Cardiovascular - Wet Room 4 Flashcards
1
Q
What does the cardiac plexus reroute into the heart to innervate it?
A
Vagus p.sympathetic nerves and T1-T4 sympathetic nerves
2
Q
Where is the cardiac plexus?
A
At the bifurcation of the trachea
3
Q
What do the motor fibres innervate in the heart wall?
A
Nodes - SA and AV nodes
4
Q
What are the nodes?
A
Modified cardiac muscle cells called purkinje cells that can generate electrical impulses
5
Q
What are the fibres of the AV node called?
A
Purkinje fibres
6
Q
Where should the SA node be?
A
Near the opening of the superior vena cava in the RA
7
Q
Where should the AV node be?
A
In the inferior part of the interatrial septum
8
Q
Where does the AV bundle of his lie?
A
Within each side of the ventricular septum
9
Q
Name the conduction pathway of the heart then/
A
SA - AV - Bundle of His - Purkinje fibres
