breathing process?
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What is the purpose of the skin in breathing for some animals?
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What is the function of the lungs in external respiration?
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What is the name of the parasitic organism that can live without oxygen?
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What is the number of respiratory movements in humans per minute?
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What is the term for animals that breathe in water and air?
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What is the organ used by the frog for breathing on land?
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What is the term for the process of breathing in living organisms?
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Study Notes
The Respiratory System
- The respiratory system is responsible for supplying the cells of the human body with oxygen and removing carbon dioxide.
- Inhaled air passes through the trachea, bronchi, and bronchioles before entering the lungs.
- The lungs consist of a large number of alveoli, which are lined with very thin membranes and surrounded by abundant blood capillaries.
Components of the Respiratory System
- Nasal cavity
- Pharynx
- Larynx
- Trachea
- Bronchus
- Lung
- Respiratory tract
Functions of the Respiratory System
- Providing the body with oxygen from the atmosphere
- Excretion of carbon dioxide
- Maintaining acid-base balance or pH
- Maintaining body temperature
Respiration Processes
- External respiration: the lungs absorb oxygen-rich air from the outside and release carbon dioxide-laden air outward
- Internal respiration (cellular respiration): occurs within the cells
Breathing in Living Organisms
- Breathing through the skin
- Breathing through the bronchi
- Breathing through the gills
- Breathing through the lungs
Exceptions to Breathing
- Discovery of a microscopic animal that does not contain “mitochondrial DNA” and does not breathe
- Scientists at Tel Aviv University discovered the first parasitic organism that can live without oxygen, known as heneguia
Breathing in Amphibians
- Amphibians breathe in water and air
- The frog breathes in two different ways: underwater using its skin and on land using its lungs
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Description
The respiratory system is responsible for supplying oxygen to cells and removing carbon dioxide. Learn about the process of respiration in the human body.
