The cardiac cycle consists of alternate periods of emptying and filling, also ca
ID: 270096 • Letter: T
Question
The cardiac cycle consists of alternate periods of emptying and filling, also called: O systole and diastole O resting and contracting O charging and discharging O AV firing and SA firing QUESTION 11 What enzyme dissolves the clot as part of the healing process? O plasmin O hexokinase O lipase O amylase QUESTION 12 What is the average life span of a red blood cell in the human body O 120 days O 200 days O 12 days ( 20 days QUESTION 13 What is the average respiratory rate under resting conditions for most people? ? 12 O 15 018 O 21Explanation / Answer
10 Ans: the alternate periods of heart cycle are Systole and diasstole. during systole perios the heart contracts to pump the blood to hole body parts through blood vessel, during the diastole the heart relaxes thus recive the blood from the all parts of the body therefore the contraction of the heart is systole and relaxation of the heart is diastole.
11 Ans: Plasmin. Plasmin is a enzyme(protease) which dissolve the blood clots made by fibrin protein.
12. 120. the average life span of the Red Blood Cells(RBC) is normally 100-120 days. RBCs lack of necleus. the death of the RBC occur on the Spleen after completion of 120 days. so that the spleen also called grave yard of the RBC.
13. the average respiratory rate of adults at normal condtion is 12-18 breaths for minute. when in reting cinditins it is 12 breaths for minute.
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