THE ENDOCRINE SYSTEM: AND YOU!!!


Here are some more notes that I sent my parents last year, while they were in lockdown. This one’s about the endocrine system.
The endocrine system, generally speaking, uses hormones to give your body certain commands. It’s like another control system, like the brain and the CNS, but the endocrine system does things a little differently. A lot differently. To cluster things up even more, the endocrine system is involved in about every other system.
It should be noted, that when we talk about the various ‘systems’ of the human body, these are all really just arbitrary designations of convenience. It’s really all one system, working together, at the same time. Hopefully.
Well, this one is a little more wordy, and has fewer pictures. But it does have a more aggressive sense of humor. What can I say? The human body is hilarious! Also, these notes that I wrote to my parents should in no way be considered a reliable source of anatomy and physiology. I did get a lot of things right; there’s nothing in here that’s way-off-base wrong, as near as I can tell. But when I studied the endocrine system further, and continue to do so, I realize that it’s even more complicated than the smart-ass jumble of words that follow. So, hopefully you can learn a little something about the endocrine system, and get a few laughs, too.

A NEW MEDICAL STUDENT KINDA GETS IT RIGHT

Back in early 2020, when the world began to unravel, when I had just finished my first quarter of school, the lock-downs across the country had begun. My parents, I had both at the time, were considered vulnerable (right… remember when it only infected elderly people or people with compromised immune systems? It’ll go away in April! Like a miracle! Drink bleach!) and they were living in an assisted living facility. In fact, it’s only recently that restrictions have been relaxed, and I’ve been able to regularly visit my mother.

Anyway, I was having such a great time in school; I was particularity blown away by anatomy and physiology. The human body is an amazing machine. When our instructor first started lecturing about the roles that the cardiovascular and pulmonary systems play together, I devoured his words, scribbling furiously in my notebook. I read through the relevant chapters in our massive textbook. I was fascinated.

I wanted to tell my parents what I had learned, but that’s hard to do over the phone. So, I scribbled together these following pages and mailed my attempt to understand the human body off to them. They got a real kick out of it!

Needless to say, I was a green student, and I got plenty of things wrong in my notes. I think I got the actions of the diaphragm mixed up. I left out the other semilunar valve, the aortic valve. I did my best with the white blood cells, but I’m no biochemist. I got the test tube of blood wrong; white blood cells and platelets are actually in the middle, in a thin layer called the Buffy coat (seriously). There are also plenty of spelling and grammatical errors, and a few pages have this evening’s PB&J on them. Sorry about that.

If you manage to make it through my mangled scribbles of a new student barely understanding, and get to the part where I talk about platelets, you might notice something interesting. Platelets, the cells in your blood that form a mesh to stop bleeding, use serotonin in this process. This is the same serotonin that rattles around in your brain, affecting your mood, and are the primary target of most antidepressant medications. Huh. The human body’s kinda weird like that… Anyway, enjoy!

Thanks for reading! Wash your hands!

PARTS OF YOUR BODY HAVE REALLY STUPID NAMES

It is a well known fact that the healthcare industry does not speak English. Sure, when you’re talking to your doctor, or any practitioner, you’ll use layman’s terms, the ones we all know. Relatable, common sense terms. However, behind the scenes, healthcare has a needlessly complicated language. It’s like a strong tradition, a superstition almost. As if only the initiated can use this sacred tongue.

Typically, after any visit to a clinic or facility, you are given a sheet of paper, sometimes emailed, summarizing what your experience there was. It’s usually called an After Visit Summary, or a Visit Information Sheet. Depending on your facility, if you read the summary in-depth, you might see some of this obscure language pop up.

Much of the language of healthcare is derived from ancient Greek and Latin, when the smart people of the time began to (very slowly, often incorrectly) figure out how the human body works. The Latin work for uterus is ‘hyster,’ derived from hysteria, as the Greeks thought women could be overly emotional, as they did not understand that a woman ovulating can have her hormones thrown off. How charming of them. ‘Tomy’ means to cut, or remove. Thus: hysterectomy.

Today, much of the modern healthcare lexicon is an alphanumeric code, a relatively recent development. This eases communication between different languages, and it is also a common way for clinics to communicate with insurance companies.

Perhaps the most intriguing healthcare term of all is the eponym; that is, a procedure or discovery named after the person who pioneered it. The PAP smear was invented by Georgios Papanikolaou. The cruel disease of Alzheimer’s, an illness as old as humanity, was first pathologically described by Alois Alzheimer. Crohn’s disease was first identified by Burrill Crohn.

Now, considering anatomy, that is, the parts of the human body, there are many eponymous terms that, when first read, are downright silly. Here now, is a list of the most ridiculous sounding names for parts of your body:

Purkinje fibers: These are located near the bottom of the heart, and aid in the pumping action of the heart muscle and blood. They are named after Jan Evangelista Purkyně.

Bundle of His: (Actually pronounced bundle of HISS) These are fibers in your heart that help conduct the electrical impulse that keeps the heart beating. They were discovered by Wilhem His Jr.

Islets of Langerhans: These are parts of the pancreas that aid in the metabolism of glucose. They are named after researcher Paul Langerhans.

Cowper’s glands: These aid in the transmission of male semen from point A to point B. They are named after William Cowper.  Mama Cowper must have been proud.

Pouch of Douglas: This is the pouch between the rectum and the uterus of the female body. Anatomist James Douglas took his work very seriously.

Golgi apparatus: This cellular substance aids in protein packaging. They are named for the Italian Scientist Camillo Golgi.

Loop of Henle: This handy little structure aids in the production of urine. It is named after German anatomist Freidrich Gustav Jakob Henle. Dr. Henle liked to study how we pee.

Little’s plexus: This is part of your nasal septum. It was first discovered by American surgeon James Little. I don’t know much about him, but judging by his name, he was probably 6’4″ and 280 lbs.

Crypts of Lushka: These are the mucous membranes on the inside of the gallbladder. They are named after German anatomist Dr. Hubert Von Luschka.

Zonule of Zinn: This is a suspensory ligament in the eye. They are named after Johann Gottfried Zinn.

Spiral valves of Heister These are valves in the cystic duct, connecting the gallbladder to the bile duct. They are named after German anatomist Lorenz Heister.

Wormian Bones: These are structural bones in the skull. They are named after Ole Worm, professor of anatomy at Copenhagen. Cool name.

Artemis Schlong: After centuries of debate, a name was finally settled on the name of the male reproductive organ in 1692, by Costa Rican anesthesiologist Artemis Schlong.

All human beings, gender dependent, have within them these anatomical parts with unusual and odd sounding names. There are of course, many more. And still… more to be discovered.

Wash your hands!