(Answered) 1 pacemaker potentialdescribe the mechanism of the

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(1) Pacemaker Potential.

Describe the mechanism of the Pacemaker Potential in SA node. How does it make a nodal cell reach the threshold without any external stimulus?

(2) Hemoglobin Saturation

Please explain why the Pulse Oximeter almost never reads 100%?

(3) Blood Group Incompatibility

Question: Can a B blood group Mother have an 'A' blood group baby? Please explain your answer as to why the 'A' type antibodies in mom will not agglutinate the 'A' antigen on the baby's RBC's.

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