Estimate the total work performed by the heart. Clearly state any assumptions and express your answer in J/kg. B. The ascending aorta is approximately 2.6 cm in diameter. The aortic arch is approximately 5 cm above the heart. What is the pressure in the aorta at the beginning of the aortic arch during discharge? (You can assume the blood is experiencing hichehnningles) Clearly state any assumptions.

Phlebotomy Essentials
6th Edition
ISBN:9781451194524
Author:Ruth McCall, Cathee M. Tankersley MT(ASCP)
Publisher:Ruth McCall, Cathee M. Tankersley MT(ASCP)
Chapter1: Phlebotomy: Past And Present And The Healthcare Setting
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A. Estimate the total work performed by the heart. Clearly state any assumptions and express your answer in J/kg. B. The ascending aorta is approximately 2.6 cm in diameter. The aortic arch is approximately 5 cm above the heart. What is the pressure in the aorta at the beginning of the aortic arch during discharge? (You can assume the blood is experiencing hichehnningles) Clearly state any assumptions.
The typical rate at which blood is expelled from the heart is about 100 mL s¹ (1x104 m³ s¹). Blood enters
the right half of the heart at a pressure of about 0 Pascal and flows to the lungs at a mean pressure of
1,466 Pascal. Blood returns to the left half of the heat through the pulmonary veins at a mean pressure
of 1,067 Pascal. The blood is then discharged from the heart through the aorta at a mean pressure of
12,000 Pascal.
Heart
Right
Left
Transcribed Image Text:The typical rate at which blood is expelled from the heart is about 100 mL s¹ (1x104 m³ s¹). Blood enters the right half of the heart at a pressure of about 0 Pascal and flows to the lungs at a mean pressure of 1,466 Pascal. Blood returns to the left half of the heat through the pulmonary veins at a mean pressure of 1,067 Pascal. The blood is then discharged from the heart through the aorta at a mean pressure of 12,000 Pascal. Heart Right Left
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