VEIN

SHANDONG UNIVERSITY Liu Zhiyu

1 、 Capilaris 2 ． Have a thinner wall and a larger diameter than their corresponding arteries

4.Form venous plexus

and venous rete 。

6 ． sinuses of dura mater ， diploic veins 。

5 、。 superficial vein deep vein

3. Have venous valves which prevent reflux

of blood

Characteristic of veins

一、 pulmonary veins :

right superior pulmonary veins

right inferior pulmonary veins

Left superior pulmonary veins

Left inferior pulmonary veins

left atrium

1.   

Cardiac vein system Superior vena cava system

Inferior vena cava system (hepatic portal system)

二、 The systemic veins ：

The composition of systemic veins

It collect the blood from the head ,the neck ,the upper limbs,the thorcic wall and a portion of the organs within thorax

A. formation ：

It is formed by the junction of

the two brachiocephalic veins

B.The scope of collection ：

1. superior vena cava

（一） superior vena cava system

The angle of the union of the internal jugular vein and subclavicular vein is called Venous angle

internal jugular vein

subclavicular vein

Formation:

4. The branchiocephalic veins

Facial Vein

Angular vein

眼上、下 静脉

Deep Facial Vein

Pterygoid Venous Plexus

海绵窦

颈内静脉

Facial Vein

2 ． azygos v.

hemiazygos v

⑶accessory hemiazygos v.

⑵ hemiazygos v .

⑴azygos v.

（二） The inferior vena cana system

B.The scope of collection ：

The inferior vena cava receives blood from all structure below the diaphragm

A. formation :

The inferior vena cava is formed by the junction of the two common iliac veins

1. inferior vena cana

（ 3 ） .The common iliac vein

• It is composed by the

junction of the external

and internal iliac veins in

front of sacroiliac joint,

and collects the blood

from the pelvis and the

lower limbs

2 ． Superficial v.of upper limb 上肢浅静脉

（ 3 ） median cubital v.

（ 1 ） cephalic v. ：

（ 2 ） basilic v. ：

3 ． Superficial v.of lower limb

（ 1 ） great saphenous v. ：

superficial medial femoral v.

superficial lateral femoral v.

superficial epigastric v.

superficial iliac circumflex v.

external pudendal v.

(2) tributaries ：

great saphenous v

superficial medial femoral v.superficial iliac

circumflex v.

external pudendal v.

superficial lateral femoral v.

superficial lateral femoral v.

（四） Hepatic Portal Vein

3. character

2.collection:

1 、 formation ：

Superior Mesenteric Vein

Inferior Mesenteric Vein

Splenic Vein

Left Gastric Vein

Right Gastric Vein

Cystic Vein

Paraumbilical Vein

4 、 tributaries