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BioMed 5.1 Final PowerPoint

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Audrey Vaughn

on 23 December 2012

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Transcript of BioMed 5.1 Final PowerPoint

Cites Are all fats the same? Cholesterol No, there are saturated and unsaturated fats. Why are so many foods advertised as non-fat and cholesterol-free? What other molecules in patient's blood are monitored along with LDL and HDL? Triglycerides, RBC, WBC, and hemoglobin are also monitored. What is the difference between saturated and unsaturated fats? Why are unsaturated fats considered healthier than saturated one? Describe the structure of cholesterol. Why is cholesterol important for proper cell function and human health? What is cholesterol? "a steroid alcohol C27H45OH that is present in animal cells and body fluids, regulates membrane fluidity, and functions as a precursor molecule in various metabolic pathways"(merriam-webster.com) Saturated fats: found in animal products and processed foods
- Chemical structure: full of Hydrogen atoms and doesn't contain double bonded carbon atoms Unstaturated fats: found foods like nuts, avacodos, and olives.
- Chemical structure: double bonded carbon atoms. Unsaturated fats are considered healthier because they have the ability to lower LDL (bad cholesterol) and raise HDL (good cholesterol). Functions- production of hormones
- makes cell linings and membranes
- aids digestion
- produces Vitamin D Too much cholesterol and fat can be dangerous/unhealthy for you and many people don't pay attention what they are consuming. What are LDL and HDL? HDL (high-density lipoprotein cholesterol): "good" cholesterol
LDL (low-density lipoprotein cholesterol): "bad" cholesterol How do LDL and HDL differ structurally and functionally? Structure: (Both vary in shape and size)
HDL- Higher amount of protein and lower amount of lipids
LDL- contains more lipids than protein
- larger than HDL Function:
HDL-Picks up extra cholesterol from tissues and blood vessels, then carries cholesterol from tissues and blood vessels, and then carries cholesterol back to the liver for break down and excretion
LDL- Carries cholesterol to various tissues that need it, but when it is not needed in floats through the blood stream until it is needed. (This is why it is known as "bad" cholesterol.) Why do doctors monitor the concentrations of LDL and HDL in patients' blood? How are the concentrations of LDL and HDL associated with the risk for heart disease? What can patients do to change the levels of LDL and HDL in their blood? They monitor LDL because too much of it can clog arteries and ultimately cause a heart attack or stroke. Doctors also monitor HDL, to ensure that the patients have enough in their blood stream (over 40 mg/dL can reduce the risk of heart disease). When there is not enough HDL to keep up with the LDL, cholesterol begins to build up in the blood vessels. This build up can cause heart disease. People can eat healthy (limit saturated fats to reduce LDL and eat plenty of Omega-3 fatty acids to increase HDL), exercise, lose weight , and take medication to help change their HDL and LDL to proper levels. Saturated Fats

Omega- 3 Why are there so many drugs available to lower cholesterol or LDL? How are LDL, HDL, and cholesterol related to heart disease? So many drugs are available to help prevent heart attacks and strokes, and also it is convenient for those who don't want or have difficulty changing lifestyle habits. Cholesterol, which travels in the blood in the form of HDL or LDL, can clog arteries and cause a stroke or heart attack. (LDL- is the sources of clogging, HDL- works to clear cholesterol in the blood) Brunilda Nazario (2011). Heart Disease and Lowering Cholesterol. [ONLINE] Available at: http://www.webmd.com/heart-disease/guide/heart-disease-lower-cholesterol-risk. [Last Accessed 22 December 2012].

Jennifer Moll (2012). What Is The Difference Between Unsaturated and Saturated Fats?. [ONLINE] Available at: http://cholesterol.about.com/cs/faq/f/difference.htm. [Last Accessed 20 December 2012].

Maryl Jones (). Three Functions of Cholesterol. [ONLINE] Available at: http://www.ehow.com/about_5377502_three-functions-cholesterol.html. [Last Accessed 20 December 2012].

Stephanie Chandler (2011). How Does LDL & HDL Differ Structurally & Functionally?. [ONLINE] Available at: http://www.livestrong.com/article/401250-how-does-ldl-hdl-differ-structurally-functionally/. [Last Accessed 20 December 2012].

Laura Niedziocha (2011). LDL & HDL Structural Differences. [ONLINE] Available at: http://www.livestrong.com/article/415102-ldl-hdl-structural-differences/. [Last Accessed 20 December 2012].

Melanie Greenwood (2010). Why Do Doctors Monitor HDL & LDL?. [ONLINE] Available at: http://www.livestrong.com/article/212240-why-do-doctors-monitor-hdl-ldl/. [Last Accessed 20 December 2012].

Leigh Wittman (). Why Do Doctors Monitor the Concentration of LDL and HDL?. [ONLINE] Available at: http://www.ehow.com/facts_5660134_do-monitor-concentration-ldl-hdl_.html. [Last Accessed 20 December 2012].

Laura Niedziocha (2011). What Can Patients Do to Change the Levels of LDL & HDL in Their Blood?. [ONLINE] Available at: http://www.livestrong.com/article/403220-what-can-patients-do-to-change-the-levels-of-ldl-hdl-in-their-blood/. [Last Accessed 20 December 2012].
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