6. The repelarization phase of the cardiac muscle action potential is the result
ID: 3479718 • Letter: 6
Question
6. The repelarization phase of the cardiac muscle action potential is the result of a increased membrane permeability to sodium ions b increased membrane permeability to potassium ions c decreased membrane permeability to calcium ions d decreased membrane permeability to sodium ion:s e. Both 8 and C 7 The following are various components of the conducting system of the heart. 1 Purkinje cells 2. AV bundle 3. AV node 4. SA node 5. bundle branches The sequence in which an action potential would move through this system is a. 1. 4, 3, 2.5 b. 3, 2,4,5,1 c. 3,5,4,2,1 d. 4, 3, 2,5,1 e. 4,2,3,5,1 8- I1 Base your answers for questions 8-11 on the Strip below 8. This letter represents Ventricular Depolarization (QRS Complex) 9. This letter represents Depolarization of the Atria 10. This letter represents Repolarization of the Ventricles 11. This letter represents the time it takes a signal to travel from the SA node to the AV nodeExplanation / Answer
6. B. It allows the potassium open and increases the permeability
7. C 4 3 2 5 1
9. Depolarisation occur in the four chambers of the heart both atria first and then both ventricles the S.A. node of the wall of the right atrium depolarisation in the right and left atria causing contraction which is symbolised by the p wave of an electocardiogram
8. The Qrs complex is a name for the combination of three of the graphical reflections seen on a typical electrocardiogram . It is usually the central and most visually obvious parts of the tracing it corresponds the depolarisation of the right and left ventricle of the human heart
10 .after the Qrs complex we see another small peak and this is called T wave T wave represents the depolarisation of the ventricle . Depolarisation is opposite of depolarisation and refers to the change of the membrane potential that return the membrane back to a negative value
11. It represents the PR interval
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.