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Questions and Answers
What is the primary function of the respiratory system?
What is the primary function of the respiratory system?
Which organ is responsible for producing sound?
Which organ is responsible for producing sound?
What is the name of the muscle that separates the chest cavity from the abdominal cavity?
What is the name of the muscle that separates the chest cavity from the abdominal cavity?
During inhalation, what happens to the diaphragm?
During inhalation, what happens to the diaphragm?
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What is the term for the tiny air sacs where gas exchange occurs in the lungs?
What is the term for the tiny air sacs where gas exchange occurs in the lungs?
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What is the common passage for both the respiratory and digestive systems?
What is the common passage for both the respiratory and digestive systems?
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Study Notes
Respiratory System
Overview
- The respiratory system is responsible for bringing oxygen into the body and removing carbon dioxide
- It is essential for cellular respiration and energy production
Organs Involved
- Nose and mouth: air enters the body through the nose or mouth
- Pharynx (throat): air passes through the pharynx, which is a common passage for both the respiratory and digestive systems
- Larynx (voice box): air passes through the larynx, which contains the vocal cords
- Trachea (windpipe): air passes through the trachea, which divides into two primary bronchi
- Bronchi: air passes through the bronchi, which branch into smaller bronchioles
- Lungs: air reaches the lungs, where gas exchange occurs
- Diaphragm: a dome-shaped muscle that separates the chest cavity from the abdominal cavity and helps expand the lungs during inhalation
Process of Breathing
-
Inhalation
- Diaphragm contracts and flattens, increasing the volume of the chest cavity
- Air enters the lungs through the mouth or nose
- Air passes through the trachea and bronchi, reaching the alveoli
-
Exhalation
- Diaphragm relaxes and rises, decreasing the volume of the chest cavity
- Air is pushed out of the lungs and exhaled through the mouth or nose
Gas Exchange
- Oxygen from the air diffuses into the blood through the alveoli
- Carbon dioxide, a waste product, diffuses from the blood into the alveoli and is exhaled
Functions
- Brings oxygen into the body
- Removes carbon dioxide from the body
- Helps regulate pH levels by removing excess hydrogen ions
- Plays a role in the sense of smell
Respiratory System Overview
- Responsible for bringing oxygen into the body and removing carbon dioxide
- Essential for cellular respiration and energy production
Organs Involved
- Nose and mouth: air enters the body through the nose or mouth
- Pharynx (throat): common passage for both respiratory and digestive systems
- Larynx (voice box): contains vocal cords
- Trachea (windpipe): divides into two primary bronchi
- Bronchi: branch into smaller bronchioles
- Lungs: gas exchange occurs
- Diaphragm: dome-shaped muscle separating chest cavity from abdominal cavity, helps expand lungs during inhalation
Process of Breathing
-
Inhalation
- Diaphragm contracts and flattens, increasing chest cavity volume
- Air enters lungs through mouth or nose
- Air passes through trachea and bronchi, reaching alveoli
-
Exhalation
- Diaphragm relaxes and rises, decreasing chest cavity volume
- Air is pushed out of lungs and exhaled through mouth or nose
Gas Exchange
- Oxygen diffuses into blood through alveoli
- Carbon dioxide diffuses from blood into alveoli and is exhaled
Functions
- Brings oxygen into the body
- Removes carbon dioxide from the body
- Helps regulate pH levels by removing excess hydrogen ions
- Plays a role in the sense of smell
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Description
Learn about the organs involved in the respiratory system and their functions in bringing oxygen into the body and removing carbon dioxide.
