Cardiovascular

Question 1

where do you get the signals for your heart to contract?

Answer 1

SA node

Question 2

where is the SA node located?

Answer 2

posterior wall of the right atrium

Question 3

where does the signal spread too

Answer 3

SA node to AV node to the bundle of his to the ventricles to contract

Question 4

from the bundle of his, where does the signal go?

Answer 4

bundle of his to the vertebral fibers (posterior and anterior aspect of the ventricles

Question 5

are the valves closed when the blood comes from the superior or inferior vena cava or from the pulmonary veins?

Answer 5

no, once the contraction finishes the valves open up to bring blood into the vessel