Lung

lungspulmonaryright lungleft lungapex of lungapexhepatic pistonHorizontal fissure of right lunghuman lunglobes of the lung
The lungs are the primary organs of the respiratory system in humans and many other animals including a few fish and some snails.wikipedia
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Respiratory system

respiratoryrespirationrespiratory organs
The lungs are the primary organs of the respiratory system in humans and many other animals including a few fish and some snails.
In land animals the respiratory surface is internalized as linings of the lungs.

Breathing

breathventilationrespiration
Mammals, reptiles and birds use their different muscles to support and foster breathing. Each lung is enclosed within a pleural sac that contains pleural fluid, which allows the inner and outer walls to slide over each other whilst breathing takes place, without much friction.
Breathing (or ventilation) is the process of moving air into and out of the lungs to facilitate gas exchange with the internal environment, mostly by bringing in oxygen and flushing out carbon dioxide.

Heart

cardiachuman heartapex of the heart
In mammals and most other vertebrates, two lungs are located near the backbone on either side of the heart. The lungs are located in the chest on either side of the heart in the rib cage.
From here it is pumped into the pulmonary circulation, through the lungs where it receives oxygen and gives off carbon dioxide.

Amphibian

Amphibiaamphibiansamphibious
In early tetrapods, air was driven into the lungs by the pharyngeal muscles via buccal pumping, a mechanism still seen in amphibians.
The young generally undergo metamorphosis from larva with gills to an adult air-breathing form with lungs.

Snail

snailsmarine snailcaracoles
The lungs are the primary organs of the respiratory system in humans and many other animals including a few fish and some snails.
Snails that respire using a lung belong to the group Pulmonata.

Trachea

windpipetrachealtracheae
The lungs are part of the lower respiratory tract that begins at the trachea and branches into the bronchi and bronchioles, and which receive air breathed in via the conducting zone.
The trachea, colloquially called the windpipe, is a cartilaginous tube that connects the pharynx and larynx to the lungs, allowing the passage of air, and so is present in almost all air-breathing animals with lungs.

Thoracic diaphragm

diaphragmdiaphragmatichemidiaphragm
In humans, the main muscle of respiration that drives breathing is the diaphragm. They are conical in shape with a narrow rounded apex at the top, and a broad concave base that rests on the convex surface of the diaphragm.
The diaphragm separates the thoracic cavity, containing the heart and lungs, from the abdominal cavity and performs an important function in respiration: as the diaphragm contracts, the volume of the thoracic cavity increases, creating a negative pressure there, which draws air into the lungs.

Gas exchange

pulmonary gas exchangegaseous exchangealveolar gas exchange
Their function in the respiratory system is to extract oxygen from the atmosphere and transfer it into the bloodstream, and to release carbon dioxide from the bloodstream into the atmosphere, in a process of gas exchange.
This is the case with the alveoli, which form the inner surface of the mammalian lung, the spongy mesophyll, which is found inside the leaves of some kinds of plant, or the gills of those molluscs that have them, which are found in the mantle cavity.

Pneumonia

bronchopneumoniabronchial pneumoniaNecrotizing pneumonia
The tissue of the lungs can be affected by a number of respiratory diseases, including pneumonia and lung cancer.
Pneumonia is an inflammatory condition of the lung affecting primarily the small air sacs known as alveoli.

Lung cancer

lungbronchogenic carcinomalungs
The tissue of the lungs can be affected by a number of respiratory diseases, including pneumonia and lung cancer.
Lung cancer, also known as lung carcinoma, is a malignant lung tumor characterized by uncontrolled cell growth in tissues of the lung.

Respiration (physiology)

respirationrespiratoryrespiratory physiology
Respiration is driven by different muscular systems in different species.
Breathing in brings air into the lungs where the process of gas exchange takes place between the air in the alveoli and the blood in the pulmonary capillaries

Bronchitis

chronic bronchitisbronchialbronchial affection
Chronic obstructive pulmonary disease includes chronic bronchitis and emphysema, and can be related to smoking or exposure to harmful substances.
Bronchitis is inflammation of the bronchi (large and medium-sized airways) in the lungs that causes coughing.

