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Theme (mostly) by: Theme Static

corporisfabrica:

Cell cleavage in the early embryo.
Starting with this process, the fertilised human ovum goes from a lone cell, to two, to four, to eight, to sixteen…
…to a whole human being.

corporisfabrica:

Cell cleavage in the early embryo.

Starting with this process, the fertilised human ovum goes from a lone cell, to two, to four, to eight, to sixteen…

…to a whole human being.

corporisfabrica:

Above: the tip of a hypodermic syringe.

Below: the tip of a fang from the cobra Naja kaouthia.

Both are designed to pierce the skin and admit fluids into the bloodstream, although it is often the case that the intended effects are polar opposites.

Artificial designs frequently imitate those of nature; in this case, mankind was approximately 25 million years late. 

corporisfabrica:

Lichtenberg figures on skin, colloquially known as lightning flowers.

These dramatic scars occur when lightning or other high-energy electrical arcs strike the body. The arc conducts beneath the skin, bursting subcutaneous capillaries and forming there these densely branched patterns in its wake. 

When performed intentionally under controlled conditions, the same phenomena can instead form beautiful 'captured lightning.'

corporisfabrica:

Heartbeats under magnetic resonance imaging.

We seldom consider the force with which our hearts beat through every moment of our lives. Most of us will only ever feel the dampened strength of these muscles at the arteries of the wrist or neck, perhaps through a stethoscope or in moments of excitement, exertion and fear. Take a moment to consider it now, if you will. 

Credit to the VCU Medical Center for these images.

rudygodinez:

NASA, Six Photos of an AES Flexibility Test, (1960’s)

These photos show some of the behind the scenes testing that was underway in the U.S. during the space race in the 1960s.

Black and white pictures compiled by San Diego Air And Space Museum show Bill Elkins, a chief engineer at Garrett AiResearch, testing an Advanced Extravehicular Suit (AES), a long-endurance lunar suit he developed for astronauts to wear to the moon.

Though Elkins’ creation beat out four other space suit manufacturers to secure a contact with NASA, his suit never ended up going to space because NASA cancelled all moon landings after Apollo 17 in December 1972. 

"The AES was the first suit to tackle the issues of mobility in space. It had about 95 percent of nude mobility range and had a significantly greater life cycle capability. I don’t remember, but I believe the target length for a lunar stay was about eight days."

corporisfabrica:

Retinæ as seen through fluorescein angiogram.

The innermost wall of the interior of the eye is lined with the photosensitive cells of the retina.  These images visualize the blood vessels which supply these cells and make vision possible. Originating from the blind spot around the optic disc, these vessels seem to converge upon the dark region at the center. This is the macula lutea, which contains the densely-packed cells responsible for the human eye’s greatest visual potential and your sharpest vision.

If you attempt to read this post at the corner of your eye, you will find it entirely impossible; the parts of the retina responsible for peripheral vision simply lack the resolution for such tasks. 

corporisfabrica:

Thomas Eakins - The Gross Clinic (1875)
oil on canvas
Something a little different today: this painting carries immense insight into the theater of pre-aseptic surgery. Pictured, a patient undergoes treatment for osteomyelitis of the femur with a conservative approach; the days of total amputation of the limb for the same disease were not far gone. 
In contrast to today’s surgical setting, the theater is open to a great many students, who watch from the stands, and a woman presumed to be a member of family.

The titular doctor Gross and company would not have necessarily washed their hands or instruments before performing the operation, as was common at the time. The painting represents a transitional period for surgery: the patient was anesthetized and not about to lose a leg on account of his disease, but was likely to suffer infection soon afterwards due to a lack of understanding as to the importance of clinical cleanliness. 

corporisfabrica:

Electron micrography of bacteriophages and schematic drawing.

Bacteriophages are a diverse group of viruses capable of attacking and infecting bacterial cells. The bulbous but curiously geometric head of the organism contains a DNA payload, which encodes the genome of the virus. 

After alighting on a bacterial cell membrane of a specific target species (pictured, uppermost), the bacteriophage contracts its insectoid tail fibers, and delivers the strand of DNA through the membrane of the host in a manner akin to a 100-nanometer-long, spindly-legged hypodermic syringe. The newly injected DNA inside the host may then propagate further virions, continuing the cycle of the virus; the assembly of an entirely new bacteriophage virion can take as little as 15 minutes within the host.

Some species then explosively release the new virions from the cell, whilst others employ a further-reaching technique: their DNA seamlessly integrates with that of the bacterium fairly harmlessly, until the host begins to die of its own accord. At this stage, the dormant phage DNA initiates the same process described above, with a key difference: any offspring of the original bacterium that it may have produced during its healthy lifespan are also infected with bacteriophage DNA, and will ultimately meet the same demise.

moshita:

5mm Embryo appears as Carnegie Stage 13 from ectopic pregnancy.

  • Embryo is enclosed in amniotic membrane.
  • Larger cavity is chorionic space (coelom).
  • Placental villi are visible on left of image.

UNSW Embryology