Covers the veins of the thoracic wall, starting with anterior and posterior intercostal veins and their drainage into the internal thoracic, azygos and hemiazygos systems, shown in tables by rib pair. It then moves to abdominal wall veins, using the LATTE and ICE mnemonics for superficial and deep drainage routes, and ends with the internal and external vertebral venous plexuses, intervertebral veins and segmental drainage by region.
Topic 109 of 236 in the MU Pleven syllabus for Anatomy Bones and Muscles (Medicine, Year 2). The free AceMed note covers it in 10 sections, about 484 words (4 min of reading), with 10 flashcards.
In this note
THORACIC WALL VEINS
Intercostal veins :
ABDOMINAL WALL VEINS
Anterior Abdominal Wall:
Posterior Abdominal wall:
VERTEBRAL COLUMN VEINS
Internal Vertebral Venous Plexus
External Vertebral Venous Plexus
Intervertebral Veins
Segmental Drainage
Intercostal veins :
Anteriorly : 2 veins in each intercostal space.
Posteriorly : 1 vein in " " "
Anterior intercostal veins have the same arrangement and mode of drainage on both sides.
Posterior " " " " different mode " " "
Ant. intercostal veins :
Because : 1st-6th intercostal arteries arise from internal thoracic artery.
7th-9th " " " musculophrenic branch
Posterior intercostal veins
Left 2nd + 3rd → join at T7 vertebra → Azygos vein
Left 4th-8th and 9th-11th → join at T8 vertebra → Azygos vein
Anterior Abdominal Wall:
The same as the arteries:
Below the umbilicus: "ICE"
1. Superficial iliac circumflex v.
2. Superficial Epigastric v. ] from femoral v.
Upper to the umbilicus "LATTE" (axillary v.)
1. Lateral thoracic v.
2. Inf. Epigastric v.
3. Sup. Epigastric v.
lateral thoracic v. & Sup. Epigastric v. make anastmoses Thoraco-Epigastric v. → drain into IVC.
*If IVC is blocked the blood goes to the SVC.
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