Bloody or tarry stools refer to a stool sample thatâs either dark red or black in color. Bloody or tarry stools can indicate bleeding or other injuries in your gastrointestinal tract. You may also have dark, discolored bowel movements after eating dark-colored foods.
The longest vein in the body is the great saphenous vein, a superficial vein found in the leg.he deep veins are essenti â¦ ally a column of blood running from your head to you feet and so when one is standing are under high pressure. In order to keep this pressure away from the frail superficial veins the penetrating veins have valves.
The sartorius muscle (/sÉrËtÉÉri.És/) â the longest muscle in the human body â is a long thin superficial muscle that runs down the length of the thigh in the anterior compartment.n anatomical significance of the sartorius muscle is that it forms one of the boundaries of the femoral triangle along with the inguinal ligament and the adductor longus muscle. The femoral triangle contains the femoral artery, vein and nerve.