Question

please correct answer
15 points
if correct answer I'll mark you brainlist​

Answer 1

1. vena cava low pressure

2. pulmonary artery high pressure

3. pulmonary vein low pressure

4 aorta high pressure

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Answer 2

1. The pressure falls further as blood travels into the veins and back to the heart. Pressure within the thoracic vena cava near the right atrium is very close to zero and fluctuates from a few mmHg negative to positive with respiration.

2. Normal pulmonary artery systolic pressure at rest is 18 to 25 mm Hg, with a mean pulmonary pressure ranging from 12 to 16 mm Hg. This low pressure is due to the large cross-sectional area of the pulmonary circulation, which results in low resistance.

3. The mean pulmonary artery pressure is about 14 mmHg. Left arterial pressure is about 5 mmHg. Blood flow depends on vascular pressure. The total pressure drop from the pulmonary artery to the left atrium is about 10 mmHg while in the systemic circulation it is about 100 mmHg.

4. The diastolic blood pressure is the minimum pressure experienced in the aorta when the heart is relaxing before ejecting blood into the aorta from the left ventricle (approximately 80 mmHg). Normal pulse pressure is, therefore, approximately 40 mmHg.  

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