Air Sac Collection

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

Phantom midge larva C017 / 8348
Phantom midge larva (Chaoborus sp.). Also known as the ghost midge or glassworm, the larval form of this midge is transparent and contains air sacs (white)

Scots pine pollen grain, SEM
Scots pine (Pinus sylvestris) pollen grain, coloured scanning electron micrograph (SEM). The pollen grain has two air-filled, wing-like bladders (pink)

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)

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

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

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

Emphysema, artwork
Emphysema. Artwork showing the lungs with a detailed view of a normal alveolus (air sac, left) and an alveolus affected by emphysema (right)

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In the vast expanse of Sublette County, Wyoming, amidst the breathtaking landscapes of the USA, a mesmerizing spectacle unfolds. As Spring dawns upon us, a male Greater Sage Grouse takes center stage on a lek. With feathers puffed and wings spread wide, he displays his vibrant plumage in an attempt to attract a mate. Meanwhile, deep within our own bodies lies another marvel - the intricate network of air sacs known as lung alveoli. These tiny structures resemble delicate artwork under the microscope's lens (artwork C016 / 7680). Just like nature's creations outside our windows they can awe-inspiring in their complexity. But let us delve even further into this microscopic world. A phantom midge larva (C017 / 8348) dances through our imagination as we explore these lung alveoli up close. Their beauty is magnified by scanning electron microscopy (SEM), revealing intricate details that captivate our senses. Amongst these images emerges one of Scots pine pollen grain captured by SEM - a testament to how interconnected all living beings truly are. The exchange between plants and animals extends even to the tiniest corners of existence. Returning to our lungs' remarkable architecture, we find ourselves immersed in computer illustrations showcasing alveoli at work – expanding and contracting with each breath we take, and is here that life-giving oxygen enters our bloodstream while carbon dioxide exits through capillaries nestled within alveolar septa (F/col TEM). A colored SEM image brings it all together – displaying lungs adorned with countless bronchi and alveoli like jewels embedded within them. This masterpiece reminds us of both the fragility and resilience inherent in every breath we draw. So whether it be on Sublette County's grand stage or within the depths of your own being, let us celebrate these extraordinary air sacs – guardians of life itself – for they connect us to the very essence of existence.