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Medical Examiner 08.21.26

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AUGUST 21, 2026

AIKEN-AUGUSTA’S MOST SALUBRIOUS NEWSPAPER • OUR 20th YEAR

SENSESFIVE A THE SENSES: PART VI of V

s you may have noticed, each of our five articles on the senses could only scratch the surface of each one in turn. For every amazing aspect we covered, there were fifty more that we didn’t. It simply is not possible to do justice to any of the five in a 16page publication — and that’s even if we used all 16 pages. This article isn’t going to rectify that situation (see previous sentence), but it will contain a few tasty leftovers that we couldn’t serve before.

Can’t Touch This Our series began with the sense of touch, and one thing we didn’t mention (although it’s obvious)

is that this our only sense that is everywhere. We cannot see with our left big toe, but we can feel with it. That is true of every square centimeter of the human body. In fact, speaking of toes, if a tiny half-drop of water lands on your bare big toenail (not even on the skin), touch receptors will register the event. Something else we didn’t have room for: the astounding ability of skin to heal itself and recover from injury. Imagine the unlikely event of dropping a concrete block on your beautiful hardwood floor. A deep gash in the wood results. But within a few days it doesn’t seem as deep. A month later you can barely see the damage, and a month after that you’re not even sure exactly where the gash was anymore. That is all courtesy of a complex healing process

that begins within seconds of a bruise or cut, starting with vasoconstriction and coagulation to stop bleeding. That’s followed by the removal of dead and damaged cells, bacteria and debris through a process called phagocytosis, where white blood cells engulf and destroy invaders. Then new tissue starts growing, and one of the factors that ultimately helps make the wound invisible when all is said and done is that the edges of the wound are pulled together. In most cases, even with a loss of tissue, like a chunk of skin being lost in an injury, natural scaffolding and modeling (yes, those are the official terms) eventually restore the injury site to its original condition. One more thing that we cannot leave out in the midst of this broiling summer: our pores, which number around 5 million

in the average human. They are essential elements in keeping us cool. Just as we shut windows in freezing weather and open them in hot summer weather (pre-AC), our pores slam shut in frigid weather to preserve the warmth we need and open wide to help dissipate body heat when it’s... well, when it’s August in Augusta.

Good taste That might look like a package of fresh ground beef (above), but it’s actually an extreme close-up of the tongue. If taste buds had to be described in the briefest, most descriptive term, we might call them chemical sensors. Flavors like

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salty, sour, and sweet are created through kitchen chemistry, after all. That helps us grasp the fact that “taste buds” can be found in the lungs, pancreas, and even the brain. Those in the lungs scan incoming air for irritants and bacterial toxins and activate responses like bronchodilation faster than any asthma medication. Taste receptors in the pancreas monitor glucose levels and coordinate appropriate levels on insulin secretion. Overall, they help the body maintain metabolic stability. Receptors in the brain are not there to “taste” food as much as they are to regulate appetite, glucose use, and metabolism. They also help the brain evaluate if incoming nutrients match the body’s needs. If you have ever had an insatiable desire for salty food or an unquenchable thirst, that may be the brain’s taste receptors at work. One last unusual aspect of human taste is that to a significant degree much Please see SENSES 5 page 8

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Medical Examiner 08.21.26 by Daniel Pearson - Issuu