Lungs Definition and Lungs Function
On this occasion I will discuss about the definition lungs and lung function. The definition lungs will I describe is based on some of the experts. Definition lungs are the organs on millipedes (respiration) and associated with the circulatory system (circulation) vertebrate breathes with the air. Its function is to Exchange oxygen from the air with carbon dioxide from the blood. This process is called “external respiration” or breathing. The lungs also have a function nonrespirasi. Medical terms related to the lung often begin at pulmo-, from the Latin word pulmones for lungs.
Lungs Definition and Lungs Function
The lungs is a body that is largely made up of the bubble (the bubble of Eve, the alveoli). Bubbles the alveoli is composed of epithelial cells and endothelial. If laid on a broad surface of approximately 90m2. The number of lung bubble is more or less 700juta pieces.
Lung is divided into two:
The right lung is made up of three lobes, the lobes of the superior lobe, pulmodekstra media, and the inferior lobe. The left lung, consists of two lobes, the superior lobe and pulmo sinistra inferior lobe. Each lobe consists of smaller parts called segments. The left lung has ten segments, namely the five segments on the superior lobe, and five segments on the inferior. The right lung has ten segments, namely the five segments on the superior lobe, two segments on the medial lobe, and three segments on the inferior lobe. Each segment is still divided into hemispheres named lobulus.
Lobulus among one another is limited by the connective tissue that contains blood vessels, nerves and lymph nodes in each lobulus there is a bronkeolus. In this bronkeolus, lobulus branches called duct alveoli. Each duct alveoli ended in the alveoli diameter between 0.2 – 0.3 mm.
Layout of the lungs in the thoracic its terrain overlooking the Middle thoracic cavity/mediastinum. In the middle there is the lead part of the lungs called the hilar. On the front there is the heart of the mediastinum. Lungs wrapped by a membrane called the pleura.
The pleura are divided into two:
1. the visceral Pleura (membrane wrapping the chest), the lung membranes that directly wraps.
2. parietal Pleura, the membrane that lines the cavity i.e. chest out.
Between the two pleura is made of ronggga (cavity) called the pleural cavity. In normal circumstances, the pleural cavity it vacuum, so that the lungs can develop deflated and there is also a little liquid (exudate) that lubricates the pleural surfaces are useful to, avoiding the friction between the lung and the chest wall during breathing movements there.
The workings of the lungs
The lungs serve as suppliers of oxygen for our bodies, and it works automatically. When the body is working hard, your lungs will work faster. Conversely, when the body in a relaxed state, the lungs also works more slowly.
Humans inhale air to get oxygen, but not all the air that is inhaled it can be used by the body, because the air is mixed with various types of gas. When we breathe, Lung pulls air from the Chamber throat. When exhaled, order the ribs are attracted towards the inside, and diaphragm underneath the rib cage moves upward. When the lungs shrink, the air that is in the air sac little by little pushed to the outside through the stem of the throat.
Lung function in humans.
The lung found in the chest on the right side and left side. On the front of their runs from just above the clavicle (collarbone) at the top of the chest until about the sixth rib bottom.In the back of the chest lung finishing around the tenth rib. The pleura (protective membrane that covers the lungs) continues down to the twelfth rib. From front to back of the lungs fill up the ribs, but separated by the heart, which is located between them.
The air we breathe incoming flows through the nose, the pharynx (throat) and larynx (voice box) and trachea (windpipe). Finally the trachea is divided into two parts called bronchi. Right main bronchus (bronchus is the word for one of the bronchus) supply the right lung; left main bronchus of the lung supply left.
This bronchial then went to divide into small bronki. Finally, the bronchi become known as bronkiolus – the smallest air tubes in the lungs. Air tube system can be thought of as a tree upside down, with the stem into the trachea and main bronchi and the bronkiolus branch. The medical term for all air tubes ‘ respiratory ‘.
At the end of the smallest bronkiolus is the alveoli. The alveoli are tiny sacs are coated by a layer of very thin cells. They also have excellent blood supply. Small alveoli is where oxygen enters the blood and where carbon dioxide (CO2) left the blood.
