cardiac physiology Q2.

intercalated discs link muscle cell together and contain desmosomes and gap junction.

hold muscle cells together tightly.

allow passage of action potential from cell to the next-allow cardiac muscle cell to function as a (syncytium).

<p>fibrous tissue that surround the 2 AV valve openings.</p> Signup and view all the answers

<p>they lack gap junctions and provide a border to (electrically) isolates atria from ventricles.</p> Signup and view all the answers

<p>when the inside of the cell is negative relative to the outside of the cell.</p> Signup and view all the answers

<p>Na+,K+,Ca++</p> Signup and view all the answers

<p>trans membrane potential which is the electrical potential difference between the inside and outside of the cell. +ve into cell -ev out of the cell</p> Signup and view all the answers

<p>chemical potential: an ion move down its conc gradient. electrical potential: an ion move away from ions of like charge.</p> Signup and view all the answers

<p>1- selectivity 2- time-dependence 3- voltage-sensitive gating</p> Signup and view all the answers