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lung cancer
Curated by Taylor Wiebe
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inside the excretory system

this is a discription of the excretory system...

Taylor Wiebe's insight:

The excretory system is a combination of the kidneys (produces), ureters (transports), urinary bladder (stores), and urethra (excretes). The kidneys consist of millions of (really) tiny “filters” called nephrons. A nephron consists of a renal cortex and a renal medulla, which in turn consists of the glomerulus, Bowman’s capsule, proximal tubule, the descending and ascending loop of henle, distal tubule, and collecting duct. The renal arteries are intertwined with the nephrons to help hold everything together and so that nutrients can be reabsorbed.  

Blood (unless something is horribly broken) usually flows from the renal artery and through the glomerulus where everything except red blood cells, starch, and proteins are squeezed through a membrane into the Bowman’s capsule.   It is now referred to as “filtrate”. The filtrate flows into the proximal tubule where salt, water, organic solutes (primarily glucose and amino acids), potassium, phosphate, some water and negatively charged ions like chloride and are reabsorbed into the blood. Hydrogen ions are also secreted.

The semi filtered filtrate then flows into the descending loop of henle which is highly permeable to water, then to the ascending loop which is not permeable to water but to ions.  The distal tubule (also the primary site for the kidneys' hormone based regulation of calcium) helps regulate potassium, sodium, calcium, and PH. hydrogen ions are secreted. Finally, is the collecting duct. It absorbs most water using osmosis and the filtrate that remains in the collecting duct is a suspension of water and various solutes and particles. It is now called urine and is ready to be excreted through the anus. And we all know how that’s done…but if you want details, the urine puts pressure on the Urethral sphincter, which then sends a signal to your brain telling you that you have to go to the bathroom.

now you have somthing to think about as you sit on the toliet, and my job is done!

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Lung Cancer- Signs and Symptoms

Signs and Symptoms of lung cancer

Taylor Wiebe's insight:

The most common symptoms of lung cancer are coughing (coughing up blood), weight loss and shortness of breath. others are chest pain, bone pain, nail clubbing,  fever, fatiuge, wheezing and having difficulty swallowing. the cancer may also grow into the airways, restricting breathing.

many of the symptoms are not specific, and the cancer has usually spread past the original site by the time the symptoms occur.

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Lung Cancer- Prevention

prevention of lung cancer

Taylor Wiebe's insight:

the cheapest and easiest way to prevent lung cancer is to simply elimintae tabacoo, and to obviously avoid second hand smoke.

Ask around and and find out what you are being exposed to in your workplace. Gasoline, diesel exhaust, arsenic, beryllium. vinyl chloride, nickel chromates, coal products, mustard gas, and chloromethyl ethers are all carcinogens and can be found in some work environments.

Contorary to popular belief, The long-term use of supplemental vitamin A,vitamin C, vitamin D, or vitamin E does not reduce the risk of lung cancer, and rigorous studies have not found proof that high veggie diets reduce the risk of lung cancer.  

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Lung Cancer- Overview

a breif overview of lung cancer.

Taylor Wiebe's insight:

The disease "Lung cancer" maens you have uncontrolled growth in your lung tissues that, if left alone, can spread to other parts of your body using a prosses called metastasis. 80-90% of lung cancer is caused by smoking, with only 10-15% caused by other facters like genetics, air pollution, radon gas and second-hand smoke. radon gass is an indirect decay product of uranium and thoruim.

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