Stress because you tighten up. Make a fist right now and you will see your veins tighten. that's because you are stretching the vein and it applies pressure to the below muscle making it visible.
In the lower right side of the heart. when the heart pumps it causes the coronary veins to pump outward.
blood
no Yes they are. Some are just more visible that others due to how close to the skin they are and the thickness of the fat layer. During puberty and breast development, the skin will become stretched and thinner and more transparent allowing some veins to stand out more. These should become less visible with time.
The walls of the affected veins lose their elasticity in response to increased blood pressure. As the vessels weaken, more and more valves are unable to close properly. The veins become larger and wider over time and begin to appear as lumpy
Because skinny people have less or no fat on them which causes more veins to show throuought their body......really depends on the person tho i have veins on bith sides of my head and im very skinny as well
Blood from the capillary beds of the right breast drains into the right internal thoracic vein or right axillary vein, then into the superior vena cava. It then travels to the heart, where it is pumped to the lungs for oxygenation and returned to the left atrium through the pulmonary veins before being distributed to the left breast via the aorta and branching arteries.
I have never heard of leg cramps or needle pain as a symptom but definitely frequent urination, lower back pain, excess saliva, breast tenderness, darker veins and cramping.
Dehidration is a major cause in sunken veins.
Varicos veins, more commonly referred to as spider veins, can have several different causes. Pregnancy, weight gain, and standing for several hours each day are just a few causes.
The skull is in the way
No. This is not a sign of breast cancer (at least 99% plus, of the time). However, if there are any significant (or rapid) changes in the appearance of the breast, consult your physician.