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Chapter 35
Respiratory tract
Question | Answer |
---|---|
What are alveoli | Sacs that serve as gas exchangers |
Upper respiratory tract | Organs outside the thorax- Nose, nasopharynx, oropharynx, laryngopharynx, and larynx |
Lower respiratory tract | Organs within the thorax-trachea, bronchial tree, and lungs |
Structure of the lungs | Cone shaped organs extending from the diaphragm to above the clavicles |
Hilum | Slit on the lungs medial surface where the primary bronchi and pulmonary blood vessels enter |
Base of the lungs | Inferior portion of the lungs that sit on the diaphragm |
Costal surface of the lungs | Lies against the ribs |
Left lung is divided into: | 2 sections- Superior and inferior |
Right lung is divided into: | 3 sections - Superior, middle, and inferior |
Functions of the lungs | Air distribution and gas exchange |