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RespiratorySystem
| Question | Answer |
|---|---|
| What functions does the conducting portion, consisting of a series of air passages, have? | Functions include air transport, humidification temperature regulation (conditioning the air), filtration and removal of particles antibacterial, immunologic defence, the sense of smell (via specialised olfactory epithelium) the production of sound(voice) |
| What is the breathing portion of respiration? | It is the gas exchange section, where two gases (carbon dioxide and oxygen) are transferred in opposite directions. |
| What are the steps in inspiration? | The diaphragm contracts downwards the external intercostal muscles contract, pulling the ribs up and out,increasing the volume of the thorax,increasing the lung and alveoli volume,this decreases the pressure of air in the alveoli,and air flows in to equal |
| What are the steps in expiration? | The diaphragm relaxes and curves upwards, and the external intercostal muscles relax, allowing the ribs to fall, this decreases the volume of the thorax, this decreases the lung and alveoli volume, this increases the pressure of air in the alveoli above a |
| What are goblet cells, and where can they be found? | Goblet cells produce mucous. They are found inside the trachea, bronchus, and larger bronchioles in respiratory tract. |
| What are mucous glands, and where are they found? | Mucous glands are glands that produce mucous in the bronchus, tertiary bronchus and bronchiole. |
| What is cartilage and where is it found? | Cartilage is a flexible, connective tissue, which is found in the trachea, bronchus, bronchus and bronchioles. |
| What is alveoli and where are they found? | Alveoli are grouped together on the bronchiole of the lungs. They diffuse blood, they release carbon dioxide and absorb oxygen. |
| Oxygen concentration, step one. | High Concentration of Oxygen (O2) in the Lungs and low Concentration of Oxygen (O2) in the Blood, 85% of the O2 is carried by red blood cells |
| Oxygen concentration, step two. | High Concentration of Oxygen (O2) in the blood (due to exchange of gases across the alveolar-capillary membrane). |
| Oxygen concentration, step three. | Oxygen (O2) concentration in the blood is high compared with the concentration of oxygen in tissues throughout the body. Oxygen (O2) released from the red blood cells in the blood into the tissues of the body. |
| Oxygen concentration, step four. | Concentration of oxygen (O2) in the blood is reduced. So that by the time that blood returns to the lungs ...... the concentration of oxygen (O2) in the blood is lower than the concentration of oxygen (O2) in the lungs. It starts all over again |
| Where else does respiration occur? | Respiration occurs in the mitochondria C6H12O6 +6O2 to 6CO2 +6H2O |
Created by:
amyirvine
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