Meet the lungs | Respiratory system physiology | NCLEX-RN | Khan Academy
khanacademymedicine・2 minutes read
Oxygen is essential for human survival, following a path from the throat to the lungs for exchange in the alveoli before exhalation. The structure of the respiratory system includes the Adam's apple, trachea, lungs with lobes, and bronchial tree for oxygen exchange in the alveoli.
Insights
- The Adam's apple, also known as the voice box, plays a crucial role in voice control for all individuals.
- The bronchial tree structure of the lungs, resembling an upside-down tree, facilitates the exchange of oxygen in the alveoli with blood before exhalation, a vital process for human survival.
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Recent questions
What is the role of the Adam's apple in the human body?
The Adam's apple aids in voice control and is also known as the voice box.
How does air travel through the human respiratory system?
Air travels through the trachea into the lungs.
What distinguishes the left lung from the right lung?
The cardiac notch in the left lung is due to the heart's proximity.
What is the function of the diaphragm muscle in the human body?
The diaphragm muscle forms the floor of the thorax.
What is the structure of the bronchial tree in the human lungs?
The bronchial tree resembles an upside-down tree.
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Summary
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Journey of Oxygen in Human Respiratory System
- Oxygen is a crucial component of air for human survival.
- Air taken in through the mouth and nose follows a similar path to the back of the throat.
- The Adam's apple, present in all individuals, aids in voice control and is also known as the voice box.
- Air continues its journey through the trachea into the lungs, consisting of a left lung with two lobes and a right lung with three lobes.
- The cardiac notch in the left lung is due to the heart's proximity, distinguishing it from the right lung.
- Ribs and rib muscles surround the lungs, with the diaphragm muscle forming the floor of the thorax.
- The bronchial tree structure of the lungs resembles an upside-down tree, with air reaching the alveoli for oxygen exchange with blood before exhalation.
