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
(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.
Superior Mesenteric Vein
Inferior Mesenteric Vein
Splenic Vein
Left Gastric Vein
Right Gastric Vein
Cystic Vein
Paraumbilical Vein
4 、 tributaries
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