1402 Lung Anatomy Study Resources
| Term | Definition |
|---|---|
| Alveoli | Small air sacs in the lungs where the exchange of oxygen and carbon dioxide takes place. |
| Bronchi | The main passageways through which air travels into each lung, branching from the trachea. |
| Bronchioles | Smaller branches stemming from the bronchi, leading to the alveoli where gas exchange occurs. |
| Cardiac Notch | A unique indentation in the left lung that accommodates the heart. |
| Diaphragm | The primary muscle of respiration, separating the thoracic cavity from the abdominal cavity and facilitating lung expansion. |
| Fissures | Lines that divide the lungs into lobes; the right lung has two (horizontal and oblique), and the left lung has one (oblique). |
| Hemoglobin | A protein within red blood cells that binds oxygen and transports it from the lungs to the body's tissues. |
| Hilum | A region on the medial aspect of each lung through which bronchi, blood vessels, lymphatics, and nerves enter and exit the lungs. |
| Intercostal Muscles | Muscles located between the ribs that assist in breathing by elevating or depressing the ribcage. |
| Lobes | Divisions within the lungs, with three in the right lung (upper, middle, lower) and two in the left lung (upper, lower). |
| Oxygenation | The process of oxygen molecules binding to hemoglobin in the red blood cells within the capillaries. |
| Pleura | A two-layered membrane enveloping each lung, consisting of the visceral pleura (inner layer) and the parietal pleura (outer layer). |
| Pleural Cavity | The space between the visceral and parietal pleurae, containing pleural fluid that lubricates the lungs during respiration. |
| Trachea | A vertical tube that bifurcates into the right and left bronchus, serving as the main airway to the lungs. |
Small air sacs in the lungs where the exchange of oxygen and carbon dioxide takes place.
Alveoli
A vertical tube that bifurcates into the right and left bronchus, serving as the main airway to the lungs.
Trachea
Smaller branches stemming from the bronchi, leading to the alveoli where gas exchange occurs.
Bronchioles
A unique indentation in the left lung that accommodates the heart.
Cardiac Notch
Divisions within the lungs, with three in the right lung (upper, middle, lower) and two in the left lung (upper, lower).
Lobes
Lines that divide the lungs into lobes; the right lung has two (horizontal and oblique), and the left lung has one (oblique).
Fissures
A protein within red blood cells that binds oxygen and transports it from the lungs to the body's tissues.
Hemoglobin
A two-layered membrane enveloping each lung, consisting of the visceral pleura (inner layer) and the parietal pleura (outer layer).
Pleura
The space between the visceral and parietal pleurae, containing pleural fluid that lubricates the lungs during respiration.
Pleural Cavity
The process of oxygen molecules binding to hemoglobin in the red blood cells within the capillaries.
Oxygenation
A region on the medial aspect of each lung through which bronchi, blood vessels, lymphatics, and nerves enter and exit the lungs.
Hilum
Muscles located between the ribs that assist in breathing by elevating or depressing the ribcage.
Intercostal Muscles
The main passageways through which air travels into each lung, branching from the trachea.
Bronchi
The primary muscle of respiration, separating the thoracic cavity from the abdominal cavity and facilitating lung expansion.
Diaphragm