The lung is divided into different sections with what is known as the gap. The separation of the lung tissue that divides into a lobe of the lung. The right lung has three lobes called upper, middle and lower lobe. The left lung has only two lobes, up and down.
What do the lungs do?
The main function of the lung is to help oxygen from the air we breathe enter red blood cells. Then the red blood cells carry oxygen throughout the body for use in cells that are found in our organs and tissues. The lungs also helps the body to get rid of CO2 gas when we breathe. There are a number of other work carried out by the lung include:
Changing the pH of the blood (the blood more acidic or alkaline) and increase or decrease the amount of CO2 in the body.
Filter out small blood clots forming in blood vessels.
Sift small gas bubbles that may occur in the bloodstream.
Conversion of chemicals in the blood called angiotensin I into angiotensin II. These chemicals are important in controlling blood pressure.
How to Work the lungs and Breathing?
Deep breathing is called inhalation. For air flow into the lungs there must be a difference in air pressure in the lungs and the outside pressure. Water is composed of small particles including oxygen. If these particles are held together in a jar, for instance, they push on the side of the bottle. This ‘ push ‘ is what is known as a pressure.
If the size of the bottle and the amount of air in them remains the same, the pressure in the bottle will remain the same. But the pressure inside the bottle can change. If the size of the increase of the bottle without allowing more air in, the pressure in the bottle down. This is because there are fewer particles in than the outside. If we then removed the lid, the air will flow into the bottle. This will make the pressure inside equals out.
Get some fresh air to the lungs works on the same principle. For inhalation occurs, the lungs have to get bigger. This will lower the pressure inside the lungs compared to the outside. Water rushes into the lungs to make same pressure – deep breath.
Our Lung size varies according to what we do. The body has a specific set of muscles that help to make an increase in the size of the lungs. The most important muscles of inhalation is the diaphragm. Found at the bottom of the lungs, the diaphragm is a dome-shaped muscle. When this muscle contracts (gets tight), it evenly and an increase in the size of the lungs. During exercise the diaphragm flattens more than when we are at rest. This causes the lungs to expand more, causing more air to flow in.
Lungs function in humans.
Breathing is the process of breathing out. Basically, it is the opposite of inhalation, except that it is usually a passive process. This means that the muscle contraction is generally not required. Respiration also depends on the difference in pressure between the inside and the outside of the lungs. However, in this case, the pressure inside is greater than outside. This causes air to flow from the lungs.
The lungs receive terdeoksigenasi blood (the blood that had lost oxygen) of the heart through blood vessels called arteries pulmonalis. Terdeoksigenasi blood is then sent to the alveoli. Here, the oxygen has been piped through the bronchi and bronkiolus can cross the thin membranes found in the alveoli.
Chemical substance in red blood cells, called hemoglobin, has a great attraction to oxygen. Hemoglobin binds oxygen tightly in red blood cells, allowing oxygen to be carried in the blood stream. At the same time as oxygen get into the blood stream, the CO2 out. CO2 moves from the blood into the alveoli. This allows the gas CO2 will be exhaled.
After the blood passes through the lungs take in oxygen, known as oxygenated blood. This blood back to the heart in the pulmonary blood vessels. Once in the heart, oxygenated blood is then pumped throughout the body. Oxygen carried by the red blood cells can then be used in the cells of the body.
The basic rhythm of breathing is controlled by the brain. The part of the brain called the brainstem has a special area dedicated to maintaining our breathing patterns. The nerves that originate in this area generate electrical impulses. These impulses control the contraction of the diaphragm and other respiratory muscles. This is all done without thinking. However, other parts of the brain while can override the brainstem. This is how we are able to consciously restrain our breath or change our pattern of breathing.
While brain control the basic rhythm, also receives information from sensors in the body. This sensor is the nerve cells and provide information that affects the rate and depth of breathing. The main sensor to monitor CO2 levels in the blood. When the CO2 level increases, the sensor sends electrical impulses to the brain. This impulse causes the brain to send a signal more power to the respiratory muscles. Breathing deeper and faster and more CO2 is exhaled. Blood levels of CO2 then declined and the sensors stopped sending signals to the brain.
Hopefully the article “definition lungs and lungs function in humans” this could be useful for friends and Maintaining health. Success always and keep the spirit