HEART

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❤DIAGRAM OF HEART

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CELL MEMBRANE

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●CELL MEMBRANE    The detailed structure of the membrane was studied only after the advent of the electron microscope in 1950s.Meanwhile, chemical studies on the cell membrane, especially in human red blood cells enabled,the scientist to deduce the possible structure of plasma membrane. ● These studies show that the cell membrane is mainly composed of lipids and proteins. The major lipids are phospholipids that are arranged in a bilayer. Also the lipids are arranged within the membrane with the polar head towards the outer side and the hydrophobics tails towards the inner part. This ensure that the nonpolar tail of saturated hydrocarbons is protected from the  aqueous environment.   《MOSAIC MODEL OF CELL MEMBRANE/PLASMA MEMBRANE 》
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LIVER

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Liver is the largest gland present in the human body. It is deep red or brown coloured to lobed structure present in the abdominal cavity. It secretes bile juice which is stored in the transparent gall bladder. From the gall bladder bile is transported to deudenum through the common bile duct. Bile is yellowish green coloured fluid because of the presence of to pigments and biliverdin and bilirubin.These pigments are produced by The breakdown of hemoglobin of worn out RBCs. It also contains some salts such as sodium carbonate, sodium bicarbonate, sodium glycocholate and sodium taurocholate.
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MENSTRUATION

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                            MENSTRUATION                                                                                                                                ▪︎A major change in the girl is the beginning of the menstrual cycle. ▪︎It marks the beginning of reproductive life of a woman. ▪︎A typical menstrual cycle occurs every 28 to 30 days. 🔴DAYS 1-5:- Mensuration occurs while various hormones activate the formation of an egg in the ovary. 🔴DAYS 6-13:- The egg continues to be formed where as the lining of the uterus is being prepared to receive it. 🔴DAYS 15-28:- If the egg is fertilized it implants itself in the Wall of the uterus,but if the egg is not fertilised, blood vessels in the walls of the uterus shrink become oxygen deprived,breakdown, and move out of the vagina in the form of bleeding called menstrual flow.      ◼Mansuration continues till the age of 45 to 50 years and ends in a stage called Menopause. ◼ No eggs are released after Menopause and the ability of wome
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