The right main bronchus subdivides into three lobar bronchi, while the left main bronchus divides into two.

Schematic drawing of an avian syrinx1: last free cartilaginous tracheal ring, 2: tympanum, 3: first group of syringeal rings, 4: pessulus, 5: membrana tympaniformis lateralis, 6: membrana tympaniformis medialis, 7: second group of syringeal rings, 8: main bronchus, 9: bronchial cartilage

Distally the bronchus is situated between a pulmonary artery on one side and a pulmonary vein on the other, as in type 1 ( ( fig. 24 ).

Here the pulmonary vein, as in type 2,, is noted to draw away from the bronchus, and to follow a more direct, independent course to the hilum ( figs. 23, 24 ).

It is possible for something outside of the bronchus to cause the blockage.

* Lymph nodes of the lungs: The lymph is drained from the lung tissue through subsegmental, segmental, lobar and interlobar lymph nodes to the hilar lymph nodes, which are located around the hilum ( the pedicle, which attaches the lung to the mediastinal structures, containing the pulmonary artery, the pulmonary veins, the main bronchus for each side, some vegetative nerves and the lymphatics ) of each lung.

They incorporate an endotracheal lumen which terminates in the trachea and an endobronchial lumen, the distal tip of which is positioned 1 – 2 cm into the right or left mainstem bronchus.

If it is inserted too far into the trachea ( beyond the carina ), the tip of the tracheal tube is likely to be within the right main bronchus — a situation often referred to as a " right mainstem intubation ".

* Where its anterior surface is crossed by the aortic arch and the left bronchus ( 25 – 27 cm from the incisor teeth ).

Even though the cross-sectional area of each bronchus or bronchiole is smaller, because there are so many, the total surface area is larger.

The right main bronchus is wider, shorter, and more vertical than the left main bronchus.

While the left mainstem bronchus departs from the trachea at an angle, the right mainstem bronchus is almost a vertical continuation of the trachea.

* If the endotracheal tube used for intubation is inserted too far, it usually lodges in the right mainstem bronchus.

The left lung is then easily accessible and can be removed by cutting the bronchus, artery, and vein at the hilum.

As the lumen of the right main bronchus is more vertical and of slightly wider diameter than that of the left, aspirated material is more likely to end up in this bronchus or one of its subsequent bifurcations.

Tumour is on the left, obstructing the bronchus ( lung ).

Beyond the tumour, the bronchus is inflamed and contains mucus.

Nasal mucus is produced by the nasal mucosa, and mucal tissues lining the airways ( trachea, bronchus, bronchioles ) is produced by specialized airway epithelial cells ( goblet cells ) and submucosal glands.

Outside of this context, atelectasis implies some blockage of a bronchiole or bronchus, which can be within the airway ( foreign body, mucus plug ), from the wall ( tumor, usually squamous cell carcinoma ) or compressing from the outside ( tumor, lymph node, tubercle ).

If a foreign body in the airway passes through the trachea, it will most likely enter the right main bronchus instead of the left, due to the straighter alignment of the right bronchus to the trachea.

They are found inside the trachea, bronchus, and larger bronchioles in respiratory tract, small intestines, the colon, and conjunctiva in the upper eyelid.

The right main bronchus ( or right primary bronchus, or right principal bronchus ) is a bronchus of the respiratory system.

The bronchus branches into smaller tubes, which in turn become bronchioles.

The BVM directs the gas inside it via a one-way valve when compressed by a rescuer ; the gas is then delivered through a mask and into the patient's trachea, bronchus and into the lungs.

The bronchus now passes below the artery, and is known as the hyparterial branch ; it divides into two branches for the middle and lower lobes.

The new section of trachea was then transplanted into the left main bronchus of the patient.

The lung of most reptiles has a single bronchus running down the centre, from which numerous branches reach out to individual pockets throughout the lungs.

The bronchus and pulmonary artery in this lung type maintain a close relationship throughout.

In type 1 the pulmonary vein closely follows the course of the bronchus and the pulmonary artery from the periphery to the hilum.

