Which of the following vessel or vessels contains deoxygenated blood? a. Aorta a

Question

Which of the following vessel or vessels contains deoxygenated blood? a. Aorta and the pulmonary artery b. coronary sinus and the superior and inferior vena cava c. aorta and the right and left pulmonary veins d. The right and left pulmonary veins and the superior and inferior vena cava e. Pulmonary artery, coronary sinus and the superior and inferior vena cava True or False: In an ECG, the electrical activity associated with atrial repolarization is usually obscured by the QRS complex. a. False b. True Blood within the pulmonary veins returns to the: a. left atrium b. left ventricle c. The lungs d. right atrium e. right ventricle

Explanation / Answer

Answer:

e. Pulmonary artery, coronary sinus and the superior and inferior vena cava

Explanation:

Coronary sinus carry deoxynated blood from heart muscles to right atrium.

Superior and inferior vena cava carry deoxynated blood all parts of the body to right atrium.

Pulmonary artery carry deoxynated blood from right atrium to lungs.

8). A. False

A waveform representing atrial repolarization is usually not seen on the ECG.

9). a. left atrium

Explanation:

The pulmonary veins are large blood vessels that receive oxygenated blood from the lungs and drain into the left atrium of the heart.

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