Which of the following is TRUE regarding capillaries?
A) They consist of three layers or coats.
B) The thinnest layer is the tunica adventitia.
C) They contain valves to limit back flow of blood.
D) Red blood cells move through in single file.
Question 2
The primary factor in loss of control of the ambulance is:
A) trying to stop too quickly on wet roadways.
B) drivers stopping suddenly in front of the ambulance.
C) talking on the cell phone while trying to drive.
D) driving too fast for current road conditions.