Subcostal arteries

Blood vessels

Subcostal arteries

Details
Source| Thoracic aorta
Vein| Subcostal vein
Identifiers
Latin| arteria subcostalis
TA98| A12.2.11.020
TA2| 4202
FMA| 4613
Anatomical terminology

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The subcostal arteries, so named because they lie below the last ribs, constitute the lowest pair of branches derived from the thoracic aorta, and are in series with the intercostal arteries.

## Anatomy

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### Course and relations

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Each intercostal artery is accompanied by the corresponding (i.e. ipsilateral) subcostal vein and nerve.[1]: 276 Each passes along the lower border of the 12th rib.[2]

Before entering the anterior abdominal wall, each runs laterally upon the anterior surface of the lumbar fascia (and thus also anterior to the underlying quadratus lumborum muscle which the lumbar fascia envelops) posterior to the ipsilateral kidney.[1]: 276 It then pierces the posterior aponeurosis of the transversus abdominis,[citation needed] thus entering the anterior abdominal wall to course in between the abdominal internal oblique muscle and transverse abdominal muscle (the neurovascular plane of the anterior abdominal wall).[1]: 276

### Branches

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Each subcostal artery gives off a posterior branch which has a similar distribution to the posterior ramus of an intercostal artery.[2]

### Anastomoses

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It anastomoses with the superior epigastric, lower intercostal, and lumbar arteries.[2]

## References

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1. ^ a b c Sinnatamby, Chummy (2011). Last's Anatomy (12th ed.). p. 395\. ISBN 978-0-7295-3752-0.
2. ^ a b c Gray, Henry (1918). Gray's Anatomy (20th ed.). p. 601.

This article incorporates text in the public domain from page 601 of the 20th edition of Gray's Anatomy (1918)

## External links

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* Anatomy figure: 21:06-06 at Human Anatomy Online, SUNY Downstate Medical Center - "Branches of the ascending aorta, arch of the aorta, and the descending aorta."

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Arteries of the torso and chest

Lungs|

* Pulmonary artery
* Right
* Left (Ligamentum arteriosum)

Heart|

* Coronary circulation
* Right coronary:
* SA nodal
* AV nodal
* Atrial
* Right marginal
* Posterior descending

* Left coronary:
* Left anterior descending
* Left circumflex (Left marginal)

Aorta|

| Sections|

* Ascending aorta
* Aortic arch
* Descending aorta
* Thoracic aorta
* Abdominal aorta
* Aortic body

|

Aortic arch|

| Brachiocephalic|

* Thyreoidea ima
* Right subclavian
* Right common carotid

|

Left
common carotid|

* External carotid
* Internal carotid

* Carotid body
* Carotid sinus
* Carotid bifurcation

Left
subclavian|

* Internal thoracic: Anterior intercostal
* Thymic
* Pericardiacophrenic
* Perforating branches
* terminal (Musculophrenic, superior epigastric)
* Costocervical trunk: Highest intercostal (Posterior intercostal 1–2)
* Deep cervical

Descending
aorta|

* visceral: Bronchial
* Esophageal
* Mediastinal

* parietal: Posterior intercostal 3–11
* Subcostal
* Superior phrenic

Portal:

* Anatomy

Authority control databases |

* Terminologia Anatomica

|

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