Question 6 (4 points) Blood has a density of 1060 kg m 3 whereas the density of

Question

Question 6 (4 points)

Blood has a density of 1060 kg m3 whereas the density of the cerebrospinal fluid is 1007 kg m3. What mass of cerebrospinal fluid will have the same volume as 90 g of blood? Answer is in kg m3

Save

Question 7 (4 points)

What would you estimate that the difference in average blood pressure between the top of 2.0 m tall person’s head and the bottom of their feet is? (blood = 1060 kg m3)

Save

Question 8 (4 points)

You wish to measure the blood pressure at the top of a patient’s head but the patient is unable to lie flat. You measure the blood pressure at the bicep (i.e. level with the heart) and find that it is 143 mm Hg systolic and 80 mm Hg diastolic. What would you expect the systolic blood pressure to be at the top of the head given that this point is 45 cm above the measurement point? Remember this is a gauge pressure and give your answers in both mmHg. ( The   density   of   blood   is   about   1060   kg   m3 .)

Save

Question 9 (4 points)

The aortic valve is located at the base of the aorta and controls the flow of blood from the left ventricle of the heart into the
aorta. The valve has an area of about 4.0 cm2 when closed (there are variations in this area from person to person). The aortic valve closes just before the diastolic phase of the cardiac cycle at which point the blood pressure is at about 94 mm Hg. Using the figure just quoted calculate the force exerted on the aortic valve by the blood in the left ventricle The force will be in Newtons.

Answer:

Question 10 (4 points)Save

A swimmer finds that she just floats in water. If she weighs 70 kg what is her volume? (Density of water = 1×103 kgm3) The answer will be in cubic meters

Explanation / Answer

6.)

here

density = mass / volume

so

1007 * 0.09 = 90.63

then

90.63 / 1060 = 0.0855 kg = 85.5 gm

85.5 gm of cerebrospinal fluid

10)

W = 70 kg

volume = 70 / 1000

volume = 0.07 m^3

Related Questions

Navigate

• Browse (All)
• Browse Q
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.