Which of the cells in the diagram are found in the walls of blood vessels where they function to narrow or widen the path for blood flow through that vessel?
A)A
B)B
C)C
D)D

Question

Which of the cells in the diagram are found in the walls of blood vessels where they function to narrow or widen the path for blood flow through that vessel? 
A)A 
B)B 
C)C 
D)D

Quizplus · Accepted Answer

The Answer of Which of the cells in the diagram are found in the walls of blood vessels where they function to narrow or widen the path for blood flow through that vessel? 
A)A 
B)B 
C)C 
D)D

Which of the Cells in the Diagram Are Found in the Walls