Answer:
the last choice.
Explanation:
veins have valves because venous pressure is often not great enough( as the blood must overcome gravity and other forces) to return the blood to the heart.
valves mainly prevent the back flow of blood.
Answer:
b
Explanation:
ability to move quickly and easily.
I'm a bit confused. What are you asking exactly? Maybe I could help then...
What the question here are u askin wat type it is?...
Answer:
Safety
Explanation:
When preparing to transfer a resident, safety is your main priority.
Hope that helps!