Alveolus Collection

Lactating breast tissue, light micrograph
Lactating breast tissue. Light micrograph of a section through healthy breast (mammary gland) tissue during lactation. Glandular tissue in the breast has proliferated to produce spaces (alveoli)

Prostate, light micrograph
Prostate. Light micrograph of a section through a prostate showing a concretion (red) of secretory materials in a prostatic alveolus (air space)

Lung tissue, TEM
Lung tissue, coloured transmission electron micrograph (TEM). A single alveolus is at center. At top right is a pulmonary capillary containing a red blood cell (red) and a platelet (yellow)

Meadow brown butterfly, Maniola jurtina, wood lady or orange tip, Anthocharis cardamines, and grizzled skipper
FLO4638853 Meadow brown butterfly, Maniola jurtina, wood lady or orange tip, Anthocharis cardamines, and grizzled skipper, Pyrgus alveolus

Meadow brown butterfly, Maniola jurtina, wood lady or orange tip, Anthocharis cardamines, and grizzled skipper, Pyrgus alveolus

Diseased alveoli in the lung. Cutaway computer artwork showing the interior of diseased alveoli (spheres) and bronchioles, (tubes) and blood vessels (red and purple) of the lungs

Lung alveoli tree
Antique illustration of a Lung alveoli tree

Illustration of respiratory system of bird showing lung, trachea, bronchus, pulmonary alveolus, and syrinx

Lung alveoli anatomy, artwork C016 / 7680
Lung alveoli anatomy. Artwork showing the structure of the lung alveoli, where gas exchange occurs between the respiratory and circulatory systems

Alveolus in human lung
Alveolus. False-colour scanning electron micrograph (SEM) of an alveolus (blue cavity), one of the microscopic air sacs of the lungs

Lung alveoli. Light micrograph of a section through normal human lung tissue showing alveoli. These are tiny air sacs where most of the diffusion of gases to and from the blood occurs

Bacterial lung infection, computer artwork. Rod-shaped bacteria (bacilli, green) on the surface of the alveoli of the lungs (purple)

Pulmonary alveolus
Antique illustration of a Pulmonary alveolus

Illustration of human lung with small pulmonary alveolus surrounded by small particles causing inflammation to lining

Illustration of development of idiopathic pulmonary fibrosis showing bronchus and alveolus covered in small inorganic particles

Illustration of bronchus and alveolus covered in inorganic particles, fibroblasts, and growth factor obstructing the internal lining

Illustration showing gas exchange in alveolus

Cross section biomedical illustration of alveolus

Cross-section of the alveoli branches

Conceptual image of alveolus

Conceptual image of alveoli

Close-up of alveolus
The alveoli are the final branchings of the respiratory tree and act as the primary gas exchange units of the lung

Conceptual image of human lungs

Illustration of respiratory system
Medicine: Human anatomy, respiratory system. Drawing

Illustration of lobe of lung
Medicine: Human anatomy, lobe of the lung

Alveoli
Medicine - Human Histology - Respiratory system - Lungs - Alveoli under microscope

Lungs anatomy, artwork
Lungs anatomy, computer artwork. At top left is the trachea (windpipe, white), which splits into two bronchi, one for each lung (blue)

SEM of lung alveoli
Lung alveoli. Coloured Scanning Electron Micro- graph (SEM) of lung tissue, showing alveoli and a pulmonary blood vessel. At centre is the lumen of a large blood vessel (yellow)

Bronchioles
Bronchiole network, composite image. The trachea (windpipe, not seen) branches into two bronchi, which enter the pair of lungs

Lactating breast tissue, SEM

Rat lung alveoli, SEM
Rat lung alveoli. Coloured scanning electron micrograph (SEM) of a section of a rat lung. Alveolar ducts (the larger passages) are surrounded by alveolar air sacs, which are clusters of alveoli

Computer illustration showing alveoli
Alveoli. Computer graphic illustration showing the alveoli (round light blue structures), the microscopic air sacs of the lungs

