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Question: we model blood flow in a large artery diameter of...

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We model blood flow in a large artery (diameter of 7 mm) leaving the heart as a Newtonian fluid where the effect of viscosity can be ignored. Suppose that the diastolic blood pressure is 125 mmHg at the level of the heart and the blood velocity in the large artery at the heart has a peak value of 0.15 m/s. During an accident the artery is severed at a point 30.0 cm below the heart, what is the maximum velocity of blood flow from the artery to the surroundings? (The density of blood is 1050 kg/m3.)

 

1-The tidal volume of the lungs is the volume of air breathed in in 1 quiet breath. The vital capacity of the lung is the maximum volume of air that can be inhaled by a person.The vital capacity varies from person to person depending upon their age, and physical size.

2-Measurements of these parameters made in lung function labs measure the lung volumes at room temperature. Most lung function labs have a room temperature of 20oC. If a patient was given a result of 500 ml for their tidal volume and 6.00 L for their vital capacity, what volumes would these translate to in their lungs in which the air is at 37oC?

a.Tidal volume: 529 ml; Vital capacity: 6.35 L
b.

Tidal volume: 500 ml; Vital capacity: 6.00 L

c.

Tidal volume: 529 ml; Vital capacity: 6.88 L

d.

Tidal volume: 500 ml; Vital capacity: 6.50 L

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