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What is Heart Sound? Types, Nature, Time, Location Of Heart Sound.

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 Heart Sound  - The Sound Produce from Closure Of Valve During Cardiac Activity Known as Heart Sound. - The Sound is Produced due to backforce Produced by blood During Closure Of Valve. Two Types Of Heart Sound: 1. Audible Heart Sound : Easily Heard by Stethoscope.  2 Types :-    A. First HS :-  Produced During Ventricle Systole                    When Both Atrio-ventricular Valve Close.         • Nature Of Sound:- Lubb                     • Time:- 0.10 to 0.17 second          • Frequency: 25 to 45 Hz                  • Location:- On Chest Wall ( between 5th to 6th        intercoastal Of Right and Left Around Sternum).    B. Second HS :- Produced During Ventricle Systole          When Both Semilunar ...

What Is Blood ? Constituent Of Blood. Function Of Blood. Features Of Blood.

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  Blood Blood is a Vital Fluid Of Our Body. It is a Modified Fluid Connective Tissue Which is Made Of Formed element Cell (45%)And Plasma(55%). Properties Of Blood: 1. Constant Volume:- Blood Volume Doesn't Depend On Blood Constituent. 2. Colour:- It's Colour is Red Always due to Presence Of Co-ordinate Covalent Bond. 3. pH :- 7.4 ( in veins ) to 7.6 ( in Arteries) 4. Viscosity:- It's Viscosity is more than 5 times Of Purified Water. 5. Specific Gravity:- 1.050 to 1.060 6. It Differentiate between Blood Groups. ✓Formed Element Cells Are (45%): 1. Erythrocytes ( RBC )- 40% •It Has Highest Density due to Iron. •BiConcave Shape • Life Span:- 120 Days 2. Leukocytes ( WBC )- 0.5% • It is Responsible For Defence And Immunity Of the Body. • It is Of 2 Types:-    1. Granulocytes:- Neutrophils, eosinophils, basophils.    2. Agranulocytes:- Monocytes, Lymphocytes. 3. Thrombocytes ( Platelets )- 4.5% • size :- 2 to 4 micrometre  • Life Span :- 8 to 11 Days...