Which blood vessel has these characteristics? outer layer of connective tissue, a thick layer of smooth muscle with elastic fibers, no valves
A) vein
B) artery
C) venule
D) capillary
Answer: B
Which blood vessel has these characteristics? outer layer of connective tissue, a thick layer of smooth muscle with elastic fibers, no valves
A) vein
B) artery
C) venule
D) capillary
Answer: B