Question

describe the origin and conduction of heartbeat


and also explain the ABO grouping of human blood

Answer 1

1) the human heart is myogenic heart the entire heart is made up of a cardiac muscles Heartbeat is initiated and regulated by a mass of muscle tissue called s a n so it is called pacemaker (the S A N has ability to generate the action potential without any external stimuli
that is auroexitable) the S A N generate and transmit the electrical impulse rhythmic early the S A N generator maximum number of action potential that is 70 -75
power normally Heartbeat 70-75 times in a minute average 72 beats per minute
The impulses generated from S A N R quickly ticket by AVN and then transmitted to the walls of ventricles through bundle of his and purkinje fibres as a result the
ventricle is contract simultaneously

2) ABO grouping is based on the presence or absence of two surface antigens on the RBCs namely A and B similarly the plasma of different individual contains two natural antibodies the distribution of antibodies and antigens infogroup of blood A,B,AB and O

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Answer 2

Heya...

See here for the answer...

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Origin of heartbeat

-- Heart is myogenic and made of cardiac muscles and regulated by a tissue called s an so it is called pacemaker ..

The S A N generate the electrical impulse rythematic and it known as heartbeat which is 70-75 normally but a average times of heart beat is 72 times per minute...

ABO grouping in blood

It is based on the presence or absence of the antigens in RBC , as A , B plasma in every individual it is grouped by biological process to give blood group as A, B , AB , and O..

Thank you