What assists in moving venous blood back to the heart?

Valves and muscle contractions assist in moving venous blood back to the heart.

Muscles around the vein contract to squeeze blood through the vein, while valves are like flaps located inside the vein where is opens when the pressure of blood coming towards it is high enough, then closes when the blood flows through so that to ensure blood does not backflow and to ensure one way flow of blood towards the heart.

Peristalsis do not happen in veins, which means, the veins do not move or contract itself in order to move the blood, which is unlike some other systems like the alimentary canal.

the peripheral nervous system or pns contains the nerves, which leave the brain and the spinal cord and travel to certain areas of the body. the peripheral nervous system's main job is to send information gathered by the body's sensory receptors to the cns as quickly as possible.

the cells uses some of the atoms of the glucose molecules to atp molecules. the atoms of the glucose molecules will then be converted into energy which will be eventually stored in atp. the energy produced which are stored in atp are coming from the glucose’s chemical bonds.