Question

question 26 (2 points) which of the following correctly matches a blood vessel to its physical characteristics? veins: thick walls, tiny diameter, no valves capillaries: thin walls, tiny diameter, no valves veins: muscular walls, tiny diameter, have valves arteries: large diameter, muscular walls, have valves arteries: tiny diameter, muscular walls, no valves

Explanation:

Capillaries have thin walls to allow for gas and nutrient exchange, a tiny diameter to fit between cells, and no valves. Veins have thin - to - moderately thick walls, larger diameter compared to capillaries, and valves to prevent back - flow of blood. Arteries have thick, muscular walls to withstand high blood pressure, larger diameter than capillaries, and no valves (except at the exit of the heart).

Answer:

B. capillaries: thin walls, tiny diameter, no valves