Aleese Rosa Bio 100 Essay6: Ch45-Hormones

Inside the the pancreas are glands that secrete substances into the bloodstream, part of these substances are known as hormones. Hormones are used to get a specific response from the body as well as regulation. With regulation you need feedback regulators that can “link the response back to the initial stimulus” pg. 982. The most common pathway used being negative feedback. Negative feedback is the most common used because it “reduces the initial stimulus which prevents too much unwanted pathway activity” pg 982 being produced which differs from a positive feedback pathway which is where the “stimulus is reinforced to increase the stimulus giving to a greater response” Like how when we eat foods that taste so good that we want to eat more. A good example of negative and positive pathways are Insulin and Glucagon.

. “Insulin and Glucagon are two opposite hormones that are a key source in maintaining blood glucose levels” Pg 982.to a normal range.”Glucagon and insulin are made or produced in the pancreas” Pg 983. it is here where they are broken apart and scattered throughout the pancreas. The pieces that are scattered are from endocrine cells which are called pancreatic islets. “Pancreatic islet has alpha cells and beta cells” pg 983 which make the hormones glucagon and insulin, and are also “secreted into interstitial fluid then passed into the circulatory system like how many other hormones that react to the body such as “bicarbonate ions and digestive enzymes”.

The Insulin produced also known as beta cells help “lower blood glucose levels by stimulating most to about all of the body cells outside the brain”pg 983 the insulin also takes glucose from the blood . Insulin also decreases the blood glucose levels by slowin...

... middle of paper ...

... normally but the targeted cells can't take in the glucose received from the blood,resulting in blood glucose levels being constantly elevated” pg 983. Type 1 diabetes M. usually happens during childhood and can destroy the insulin production in the persons body. But with today's medicine Insulin can be injected into the person to prevent such an event. Unlike Type 1 Diabetes M, Type 2 Diabetes M. occurs mostly into the ages of 40 years and older “but even overweight children and sedentary (people who spend most of their time sitting also known as a couch-potato) can also develop the disease” pg 983.In today's settings Type 2 Diabetes is the seventh most common cause of death with more than about 90% of people having it.The hormones in the body compliments each other by being opposites,while one takes in another restricts the intake so the body isn't overwhelmed.