The trachea is a tube-like structure located in the upper chest and neck. When a person breathes, it moves air to and from the lungs. When a person inhales, air enters the lungs through the nose or mouth and travels down the trachea. When a person exhales, carbon dioxide leaves the body through the trachea and back into the atmosphere, while oxygen is taken into the body with each breath.
The human windpipe (trachea) is about 1/4 inch in diameter. It extends from just behind the voice box (larynx) to the bronchioles, which lead to the lungs. The windpipe is surrounded by pleura, two layers of tough serous membranes that protect it from injury and allow it to move freely.
The main functions of the windpipe are to conduct air into the lungs when we breathe in and remove expired air from the body when we breathe out. It also acts as a protective mechanism for the lungs by preventing foreign objects from entering them through the respiratory system. The windpipe is divided into four sections: the larynx, the pharynx, the trachea, and the bronchi.
The larynx is the lower part of the throat behind the tongue. It consists of three parts: the vocal cords, the false cord, and the true cord.
The trachea is a long membranous tube that extends from the larynx to the bronchial tubes and transports air to and from the lungs. The windpipe is another name for the trachea. The word "windpipe" comes from the fact that it looks like a pipe that winds its way down your neck into your chest.
The pharynx is the upper part of the throat behind the mouth. It connects with the nasal cavity and the oropharynx (the portion of the pharynx between the mouth and the esophagus). The pharynx consists of three main parts: the nasopharynx, the oropharynx, and the hypopharynx.
The larynx is the voice box located in the middle of the chest. It is a cartilaginous ring shaped structure that supports five vocal cords. The larynx divides into two portions: the epiglottis covers the top of the larynx and prevents food from entering the trachea; the arytenoid cartilages are two flat plates that support the vocal cords. The muscles of the larynx open and close the glottis, the hole through which sound leaves the body.
The trachea is the main conduit for air to reach all parts of the body.
When you breathe in via your nose or mouth, air goes down the pharynx (back of the throat), through the larynx (voice box), and into the trachea (windpipe). The trachea is separated into two air channels known as bronchial tubes. One bronchial tube connects to the left lung, while the other connects to the right lung. The bronchi divide into smaller and smaller branches called bronchioles. Each bronchiole ends in a tiny capillary that leads to a small alveolus (air sac). Alveoli fill with oxygen and release it into the blood stream through microscopic holes called pulmonary veins. The heart lies in the middle of this network of blood vessels and airways called the pulmonary system. It is connected to it by the pulmonary artery and vein which carry deoxygenated blood and oxygen-rich blood, respectively, into and out of the heart.
Air flows from the top of the lungs down to the bottom. This movement creates a vacuum that draws in more air. When you breathe in, you expand your chest muscles to allow more air into your lungs. As you breathe out, your chest and belly button will go up and your back will come down. This moves more air out of your lungs.
The pulmonary system is very important for survival because it allows us to breath air and remove carbon dioxide from our bodies. If it were not able to do this, we would die after a few minutes without oxygen.
The trachea acts as a channel for air, moistening and warming it as it goes into the lungs and protecting the respiratory surface from foreign particle collection. The trachea is coated with a moist mucous-membrane layer made up of cells with tiny hairlike projections known as cilia. These move back and forth like miniature hair brushes, helping to sweep out debris and send warning signals to the brain if bacteria or other particles make their way into the airway.
The main purpose of the windpipe is to conduct air into the lungs. It does this by dividing into two branches: the right bronchus and the left bronchus. These divide further into smaller tubes called lobes which lead to alveoli where gas exchange takes place. The walls of the windpipe are made of cartilage which can grow thicker over time in people who smoke or eat too much salt. This may cause the windpipe to become narrower preventing enough air from entering your lungs causing you to feel short of breath.
The windpipe is also responsible for regulating the body's temperature through its connection with the thyroid gland and adrenal glands. If there is no heat produced by the body's organs, then they will begin to shut down life functions such as breathing. The windpipe senses changes in temperature and sends signals to the thyroid gland and adrenal glands telling them to produce more heat or respond to other stimuli.