What occurs at the area labeled “D” on the graph?  

Identify the tagged blood vessel :

The QRS complex on the following graph is produced by:

If the cardioacceleratory centers are activated, the pacemaker cells will ________________.

What occurs at “A” on the graph?  

The relaxation phase of the cardiac cycle is called

Match the description to the correct disease/disorder.

15. The rocket sled shown below accelerates at a rate of 49.0 m/s2. Its passenger has a mass of 75.0 kg. Calculate the direction and magnitude of the total force the seat exerts against his body.      

14. A projectile is launched at an angle of 30 deg and lands 20 s later at the same height as it was launched.  What is the range?  

12. The initial velocity of a military jet is 205 m/s eastward. The pilot ignites the afterburners, and the jet accelerates eastward at a constant rate for 1.75 s. The final velocity of the jet is 315 m/s eastward. What was the jet’s displacement during the time it was accelerating?