Circulatory Sytem

Question 1

What is the flow of deoxygenated blood in the heart

Answer 1

1. Deoxygenated Blood enters the superior and inferior Vena Cavas
2. Deoxygenated blood flows into the right atrium, through the Tricuspid(AV) Valve, and into the right ventricle
3. Deoxygenated blood flows past the semi-lunar valve, out the pulmonary artery, to the lungs

Question 2

what is the flow of oxygenated blood in the heart

Answer 2

1. Oxygenated blood returns to heart from lungs via pulmonary veins
2. Oxygenated blood flows to left atrium, through the bicuspid valve, into the left ventricle
3. oxygenated blood flows past semi-lunar valve, into the aorta, and out of the body

Question 3

Be able to label a heart diagram

Answer 3

Could u do it

Question 4

Label the electrical system of the heart

Answer 4

Could u do it?

Question 5

What is the flow of electricity in the heart

Answer 5

1. The SA node sends an electrical signal to the atria to make them contract
2. The AV node sends an electric signal to the Bundle of His and Purkinje Fibers
3. The Bundle of His and Purkinje Fibers transfer the electrical signal to the Ventricles to make them contract

Question 6

What is the letter complex on an ECG wave (P, QRS, T)

Answer 6

P - Atrial excitation begins and atria contract, AV valves open, semilunar valves close. Trap blood in the ventricles.

QRS - Ventricular excitation and ventricles contrast, AV valves (bicuspid and tricuspid) close. Semilunar valves forced open by ventricular contraction. Blood empties from ventricles.

T - Ventricles relax, AV valves open, semilunar valves closed