When an artery gets a constricted region due to plaque, how does the pressure in this region compare to the pressure in an unconstricted region adjacent?
a. Since this is a closed system, the pressure is the same in both regions.
b. In the constricted region the blood moves at a higher speed than in the unconstricted region, resulting in an increased pressure.
c. In the constricted region the blood moves at a higher speed than in the unconstricted region, resulting in a decreased pressure.
d. In the constricted region the blood moves at a lower speed than in the unconstricted region, resulting in an increased pressure.
C
You might also like to view...
According to a postulate of Einstein, which of the following describes the nature of the laws of physics as one observes processes taking place in various inertial frames of reference?
a. Laws are same only in inertial frames with zero velocity. b. Laws are same only in inertial frames moving at low velocities. c. Laws are same only in inertial frames moving at near speed of light. d. Laws are same in all inertial frames.
____________________ is a measure of the light energy that hits one square meter in one second
Fill in the blank(s) with correct word
What is the total mass of the Earth's atmosphere? The radius of the Earth is 6.4 × 10^6 m, and 1 atm = 1.01 × 10^5 N/m2
a. 5.3 × 10^16 kg b. 1.1 × 10^18 kg c. 5.3 × 10^18 kg d. 1.1 × 10^20 kg e. 5.3 × 10^9 kg
A heat engine receives 6000 J of heat from its combustion process and loses 3600 J through the exhaust and friction. What is its efficiency?
a. 33% c. 67% b. 40% d. 73%