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The measure of force blood exerts against blood vessel walls is called a _______ _______.

The figure below shows the unusual path of a confused football player. After receiving a kickoff at his own goal, he runs downfield to within inches of a touchdown, then reverses direction and races back until he’s tackled at the exact location where he first caught the ball. During this run, what is each of the following? (a) the total distance he travels [ans1] yards(b) his displacement [ans2] yards(c) his average velocity in the x direction[ans3]  yd/s

Which of the following would cause a decrease in blood pressure?  

The chamber of the heart that endures the highest pressure is the

The cardioregulatory center of the brain is located in the

The graph below shows position versus time for a tennis player moving along a straight-line path. What is the tennis player’s average velocity (in m/s) over the following time intervals? (Indicate the direction with the signs of your answers.) (a)  0 to 1.00 s  [ans1] m/s   (b) 0 to 4.00 s [ans2] m/s   (c) 1.00 s to 5.00 s [ans3] m/s (d) 0 to 5.00 s [ans4] m/s

As pressure in the aorta rises due to atherosclerosis, more ventricular pressure is required to open the aortic valve.  

Which of the following is NOT a factor affecting stroke volume?

In the pulmonary circulation, the _____ carry blood from the lungs to the heart.

Stroke volume is always equal to end diastolic volume.