Question

question 59 1.6/pts valves in veins cause venous blood flow to go in only one direction. make the use of a skeletal muscle pump unnecessary for venous blood flow. are formed of the tunica media. are the leading cause of high blood pressure. are found only in the largest veins.

Explanation:

Valves in veins prevent back - flow of blood, ensuring that venous blood flows in one direction towards the heart. Skeletal muscle pump still aids venous return. Valves are not formed of tunica media, not a leading cause of high blood pressure, and are not only in largest veins.

Answer:

cause venous blood flow to go in only one direction.