RESPIRATORY SYSTEM
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What are two functions of the Respiratory systems?
Needs to get O2 in(for cellular respiration to make ATP), Needs Carbon Dioxide out (Waste product)
Lung Structure
Has a spongy texture with high surface area to absorb oxygen and has moist lining to trap unnecessary particles
What happens when inhaling?
Oxygen passes from alveoli to blood by diffusion
What happens when exhaling
Carbon Dioxide is explelled from the lungs into the atmosphere
Alveoli
Small air sacs with thin membranes that allow the diffusion of O2 & CO2 (O2 goes into capillaries, CO2 comes out of it)
What is the process of diffusion of gas in the Respiratory system?
Gases move from high to low concentration
Capillaries
A critical transfer point for the bloodstream and lungs to meet
Diaphragm
dome-shaped muscles crucial for breathing by separating the chest from the abdomen
What happens to the diaphragm when inhaling?
Diaphragm moves down(contracts)
What happens to the diaphragm when exhaling?
Diaphragm moves up (relaxing)
How is homeostasis a crucial part of the respiratory system?
Balances oxygen in and carbon dioxide out and also balances the production of ATP energy
How does homeostasis affect exercising?
One would need more ATP bringing in more oxygen and remove more carbon dioxide
Gills
Thin tissue with high surface area with lots of blood vessels to allow gas exchange (must stay wet) (CO2 out in water, O2 into blood)
Bronchi
Conduct, filter, and humidity inhaled air before reaching to or from the alveoli
Bronchioles
Delivers oxygen-rich air to the alveoli and carries carbon dioxide out during exhalation
Trachea
The main channel for air traveling between the larynx and the lungs
What organs does oxygen go through?
Nose/Mouth –> Pharynx –> Larynx –> Trachea –> Bronchi –> Bronchioles –> Alveoli –> capillaries (repeats)