Lung alveoli, SEM
Lung alveoli. Coloured scanning electron micrograph (SEM) of alveoli (air spaces) in the lungs. Blood vessels containing erythrocytes (red blood cells) are also seen

F / col TEM of capillary in alveolar septum of lung
False-colour transmission electron micrograph (TEM) of human lung tissue, showing an alveolar septum, the partition between the alveoli (air sacs) where gas exchange takes place

LM of a cross section through alveoli in the lung
Lung alveoli. Light micrograph of a cross section through lung tissue showing alveoli. Making up the frame (spongy appearance) are tiny air sacs called alveoli

Coloured SEM of lung showing alveoli and bronchus
Lung alveoli & bronchus. Coloured Scanning Elec- tron Micrograph (SEM) of lung tissue, showing alveoli, a bronchus, and a pulmonary blood vessel

Artwork of sputum in lungs with chronic bronchitis
Chronic bronchitis. Illustration of sputum collecting in the airways of a human lung affected by chronic bronchitis. The lobed structures are bunches of alveoli

Artwork of asthmatic respiratory system on inhaler
Asthma. Artwork of part of the respiratory system, seen on an aerosol inhaler (blue), showing the effects of asthma. The bronchi, covered in bands of cartilage (pink)

Artwork of bronchodilator action in asthma
Asthma treatment. Artwork showing the action of a bronchodilator drug breathed into the respiratory system from an aerosol inhaler to treat asthma

Artwork of lung oedema in heart failure
Lung oedema in heart failure. Illustration showing leakage of fluid (oedema) into the lung due to heart failure. A magnified circle shows one of the lungs air sacs filled with fluid

Lung fibrosis, CT scan
Lung fibrosis. Image 2 of 3. Coloured computed tomography (CT) scan through the chest of a patient with lung (pulmonary) fibrosis

Asthma. Computer artwork of allergens (blue and green) amongst alveoli (tiny air sacs, beige) in a lung. Allergens, such as dust and pollen, can trigger an asthma attack

Artwork of the respiratory system of an asthmatic
Asthma. Cut-away illustration of the respiratory system showing the effects of asthma. The trachea (windpipe) is at top and the alveoli, air sacs (white), are at bottom

Lung blood vessel, SEM
Lung blood vessel. Coloured scanning electron micrograph (SEM) of blood vessels around alveoli (air spaces, dark brown) in the lungs. Erythrocytes (red blood cells) are seen in the blood vessel

Alveoli, artwork
Alveoli at the end of a bronchial tree, computer artwork

Alveoli
3d medical illustration showing the alveoli and blood vessels in the human lung

Human lungs, artwork
Human lungs, computer artwork

Bronchial tree, artwork
Bronchial tree, computer artwork

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An alveolus, also known as a pulmonary alveolus, is a tiny air sac found in the human lungs. These microscopic structures play a crucial role in respiration by facilitating the exchange of oxygen and carbon dioxide between the bloodstream and the air. In healthy lungs, alveoli are lined with specialized cells that allow for efficient gas exchange. However, various factors can disrupt this delicate balance. For instance, lactating breast tissue can cause temporary changes to the structure of alveoli. Unfortunately, diseases such as bacterial lung infections can wreak havoc on these vital structures. When infected, alveoli become inflamed and may fill up with fluid or pus. This compromises their ability to function properly and leads to respiratory difficulties. The importance of maintaining healthy lung tissue cannot be overstated. In cases like idiopathic pulmonary fibrosis (IPF), small particles accumulate within bronchi and alveoli over time, causing inflammation and scarring. Fibroblasts and growth factors further obstruct the internal lining of these air sacs. Not only humans but birds also possess similar respiratory systems with intricate networks of bronchus and pulmonary alveoli called syrinxes. This enables them to produce complex vocalizations unique to each species. Understanding the structure and function of an alveolus is essential for comprehending respiratory health issues that arise when they are compromised or diseased. Through research and medical advancements, we strive towards preserving these tiny yet indispensable components of our lungs for optimal breathing capacity.