BIO 11 Lecture Notes - Lecture 8: Bronchus, Thoracic Cavity, Serous Fluid
3 Sep 2020
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Supply the body w/ oxygen and get rid of excess co2. Pulmonary respirations: breathing, moving in and out of lungs. External respirations: exchanging gases between the lungs and blood vessels. Gaseous transport: gases transported in the blood through the body. Internal respiration: exchanging gas between blood and body tissue. Moves air in and out, no exchange only a passageway. Cleanses the air that is moved through with mucosae. Adds moisture to the air which helps with exchange. Warms the air as it goes into the core. Nose: normal entry point, only external portion of the respiratory system. Resonating chamber gives voice its tonal quality. Nasal cavity: completely separate from oral cavity. External nares: nostrils, entry point for air to get into the system. Internal nares: in the back of the throat posterior nasal apertures . Paranasal sinuses moving air around in the skull to make it lighter. Goblet cells: unicellular glands that can secret mucous.