Pulmonary circulation

pulmonary vesselspulmonary circuitpulmonary
The lungs have a unique blood supply, receiving deoxygenated blood from the heart in the pulmonary circulation for the purposes of receiving oxygen and releasing carbon dioxide, and a separate supply of oxygenated blood to the tissue of the lungs, in the bronchial circulation.
The pulmonary circulation is the portion of the circulatory system which carries deoxygenated blood away from the right ventricle, to the lungs, and returns oxygenated blood to the left atrium and ventricle of the heart.

Pulmonary pleurae

pleuraparietal pleuravisceral pleura
Each lung is enclosed within a pleural sac that contains pleural fluid, which allows the inner and outer walls to slide over each other whilst breathing takes place, without much friction.
The pulmonary pleurae (sing. pleura) are the two layers of the invaginated sac surrounding each lung and attaching to the thoracic cavity.

Bronchopulmonary segment

lung segmental lobe
The lobes are further divided into bronchopulmonary segments and pulmonary lobules.
A bronchopulmonary segment is a portion of lung supplied by a specific segmental bronchus and arteries.

Organ (anatomy)

organorgansviscera
The lungs are the primary organs of the respiratory system in humans and many other animals including a few fish and some snails.

Silicon dioxide

silicasiliceousSiO 2
A number of occupational lung diseases can be caused by substances such as coal dust, asbestos fibres, and crystalline silica dust.
Inhaling finely divided crystalline silica is toxic and can lead to severe inflammation of the lung tissue, silicosis, bronchitis, lung cancer, and systemic autoimmune diseases, such as lupus and rheumatoid arthritis.

Vertebrate

Vertebratavertebratesvertebral
In mammals and most other vertebrates, two lungs are located near the backbone on either side of the heart.
These are reduced in adulthood, their function taken over by the gills proper in fishes and by lungs in most amphibians.

Lobe (anatomy)

lobeslobelobules
This sac also divides each lung into sections called lobes.
In anatomy, a lobe is a clear anatomical division or extension of an organ (as seen for example in the brain, lung, liver, or kidney) that can be determined without the use of a microscope at the gross anatomy level.

Bronchial circulation

The lungs have a unique blood supply, receiving deoxygenated blood from the heart in the pulmonary circulation for the purposes of receiving oxygen and releasing carbon dioxide, and a separate supply of oxygenated blood to the tissue of the lungs, in the bronchial circulation.
The bronchial circulation is the part of the circulatory system that supplies nutrients and oxygen to the cells that constitute the lungs, as well as carrying waste products away from them.

Muscles of respiration

respiratory musclesaccessory muscles of respirationmuscle of respiration
In humans, the main muscle of respiration that drives breathing is the diaphragm.
This expansion draws air into the lungs.

Bronchus

bronchibronchialbronchial tubes
The lungs are part of the lower respiratory tract that begins at the trachea and branches into the bronchi and bronchioles, and which receive air breathed in via the conducting zone.
A bronchus is a passage or airway in the respiratory system that conducts air into the lungs.

Rib cage

ribsribcagefirst rib
The lungs are located in the chest on either side of the heart in the rib cage.
The rib cage is the arrangement of ribs attached to the vertebral column and sternum in the thorax of most vertebrates, that encloses and protects the heart and lungs.

Thorax

chestthoracicthoraces
They are situated within the thoracic cavity of the chest.
It contains organs including the heart, lungs, and thymus gland, as well as muscles and various other internal structures.

Base of lung

basebase of the lung
They are conical in shape with a narrow rounded apex at the top, and a broad concave base that rests on the convex surface of the diaphragm.
The base of the lung is broad, concave, and rests upon the convex surface of the diaphragm, which separates the right lung from the right lobe of the liver, and the left lung from the left lobe of the liver, the stomach, and the spleen.