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40. Name this structure:

16. Papillary muscles:

48. What are the ? marks designating?

23. Severe hemorrhage (assuming a normal heart) would directly result in:

24. A period during the cardiac cycle in which the LV pressure is falling, but the LV volume is remaining the same is known as:

34. Name this section of the aorta:

18. Oxygen content is normally higher in the:

7. Which valve is a semilunar valve?

What is the driving force of simple diffusion? What is the source of energy for active transport?

Psychological research involves studying a sample of participants in order to draw conclusions about the population from which the sample is drawn. This is an example of