The location of the vein, the introduction of the vein

Carefully touch the elastic or furrow sensation with your fingers on the ulnar side of the forearm and the dorsal edge of the ulnar head to find the vein.

The vein is one of the superficial veins of the upper limbs. On the ulnar side of the forearm. After receiving blood from the ulnar side, this vein gradually turns from the dorsum of the hand to the flexor side of the forearm, receives the median elbow vein at the cubital fossa, and injects it into the brachial vein or the axillary vein ascending with the brachial vein through the fascia propria at about the midpoint of the upper arm.

This vein is often used in clinical practice for puncture blood transfusion, fluid rehydration, blood drawing tests, etc.

Varicose veins refer to the tortuosity and dilation of veins due to factors such as blood stagnation and weak venous walls. Varicose veins can occur in many parts of the body, such as hemorrhoids are actually a kind of varicose veins, and clinical manifestations include esophageal and gastric varices, varicoceles and abdominal wall varices. Varicose veins most often occur in the lower extremities.

It is worth emphasizing that varicose veins are secondary manifestations of other lesions.

If it is simple superficial varicose veins of the lower limbs, the general clinical symptoms are mild, the progression is slow, and most of them are manifested as simple varicose veins, and in a few cases, there may be thrombophlebitis, venous ulcers, etc.; If it is a deep vein valve insufficiency, or even a deep venous return obstruction, the condition is relatively serious, the calf has a feeling of heaviness when standing, easy fatigue, and even swelling and bursting pain of the lower limbs, and the later stage will occur ** nutritional changes, desquamation, atrophy, pigmentation, eczema ulcer formation.

The vein originates from the ulnar side of the venous network on the dorsum of the hand, ascends to the volar side of the forearm, and receives the median elbow vein at the cubital fossa to communicate with the cephalic vein, and the main trunk of the vein continues to ascend along the medial border of the biceps brachii and finally injects into the axillary vein.

There are veins all over the body. The vein is the tube in the cardiovascular system that guides the delivery of blood back to the heart, the wall of the vein is relatively thin, the composition of smooth muscle and elastic fibers is relatively small, it lacks contractility and elasticity, and the lumen section of the vein is relatively flat. Veins need to be divided into large veins, medium veins, small veins and micro veins according to the size of the vein diameter.

The veins of the whole body can be divided into two types: pulmonary circulation and systemic circulation, and the pulmonary circulation veins include two pairs of upper and lower veins of the left and right lungs, which collect arterial blood from the lungs and inject them into the left atrium. The systemic veins include the superior vena cava, the inferior vena cava, and the cardiac venous system.