ANATOMY

Detailed explanation-1: -Spider veins (also called telangiectasia) are small veins that become enlarged and are visible under the skin. may have spider veins, which are enlarged capillaries. Capillaries are tiny, extremely thin-walled vessels that act as a bridge between arteries (which carry blood away from the heart) and veins.

Detailed explanation-2: -Several factors may cause veins to appear to shrink. Aging, a decrease in muscle tone, and weight gain are common reasons for veins appearing smaller. A vein doctor should always be consulted. However, in some cases, it may indicate vein disease.

Detailed explanation-3: -Venules: Veins begin as tiny vessels called venules and get gradually larger as they near your heart. Venules receive blood from capillaries.

Detailed explanation-4: -Many people get them because they sit or stand for long periods most days of the week. These veins also become more common with age and during pregnancy. Spider veins can also be caused by sunlight, hormonal changes, or an injury.

Detailed explanation-5: -Venules. Venules are the smallest veins and receive blood from capillaries. They also play a role in the exchange of oxygen and nutrients for water products. There are post-capillary sphincters located between the capillaries and venules.