Function of Respiratory System
The brain sends a message for the diaphram to contract, it forces air into your mouth or nose this air then enters the alveoli. The Oxygen goes around your body by first entering your nose or mouth, the goes down to the pharynx, followed by the larynx which is where your voice box is. Next it will travel down to you Trachea which is surrounded by cartilage tissue, it then enters the lungs through your bronchi and then through your bronchioles. You then reach your alveoli these are tiny air sacks where gas is exchanged and then oxygen is exchanged for carbon dioxide which is then surrounded by tiny capillaries, where the oxygen and waist can enter and leave the body.
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What are the roles in the respiratory system...
Nasal cavity- This allows air to pass through so it can be received by the lungs to enable us to breath.
Epiglottis- This guards the entrance of the glottis (opening between vocal cords)
Pharynx- Is part of the digestive and respiratory system, Its function is to filter, warm and moisten air.
Larynx- Known as the voice box, it is involved in breathing and sound production.
Trachea- Known as the voice box, part of the respiratory system.
Bronchus- Passage of air-way, that conducts the air to the lungs.
Bronchioles- The first air passage, that enters through the nose and the mouth.
Lobes- There are 5 lobes in the lung, 3 on the right and 2 on the left, they make up different sections of the lung.
Pleural membrane- The bodys cavity that surrounds the lungs, it is a serious membrane.
Thoracic cavity- The cavity in the vertebrate body enclosed by the ribs, containing the lungs and heart.
Visceral pleura- Pleural that covers the lungs.
Pleural Fluid- The fluid that is found between the layers of the pleural.
Alveoli- Where oxygen and carbon dioxide are exchanged between tiny capillaries.
Inspiration and Expiration
Inspiration is breathing in, when you breath in air your rib cage expands filling up your lungs with oxygen and your diaphragm contracts moving downwards. When you exercise your diaphragm and intercostal muscle contract which makes your ribs move upwards and outwards. Expiration is when you breath out, your rib cage muscle start to relax and your rib cage contracts, the diaphragm becomes relaxed and moves back upwards. When you exercise the intercostal muscle contract to decrease the size of the thoracic cavity, this results in a more forcible breath out.
Inspiration is breathing in, when you breath in air your rib cage expands filling up your lungs with oxygen and your diaphragm contracts moving downwards. When you exercise your diaphragm and intercostal muscle contract which makes your ribs move upwards and outwards. Expiration is when you breath out, your rib cage muscle start to relax and your rib cage contracts, the diaphragm becomes relaxed and moves back upwards. When you exercise the intercostal muscle contract to decrease the size of the thoracic cavity, this results in a more forcible breath out.
Gaseous Exchange
Gaseous exchange takes place in the alveoli. The alveoli are bunches of tiny air sacks (alveolus) when you breath in they will fill up with air. The alveoli are surrounded by tiny capillaries, the gases can pass through the thin walls of each alveolus into the blood stream and vise verse.
Gaseous exchange takes place in the alveoli. The alveoli are bunches of tiny air sacks (alveolus) when you breath in they will fill up with air. The alveoli are surrounded by tiny capillaries, the gases can pass through the thin walls of each alveolus into the blood stream and vise verse.