The Northcoast Medical Training Academy describes rolling veins as veins that move or roll from side to side, which makes drawing blood difficult. In order to prevent this, patients need to stay well-hydrated. More »

The waxy coating on leaves is called the cuticle. The cuticle lets water roll off the surface of the leaves and helps protect the plant from disease. More »

Doctors perform liver function tests by obtaining a blood sample from the patient in a hospital or specialized testing facility, explains Healthline. A nurse cleans the patient's skin prior to the test to prevent contami... More » Health Diagnostics & Imaging

Portal hypertension is blood pressure elevation in a group of veins called the portal venous system, states WebMD. Liver damage causes this condition by prohibiting proper blood flow through the liver. Portal hypertensio... More » Health Conditions & Diseases Cardiac Health

Vascular surgeons specialize in diagnosing and treating illnesses affecting the body's veins, arteries and lymphatic systems, explains the American College of Surgeons. They obtain a board certification in general surger... More » Health Conditions & Diseases Cardiac Health

In a Cardiolite stress test, the patient has nuclear dye injected into his veins and is asked to exert himself with exercise, according to The dye eventually makes it into the heart through the circulatory sys... More » Health Conditions & Diseases Cardiac Health

Treatment for venous insufficiency includes elevating the legs, wearing compression stockings, keeping legs uncrossed when sitting and exercising to relieve pressure in the veins of the legs; sclerotherapy, in which the ... More » Health Conditions & Diseases Cardiac Health