The trachea, commonly known as the windpipe, is a tube about 4 inches long and less than an inch in diameter in most people. The trachea begins just under the larynx (voice box) and runs down behind the breastbone (sternum). The trachea then divides into two smaller tubes called bronchi: one bronchus for each lung.
The trachea serves as passage for air, moistens and warms it while it passes into the lungs, and protects the respiratory surface from an accumulation of foreign particles. The trachea is lined with a moist mucous-membrane layer composed of cells containing small hairlike projections called cilia.
The word trachea is from the Greek phrase for windpipe — trakheia arteria, which literally meant "rough artery." The trachea is formed from rings of cartilage, which give the trachea its rough appearance.
The trachea is a dense array of a network of air tubes found in the internal system. Tracheae are known to balance the pressure inside the system. When oxygen-rich air enters into the body of the cockroach via spiracles into the tracheal tubes, it diffuses into various tissues and cells of the body.
Listen to pronunciation. (BRONG-kee-ole) A tiny branch of air tubes in the lungs.
noun, plural la·ryn·ges [luh-rin-jeez], lar·ynx·es. Anatomy. a muscular and cartilaginous structure lined with mucous membrane at the upper part of the trachea in humans, in which the vocal cords are located.
Larynx, also called voice box, a hollow, tubular structure connected to the top of the windpipe (trachea); air passes through the larynx on its way to the lungs. The larynx also produces vocal sounds and prevents the passage of food and other foreign particles into the lower respiratory tracts.
Insects, and some other invertebrates, exchange oxygen and carbon dioxide between their tissues and the air by a system of air-filled tubes called tracheae. Tracheae open to the outside through small holes called spiracles.
1 : a stiff-walled tube of the respiratory system that connects the pharynx with the lungs. 2 : a breathing tube of an insect that connects with the outside of the body and carries oxygen directly to the cells. trachea. noun.
1 : a chemical element that constitutes 21 percent of the Earth's atmosphere, that is capable of combining with all elements except some noble gases, that is active in physiological processes of almost all known organisms, and that is involved especially in combustion — see Chemical Elements Table.
Breathe sentence examples
- Her chest was too tight for her to breathe deeply.
- Rissa forced herself to breathe steadily.
- The living room started to spin and she sat, forcing herself to breathe deeply.
- She cowered into her hiding place, trying to breathe softly in spite of her state of panic.
Tiny hairs called cilia (SIL-ee-uh) protect the nasal passageways and other parts of the respiratory tract, filtering out dust and other particles that enter the nose through the breathed air.
The organs of the respiratory system include the lungs, pharynx, larynx, trachea, and bronchi.
The area of the throat containing the vocal cords and used for breathing, swallowing, and talking. Also called larynx.
Carbon dioxide is given off as a by-product of cell metabolism and is carried by the blood through the venous system (veins) to the lungs. Here it is exhaled. The concentration of CO2 in each breath is ~3.8%, and the “average” person produces approximately two pounds of carbon dioxide each day.
We get oxygen by breathing in fresh air, and we remove carbon dioxide from the body by breathing out stale air. But how does the breathing mechanism work? Air flows in via our mouth or nose. The air then follows the windpipe, which splits first into two bronchi: one for each lung.
The throat (pharynx) is a muscular tube that runs from the back of your nose down into your neck. It contains three sections: the nasopharynx, oropharynx and laryngopharynx, which is also called the hypopharynx.
The vocal folds (vocal cords) are attached within the larynx to the largest of the laryngeal cartilages known as the thyroid cartilage or "Adam's apple". The vocal folds produce sound when they come together and then vibrate as air passes through them during exhalation of air from the lungs.
The trachea, known as the airway or windpipe, is a tube that starts under the larynx (voice box) and runs behind the breastbone. It then divides into two smaller tubes, (bronchi) which lead to the lungs.
The maximum displacement of a vibrating object from its Central position is called the amplitude of vibration. The amplitude actually tell us how far the vibrating object is displaced from its central position.
When you breathe in (inhale), air containing oxygen enters your windpipe, passes through the bronchi and eventually reaches the air sacs. These air sacs, called alveoli, are responsible for gas exchange. They look a bit like grapes at the end of the bronchial branches.
During gas exchange oxygen moves from the lungs to the bloodstream. At the same time carbon dioxide passes from the blood to the lungs. This happens in the lungs between the alveoli and a network of tiny blood vessels called capillaries, which are located in the walls of the alveoli.
