THE AORTA AND ITS MAJOR
This presentation is the property of its rightful owner.
Sponsored Links
1 / 13

THE AORTA AND ITS MAJOR BRANCHES PowerPoint PPT Presentation


  • 154 Views
  • Uploaded on
  • Presentation posted in: General

THE AORTA AND ITS MAJOR BRANCHES

Download Presentation

THE AORTA AND ITS MAJOR BRANCHES

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


The aorta and its major branches

THE AORTA AND ITS MAJOR BRANCHES

The aorta commences at the aortic valve, above the vestibule of the left ventricle and terminates in the abdomen at the level of the fourth lumbar vertebra (L4), where it bifurcates to form the right and left common iliac arteries. It is an elastic artery and it is divisible into four parts, viz:

The Ascending thoracic aorta.

The Arch of the aorta.

The Descending thoracic aorta and

The Abdominal aorta.


The aorta and its major branches

ASCENDING THORACIC AORTA:

This is located in the middle mediastinum and measures 5cm long. It has the following branches through which it supplies the heart:

Right coronary artery.

Left coronary artery


The aorta and its major branches

THE ARCH OF THE AORTA:

This is located in the superior mediastinum.

It is the continuation of the ascending aorta.

Its branches are:

The Brachiocephalic trunk. This gives rise to:

Right Common Carotid artery.

Right Subclavian artery.

Left Common Carotid artery.

Left Subclavian artery.


The aorta and its major branches

Each common carotid artery:

Bifurcates to give rise to an:

internal carotid artery and

external carotid artery.

The internal carotid continues into the cranial cavity to supply cranial contents while the external carotid supplies the head and neck region.


The aorta and its major branches

The Subclavian artery:

The subclavian artery supplies structures in the head and neck and the thoracic regions through the following branches:

Vertebral artery.

The thyrocervical artery.

The internal thoracic (Mammary) art.

The costocervical artery

The dorsal scapular artery

Each Subclavian artery continues as the axillary artery at the outer margin (Lateral margin) of the first rib.

The axillary artery is the main arterial supply to the upper limb.


The aorta and its major branches

THE DESCENDING THORACIC AORTA

This artery is the direct continuation of the arch of the aorta.

It passes through the posterior mediastinum and terminates posterior to the median arcuate ligament of the diaphragm at the level of the 12th thoracic vertebra (T12).

At this point it continues into the abdominal cavity as the Abdominal aorta.


The aorta and its major branches

The branches of the Thoracic Aorta include:

9 pairs of Posterior intercostal arteries.

A pair of subcostal arteries.

2 left bronchial art.

2 oesophageal art.

Pericardial branches (Unknown number).

Mediasternalbranches (Unknown number).

A pair of Superior Phrenic art. (Right & Left).


The aorta and its major branches

THE ABDOMINAL AORTA

This is the continuation of the descending thoracic aorta from the level of T12.

It is located on the posterior abdominal wall and terminates at the level of L4.

Here it bifurcates to give rise to the right and left Common iliac arteries.


The aorta and its major branches

The branches of the Abdominal Aorta include:

Coeliactrunk. ( Foregut)

Superior mesenteric art. (Midgut)

Inferior mesenteric art. (Hindgut)

Median sacral art. (Posterior pelvic wall)

2 Renal art. (The Kidneys)

1 Middle suprarenal art.

2 Testicular/Ovarian art.

2 Inferior phrenic art.

4 pairs of Lumbar art.


The aorta and its major branches

Each of the Common iliac arteries will bifurcate at the level of the sacroiliac joint to give rise toInternal and External iliac arteries.

The internal iliac artery will supply the pelvic, perineal and gluteal regions.

The external iliac continues as theFemoral artery beyond the inguinal ligament to supply the entire lower limb.


  • Login