Survival of the Sickest Answers

Survival of the Sickest Notes

Introduction :

Hemochromatosis (hereditary)
most common genetic disorder
disrupts body metabolizing iron
disorder that causes iron to build up in the body.
effects: can damage organs like pancreas and liver
“iron overload”
descended from Western Europe (30% carried)
((give blood regularly and modify [make partial changes to] your diet)

genetics in the development and function of the nervous system
Natural Selection
the stronger the gene/trait, the more likely is will adapt and be reproduced, vice versa

Mutation means CHANGE (not considered a bad thing)

Genetic Code (DNA) does not determine your life, but shapes it. Depends on parents, environment and your choices.

A healthy adult usually has between 3 or 4 grams of iron in his or her body

proteins that lock up iron molecules and prevent them from being used by infectious diseases that try to come in from openings in the body found especially from tears to saliva to mucus (rich with chelators)

Acute Phase Response
immune system kicks into hear and fights back illnesses

Bubonic Plague
finds a home in the body’s lymphatic system(network of vessels through which lymph, which contains white blood cells, drains from the tissues into the blood) painfully swelling the armpits and groin until those lymphs nodes burst through the skin. -contagious

Macrophages in Hemochromatic people (white blood cells are stingy to iron) police wagons of the immune system
circle our system looking for trouble, when they find it they surround it, try to subdue or kills, and bring it back to the station in out lymph nodes.

Chapter 2 :

blood sugar
body breaks down carbohydrates in the food we eat
essential to survival, fuel for the brain
manufacture proteins
used to make energy when we need it
stores in liver, muscles and fat cells

Type 1 Diabetes
Born with it (GENETICS)
natural defense system identifies certain cells incorrectly as invaders and destroy them no insulin means blood sugar refinery is shut down
treated with daily doses of insulin, through injections or pump vigilant attention to blood sugar levels, diet and exercise

Type 2 Diabetes
Get it at a later age
pancreas still produces insulin, unlike type 1, but very low or resistant to tissues impairs the absorption and conversion of blood
insulin injections, medication, diet, exercise, weight loss, and blood sugar monitoring.

Third Diabetes (Gestational Diabetes)
occurs in pregnant women
temporary, resolves itself after pregnancy
Leads to condition to baby called macrosomia “really chubby baby” all extra sugar makes its way across placenta and feeds fetus

The Cold
when you shiver – the increased muscle activity burns the sugar stored in muscles and creates heat when body senses cold – constricts web of capillaries. as capillaries walls close up, blood id squeezed out and driven toward torso, provides warm path for organs. (lose a finger, spare a liver)

Cyropreservation – freezing living tissue to preserve it

Chapter 3
Vitamin D
grow healthy bones
ensures blood has sufficient levels of calcium and phosphorus Without Vitamin D..
adults prone to osteoporosis
children prone to rickets = improper bone growth and deformity
required to make and maintain cell membranes
helps sending messages from the brain
helps immune system protect us against cancer and diseases
building block in production of estrogen and testosterone and other hormones

Sun (ultraviolet B, UVB)
when exposed to right sunlight, our skin converts cholesterol to vitamin D cholestoral levels are higher in winter because of not having exposure to sunlight

ensure amount of cholesterol is cranked up in your blood
more cholesterol available, dark skinned people can maximize the use of sunlight penetration to the skin risk of heart attack and stroke
in Caucasians, risk of Alzheimer’s

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