For questions 18 and 19, match the numbers 4 & 5 with the accurate term below that defines what activity is occurring in the cardiac cycle (in the diagram on page 5) at that time

36) In order for the Big Box method of heart rate calculation to be accurate, ________ needs to be consistent from one cardiac cycle to the next.

31) Six weeks of high-altitude exercise training may drive long-term changes in control of blood flow such as ______________ due to ____________.

32) Rapid conduction of electrical signals through the Purkinje fibers explains what key driver of efficient cardiac pumping?

18) (No. 4 in figure)_____________

15) The strength of the cardiac muscle contraction depends on ____________________ because compared to skeletal muscle cells, cardiac muscle cells __________________.  

7) In Poiseuille’s Law, which one of the below factors plays the greatest role in the rate of blood flow through a vessel?

4) Severe hypertension may damage endothelial cells in blood vessels. This increased shear stress on the endothelium may cause a decrease in the synthesis and release of _______ from the endothelium, which will result in reduced __________.

35) During of your clinical rotations, you are helping prepare a patient for mobility on the cardiac step-down unit. You place the telemetry leads but are not confident in your recall of the normal orientation. You place them as shown. A mannequin with ECG leads placed on the chest. The black lead attaches to the mannequin’s right upper chest. The white lead attaches to the left upper chest. The brown lead in on the upper abdomen. The green lead is on the right aspect of the abdomen. The red lead is on the left aspect of the abdomen. 

23) Which of the following best describes the rhythm in this ECG strip?