Cardiovascular Anatomy--- Conduction system of the heart

Question 1

the conduction system of the heart is comprised of the ________________ (SA) node, _______________________ (AV) node, AV bundle, and ____________________ fibers

Answer 1

sinoatrial
atrioventricular
purkinje

Question 2

the conduction system of the heart is derived from modified cardiac ______________

Answer 2

muscle

Question 3

the sinoatrial node (SA node or _______________________)

(1) consists of a small mass of __________________________ cells
(2) located in the top of the _____________ atrial wall near the opening of the superior vena cava

Answer 3

pacemaker
specialized
right

Question 4

Atrioventricular node (AV node or node of ______________________) is located in the bottom of the right atrium along the __________________________ septum

Answer 4

Tawara

interatrial

Question 5

The node of Tawara is also known as?

Answer 5

AV node

Question 6

The AV node is also known as?

Answer 6

node of Tawara

Question 7

. Atrioventricular bundle (AV bundle or bundle of ________)

Answer 7

His

Question 8

(1) AV bundle originates in ______ node
(2) extends from the AV node as two ________________
(3) the cables go down the two sides of the _____________________________ septum
(4) at the __________ of the heart, one cable turns left, while the other cable turns right
(5) after the cables turn at the apex, they begin to branch out and are then called ___________________ fibers

Answer 8

AV
cables
interventricular
apex
Purkinje

Question 9

Purkinje fibers

(1) extend out to the lateral walls of the __________________
(2) they also extend to the ____________ muscles

Answer 9

ventericles

papillary