The veins are what transport key nutrients to the rest of the body's systems. Without the veins, the body systems would not function. For example, the veins have pathways to the brain which relies entirely on the many nutrients the blood provides it.
the organs and veins in your body
veins and lungs
Because the veins in your foot are not as deep as other veins in your body are.
The heart works with other body systems by constantly pumping blood to all parts of the body. It is the engine of the circulatory system, which provides tissues with oxygen.
Veins carry blood to the heart. Arteries carry blood from the heart to the body.
Every body system is affected by every other body system.
Your body is the sum of all its systems. There are no "other systems". All the body's systems have to be working together or the body will not be able to stay alive.
stroke is caused by veins/arteries in your brain clogging or bursting. If only effects half of your body. so if the blood problem is in the right side of your brain, then the left side of your body will be unresponsive, and vice-a-versa.
the brain
The digestive system is different from the other human body systems because the digestive system holds food and no other human body system does also the digestive system has organs that none other human body systems have.
While all organ systems are linked to some degree, you probably mean the endocrine system, which produces hormones.
Pulmonary veins are responsible for carrying oxygenated blood from the lungs back to the left atrium of the heart. This differentiates the pulmonary veins from other veins in the body, which are used to carry deoxygenated blood from the rest of the body back to the heart