13. At rest, a person has a heart rate of 70 and a stroke volume of 70. The person begins to run and experience tachycardia, but stroke volume remains the same. What statement can you truthfully make? A) cardiac output would increase
B) heart rate would increase
C) ventricular contraction rate would decrease
D) A and B
E) None of the above

7. Select the most accurate statement.
A) Granulocytes consist of basophils, monocytes, erythrocytes
B) Neutrophils are granular lymphocytes
C) Basophils contain histamines
D) A and C
E) None of the above are accurate

20. If a person is out jogging and their stroke volume is 50 while their heart rate is
200; What is their Cardiac output?
A) 1 liter/min
B) 400ml/min
C) 10 liters /min
D) 4liters/min
E) 40mlmin/