nataliemandisi2005 nataliemandisi2005

04-09-2020
Biology

contestada

Explain how valves help the transport of blood in veins.

Respuesta :

nazz1010 nazz1010

04-09-2020

Answer:

The valves' main job is to keep the blood moving in one direction – back up towards the heart. When the valve is open, blood freely flows upward towards the heart and when the valves are closed, blood cannot flow back

Answer Link

Otras preguntas

Look at photo please. Negatives, positives, and fractions

Please help!! What is the lateral area of the prism?

4/3x3.14x5x5x5 volume

mr. Hightower recorded the amount of each project that had been completed at the end of the week. the line plot describes the information he record ed. what fra

what is the information about carbon

Which American Indian nation risisted removal in a way that hurt the U.S. efforts in the southeast?

Argumentative text on recognition of human rights as the basis of social coexistence

Picture a person standing with a drawn bow and arrow. He is aiming it at a bull's eye target. What type of energy is being described?

Where can you find hydrochloric acid in your body? What does it do?

Free verse poetry is written to soundlike A. a rhythmic rap. B. folk songs. C. everyday speech. D. music.