Hazardous Mataterial - Recognizing and Identifying the Hazards No. 2 Questions taken from Jones & Bartlett Fundamentals of Fire Fighter Skills (3rd Edition) Progress Indicator: Question 3 of 20 3.  When referring to blood pressure, ____________ is the relaxing phase of the heart and __________ is the contraction phase of the heart. Choices: Biostolic, systolic Systolic, biostolic Diastolic, systolic Systolic, diastolic