The right vagus then crosses anteriorly to the right subclavian artery and runs posterior to the superior vena cava and descends posterior to the right main bronchus and contributes to cardiac, pulmonary, and esophageal plexuses.

The blockage may be caused by something inside the bronchus, such as a plug of mucus, a tumour, or an inhaled foreign object such as a coin, piece of food, or a toy.

* If food, liquids, or foreign bodies are aspirated, they often will lodge in the right mainstem bronchus.

Image: Tertiary bronchus. JPG | Cross sectional cut of primary bronchiole

Mainstem bronchus < BR > 3.

Lobar bronchus < BR > 4.

Segmental bronchus < BR > 5.

Specifically, is the neuter plural of, an adjective related to the verb ἀποκρύπτω ἀποκρύπτειν ( apocriptein ), " to hide something away.

For example, in this grammar, some special words are for teaching languages, and not part of Basic English: plural, conjugate, noun, adjective, adverb, qualifier, operator, pronoun, and directive.

" Ceramic " may be used as an adjective describing a material, product or process ; or as a singular noun, or, more commonly, as a plural noun, " ceramics ".

Middle High German has a feminine singular elbe and a plural elbe, elber, but the word becomes very rare, mostly surviving in the adjective elbisch, and is replaced by the English form elf, elfen via 18th century German translations of Shakespeare's A Midsummernight's Dream.

A suffix-j following the noun or adjective suffixes-o or-a makes a word plural.

Plato, uses the plural adjective γνωστικοί – gnostikoi and the singular feminine adjective γνωστικὴ ἐπιστήμη – gnostike episteme in his Politikos where Gnostike episteme was also used to indicate one's aptitude.

Merriam-Webster notes, " Recent criticism of the use of myriad as a noun, both in the plural form myriads and in the phrase a myriad of, seems to reflect a mistaken belief that the word was originally and is still properly only an adjective .... however, the noun is in fact the older form, dating to the 16th century.

This epithet utilized the plural of the adjective, Lacedaemonius ( Greek Λακεδαιμὀνιοι, Latin Lacedaemonii ).

In grammar, the adjective inuit " Inuit " is invariable in France but, according to official recommendations in Quebec, has regular feminine and plural forms.

Typically, that order would be noun – adjective – numeral – genitive phrase – relative clause – possessive marker – plural marker – case marker, for example / diĝir gal-gal-ĝu-ne-ra / (" god great ( reduplicated )- my-plural-dative " = " for all my great gods ").

However, plurality can also be expressed with the adjective ḫi-a " various ", with the plural of the copula /- meš /, by reduplication of the noun ( kur-kur " all foreign lands ") or of the following adjective ( a gal-gal " all the great waters ") – the reduplication is believed to signify totality – or by the plurality of the verb form only.

As Reverend is traditionally an adjective it is still often considered grammatically incorrect to form the plural Reverends.

: Origin: < Middle French, French paradoxe ( 1495 as noun ; 1372 – 4 in plural paradoxesas the title of a work by Cicero ; paradoxon ( noun ) philosophical paradox in post-classical Latin also a figure of speech < ancient Greek παράδοξον, especially in plural παράδοξαStoical paradoxes, use as noun of neuter singular of παράδοξος ( adjective ) contrary to received opinion or expectation < παρα-para-prefix1 + δόξαopinion ( see doxology n .), after ancient Greek παρὰ δόξανcontrary to expectation.

For the absolute superlative they either use " muito "/" molto " and the adjective or modify the adjective by taking away the final vowel and adding issimo ( singular masculine ), issima ( singular feminine ), íssimos / issimi ( plural masculine ), or íssimas / issime ( plural feminine ).

" Linden " was originally the adjective, " made from lime-wood " ( equivalent to " wooden "); from the late 16th century, " linden " was also used as a noun, probably influenced by translations of German romance, as an adoption of Linden, the plural of German Linde.

However with Elohim the construction is grammatically singular, ( i. e. it governs a singular verb or adjective ) when referring to the Hebrew God, but grammatically plural elohim ( i. e. taking a plural verb or adjective ) when used of pagan divinities ( Psalms 96: 5 ; 97: 7 ).