Oxygen is a vital ingredients needed in the human body to produce energy in order to survive. We can get oxygen from the atmosphere which is released by the plants as by product of metabolism. When we inhale, higher concentration of oxygen in the atmosphere will diffuse going inside the lungs passing the upper and lower respiratory passageway until it reaches the alveoli. Higher concentration of oxygen in the alveoli diffuses to the blood capillary and binds to the heme region of the hemoglobin making an oxygenated blood and a hemoglobin carrying oxygen is known as oxyhemoglobin. This oxygenated blood will be distributed in the different blood in the body with the help of the heart which pump the blood to flow. Oxygen detach and diffuses to the organs and tissues to the cell while carbon dioxide as by product of metabolism will be released by the cells and binds to hemoglobin. This blood carrying carbon dioxide is termed as unoxygenated blood, it will flow to the heart going to the lungs to be oxygenated again. The higher concentration of carbon dioxide in the blood capillary diffuses to the alveoli and as we exhale, we get rid of the carbon dioxide by releasing it to the atmosphere which is a waste product in the metabolism of our body. A blood carrying carbon dioxide is termed as unoxygenated blood and a hemoglobin carrying carbon dioxide is also known as carboxyhemoglobin. The entire process is known as gas exchange.
Here are the lists of airway passageway as the oxygen goes into the lungs and the carbon dioxide goes out the lungs.
- Nose
- Nasal cavity
- Pharynx
- Larynx
- Trachea
- Bronchi
- Bronchioles
- Alveoli
Nose
The external organ of breathing system which receives the oxygen during inhalation.
Nasal cavity
oxygen is modified in the nasal cavity before it enters the lower breathing system which the air is warmed, cleaned, and moistened.
Pharynx
common passageway of food and air. Pharynx is divided into three region, nasopharynx, oropharynx, and laryngopharyx.
Larynx
Receives the oxygen coming from the pharynx as moves down through the epiglottis.
Trachea
also known as windpipe; it receives the air from the larynx and connects it to the bronchi below it.
Bronchi
also called bronchial tubes; two branching tubes that connect the trachea to the right and left lungs.
Bronchioles
Finer subdivision of bronchi, a hairlike tube that connects to the alveoli.
Alveoli
The actual site of gas exchange between oxygen from the atmosphere and carbon dioxide as waste product of metabolism in the body.
Here are the function of the respiratory system
- Takes in oxygen and get rid off carbon dioxide
- Rids the body for excess heat and water
- Regulated blood ph
- Filter air that goes into the lungs
The Blood delivers nutrients, oxygen, hormones, antibodies to the different parts of the body. Bloods also carry waste substances like urea and carbon dioxide which is needed to be eliminated in the body. It also may contain some harmful substances like toxins and may have bacteria and viruses which cause diseases. Bloods belongs to the circulatory system which is being pumped by the heart to transport importance materials to the different parts of the body.
Three Major Functions of the Blood
- Transportation
- Protection
- Regulation
Transportation
Blood transport important substances in different parts of the body like hormone, enzymes, proteins, antibodies, oxygen, carbon dioxide and etc.
Protection
Blood contain white blood cells which helps protect the body from diseases and infection. Blood also contain platelets which helps controls and prevent bleeding.
Regulation
Blood regulate pH level and temperature.
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