Cholesterol Outline Cholesterol Definition Cholesterol Structure Cholesterol Function

Cholesterol

Outline �Cholesterol Definition �Cholesterol Structure �Cholesterol Function �Sources of Cholesterol �Importance of Cholesterol �HDL vs. LDL Cholesterol �References

Outline �Cholesterol Definition Cholesterol Structure Cholesterol Function Sources of Cholesterol Importance of Cholesterol HDL vs. LDL Cholesterol References

Cholesterol Definition Cholesterol is an organic molecule. a type of lipid molecule, and is biosynthesized by all animal cells, because it is an essential structural component of all animal cell membranes and is essential to maintain both membrane structural integrity and fluidity.

Outline Cholesterol Definition �Cholesterol Structure Cholesterol Function Sources of Cholesterol Importance of Cholesterol HDL vs. LDL Cholesterol References

Cholesterol Structure cholesterol consists of a tetracyclic cyclopenta[a]phenanthrene structure with an iso-octyl side-chain at carbon 17. The four rings (A, B, C, D) have trans ring junctions. there is a double bond between carbons 5 and 6. Thus, the molecule has a rigid planar fourring nucleus with a flexible tail.

Cholesterol Structure

Outline Cholesterol Definition Cholesterol Structure �Cholesterol Function Sources of Cholesterol Importance of Cholesterol HDL vs. LDL Cholesterol References

Cholesterol Function These are the important functions of cholesterol : 1. Cholesterol is responsible for proper synthesis of neurotransmitters, which is essential for propagation of nerve impulses through neurons. 2. Cholesterol packs phospholipids from both the sides of cell membrane and forms a large component of our cell membranes. Cholesterol is responsible for maintaining the stiffness, stability and maintenance of cell structure.

Cholesterol Function 3. Cholesterol plays vital role in secretion of several other vital enzymes and hormones including aldosterone, cortisol, estrogen, cortisone, progesterone, testosterone and Ubiquinone. 4. Cholesterol plays an important role in synthesis of Vitamin D 3 which is responsible for proper bone calcification. 5. Cholesterol is a precursor to other vital molecules that are important for functioning of the body.

Outline Cholesterol Definition Cholesterol Structure Cholesterol Function �Sources of Cholesterol Importance of Cholesterol HDL vs. LDL Cholesterol References

Sources of Cholesterol The body creates most of the cholesterol found in the cells and blood, although some comes from food. According to the American Heart Association, about 75 percent of cholesterol is created in the body.

Sources of Cholesterol The liver is responsible for producing the cholesterol in the body. Alone, this organ can synthesize enough cholesterol to keep the cells healthy and hormones at the appropriate levels.

Outline Cholesterol Definition Cholesterol Structure Cholesterol Function Sources of Cholesterol �Importance of Cholesterol HDL vs. LDL Cholesterol References

Importance of Cholesterol, a substance required for the normal function of cells, is present in every cell of the human body. Cholesterol is essential for: �cell membranes to function efficiently �production of vitamin D � production of bile salts �production of hormones.

Importance of Cholesterol in cell membranes The membranes of the cells need to allow needed elements such as oxygen and nutrients to enter. This semi-permeable state also allows unwanted materials to be eliminated. Cholesterol is critical for cell membranes to function efficiently.

Importance of Cholesterol in vitamin D production Vitamin D is created in the body when sunlight hits the skin. If cholesterol is not present in the body, this will not occur.

Importance of Cholesterol in Bile salts production Bile salts, which are created from cholesterol, play an important part in the absorption of fat in the digestive tract.

Importance of Cholesterol in hormones production Cholesterol must be present in the body in order for the body to create hormones such as progesterone, estrogen, testosterone and cortisol.

Outline Cholesterol Definition Cholesterol Structure Cholesterol Function Sources of Cholesterol Importance of Cholesterol �HDL vs. LDL Cholesterol References

HDL vs. LDL Cholesterol LDL and HDL are the two main types of cholesterol (blood fats, or lipids) that make up body total cholesterol. �HDL (high-density lipoproteins), or “good” cholesterol, may protect the body against narrowing blood vessels �LDL (low-density lipoproteins), or “bad” cholesterol, may make arterial narrowing worse

HDL vs. LDL Cholesterol

Outline Cholesterol Definition Cholesterol Structure Cholesterol Function Sources of Cholesterol Importance of Cholesterol HDL vs. LDL Cholesterol �References

References www. presentationszone. com www. wikipedia. org. com www. home-cure. net www. livestrong. com www. medicinenet. com