Which statement best explains this type of blood vessel and the function of these vessels’ valves? these are arteries, which prevent the backflow of blood because the walls have little muscle to pump blood back to the heart. these are veins, which prevent the backflow of blood because the walls have little muscle to pump blood back to the heart.

Jen is reviewing information about a new treatment for arthritis pain that she saw on an informational website. most of the information is testimonials from satisfied users. which best indicates that this information is unreliable? it is not paid for by product sponsors. it is on a website that is not run by professionals. its claims are based mostly on anecdotal evidence. its claims are not supported by the provided information.

Astructure within a cell that performs one or more specific functions

Functional disorders are mental disorders that are caused by a physical illness or an injury that affects the brain's ability to function. true or false