What are the parts of the upper and lower respiratory tract?

Analysis: The upper respiratory tract includes the nose, sinuses, pharynx, eustachian tube, epiglottis, and larynx. It is divided into upper and lower parts by cricoid cartilage, and the upper part is called the upper respiratory tract.

When people usually refer to a cold, most of them refer to an upper respiratory tract infection, and if it is a lower respiratory tract infection, it may be tracheitis or pneumonia.

The upper respiratory tract consists of the nose, pharynx, and larynx, and its main functions are to direct air to the lower respiratory tract, protect the lower respiratory tract from foreign bodies, and warm, filter, and moisten the inhaled air. The pharynx is divided into three parts: nasopharynx, oropharynx, and laryngopharynx, which are the common passages of the digestive tract and respiratory tract. The lower airway starts from the trachea to the alveoli.

What is the upper respiratory tract? Let's hear what Director Xu has to say.

The lower respiratory tract is the trachea, the main bronchus, and the various levels of bronchi within the lungs. The lower respiratory tract consists of rings of bone and cartilage that serve as scaffolds, internal mucosa, external connective tissue, and smooth muscle fibers. The lower respiratory tract is where air passes through the pipes and exchanges gases.

It also has the functions of removing foreign matter, humidifying and warming the air, and purifying the air. Common acute and chronic bronchitis, bronchitis, pneumonia, bronchial asthma and other diseases belong to the category of lower respiratory tract diseases. ”

The organ that divides the upper and lower respiratory tract is a laryngeal cartilage.

The upper respiratory tract includes the nose, pharynx, larynx, and the lower respiratory tract includes the trachea and bronchi.

The larynx is located at the tip of the trachea and is a ventricular organ composed of thyroid cartilage, cricoid cartilage, arytenoid cartilage, and epiglottis cartilage. The vocal cords are located in the laryngeal chamber**, and the cartilage in the laryngeal chamber is connected by muscles in front and back, and the relaxation or contraction of the muscles can control the tightness of the vocal cords and the opening and closing of the glottis.

The cricoid cartilage is the dividing point between the upper and lower breathing trachea. The upper part is the upper respiratory tract, the lower part is the lower respiratory tract, and the general larynx is the dividing line, I hope it will help you.

The dividing point between the upper and lower respiratory tracts is the cricoid cartilage, which is commonly known as the Adam's apple. The subcricoid cartilage is connected to the trachea, which is the lower respiratory tract (the tracheal bifurcation is at the sternal angle plane). The nostrils and throat belong to the upper respiratory tract, and the trachea, bronchi, and lungs belong to the lower respiratory tract.

The organ that divides the upper and lower respiratory tract should be the throat.

Is the organ that divides the upper and lower respiratory tract lungs?

Just ask about this, mainly.

Hello, the upper respiratory tract mainly includes the nasopharynx, the lower respiratory tract mainly includes, the large mouth, trachea, bronchi, and the alveoli of the bronchi.

The upper respiratory tract includes the nose, sinuses, pharynx, eustachian tube, epiglottis, and larynx; The lower respiratory tract includes trachea, bronchi, bronchioles, respiratory bronchioles, alveolar tubes, and alveoli. The upper respiratory tract diseases are common colds, which mainly invade the nose, nasopharynx and pharynx, pharyngitis, etc., and the lower respiratory tract diseases are mainly lung diseases, pneumonia, asthma, bronchitis and other diseases.

Respiratory diseases are common diseases in daily life, and according to the location of the respiratory tract, they are usually divided into two categories: upper respiratory tract and lower respiratory tract. It is important to note that the trachea, main bronchus, and all levels of bronchi within the lungs are often referred to in anatomy as the lower respiratory tract, and the nose, pharynx, and larynx are called the upper respiratory tract. Because respiratory diseases have a lot to do with inhalations and living environment habits.

Preventive health care for respiratory diseases should be taken to avoid external pollution sources. At the same time, it is active in other diseases that may lead to diseases of the upper and lower respiratory tract.

Upper respiratory tract infection and lower respiratory tract infection are two different general diseases, mainly in different locations, upper respiratory tract infection mostly refers to the lower edge of the cartilage from the nostril to the cricoidal slip bridge, mainly including acute inflammation of the nasopharynx. For example, acute pharyngitis, flattened corpoerythitis, and the common cold are all upper respiratory tract infections.