The Respiratory system-Cells in the human body require a constant stream of oxygen to stay alive. The respiratory gives oxygen to the cells while removing CO2 a waste product can be lethal if allowed to build up. The three major organs of this system are- airway, lungs ,and muscles of respiration. The airway which includes the nose ,mouth ,larynx ,trachea ,bronchi ,and bronchioles carries air between the lungs and the body's exterior.
The nose- The nasal cavity is the primary out side opening. This is the filter air way of the respiratory system and is overall the best way to breathe due to it's filtering.
The Mouth- The mouth is also called the oral cavity and is the secondary outside opening for the respiratory tract. The primary is the nose. The mouth is the back up. But the mouth also lacks the hairs and sticky mucus that filter air passing through the nasal cavity. The advantage is that it makes it faster to transfer air to the lungs.
The Pharynx- It is the throat muscle funnel that extends from the end of the nasal cavity to the superior end of the esophagus and larynx. The pharynx is divided into three parts: the nasopharynx, the oropharynx, and the laryngopharynx. The nasopharynx is the part where the inhaled air from the nasal cavity passes into the oropharynx. Air is inhaled through the oral cavity and enters the oropharynx. The inhaled air then descends into the laryngo pharynx, where it is diverted into the opening of the larynx by the epiglottis. The epiglottis is a flap of cartilage that acts as a switch between the trachea and the esophagus.
The Larynx- The larynx is the voice box in the respiratory system.
The Trachea- The Trachea is the wind pipe.
The Bronchi and Bronchioles- This is the airway that splits right and left into the lungs.
The Lungs- The lungs are the pair of large spongy organs that are found in the thorax lateral to the heart and superior to the diaphragm. The left and right lung are slightly different sizes because the heart points on the left side of the body. The interior of the lungs is made of a spongy tissues containing may capillaries and around 30 million tiny sacs know as alveoli. The alveoli are cup-shaped structures found at the end of the terminal bronchioles. The alveoli are lined with thin squamous epithelium that allows air going into the alveoli to exchange its gases with the blood passing through the capillaries.
Related systems are:
Respiratory Disorders:
- Respiratory and circulatory work together to remove CO2 from the body and bringing oxygen to the cells. When oxygen comes to the lungs some bronchioles lead to the heart and the heart distributes oxygenated blood throughout the body.
- The highest recorded sneeze is 165 km per hour.
- The surface area of a lung is about the size of a tennis court.
- We lose half a liter of water a day through breathing.
Respiratory Disorders:
- You can get asthma from swollen bronchioles.
- You can get lung cancer from smoking.
- You can get bronchitis from inflammation of the bronchi. By: Wyatt