AORTA AND PERIPHERAL ARTERIES ANATOMY And VISUALIZATION PPT

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AORTA AND PERIPHERAL ARTERIES ANATOMY And VISUALIZATION Presentation Transcript:
1.AORTA AND PERIPHERAL ARTERIES ANATOMY & VISUALIZATION

2.The Aorta
After originating from LV (about 3 cm in diameter ), it ascending for a short distance, arches backward and to the left side, descends within the thorax on the left side of the vertebral column
Portions of aorta
Ascending aorta
Arch of the aorta and
Descending aorta (thoracic and abdominal aorta) 

3.About 5 cm. in length
Passes obliquely upward, forward, and to the right, as high as the upper border of the second right costal cartilage
At its origin, three small dilatations called the aortic sinuses
At the union of the ascending aorta with the aortic arch, the caliber of the vessel is increased, owing to a bulging of its right wall. This dilatation is termed the bulb of the aorta
Only branches of the ascending aorta are the two coronary arteries

4.Arch of the Aorta Begins at the level of the upper border of the Rt 2nd sternocostal joint
First runs upward, backward, and to the left, infront of the trachea, then directed backward on the left side of the trachea and finally passes downward on the left side of the body of T4, at lower border of which it becomes continuous with the descending aorta
Forms two curvatures: one with its convexity upward, the other with its convexity forward and to the left

5.Branches of arch of aorta
Three in number-
Innominate artery
Left common carotid artery
Left subclavian artery

6.CCA= common carotid artery

VA= vertebral artery

SCA= subclavian artery

7.Descending Aorta Thoracic Aorta
Contained in the posterior mediastinal cavity
Begins at the lower border of the T4
Ends in front of the lower border of the T12 vertebra, at the aortic hiatus in the diaphragm

8.Branches of the Thoracic Aorta
Visceral
Pericardial
Bronchial
Esophageal
Mediastinal
Parietal 
Intercostal.- usually 9 pairs
Subcostal.
Superior Phrenic.

9.Abdominal aorta
Begins at aortic
hiatus of diaphragm
In front of lower
  border of T12
Descending in front
 of the vertebral column
Ends on L4-body,
  a little to Left of midline
Summit of the convexity
  corresponding to the L3

10.Visceral Branches
 Celiac.
 Superior Mesenteric.
 Inferior Mesenteric.
 Middle Suprarenals.
 Renals.
 Internal Spermatics.
 Ovarian (in the female)
Parietal Branches
 Inferior Phrenics.
 Lumbars.
 Middle Sacral.
Terminal Branches
 Common Iliacs.

11.Short thick trunk
˜1.25 cm length
Arises from the front of the aorta, just below the aortic hiatus of the diaphragm
Between T12 & L1
Passing nearly horizontally forward
3 large branches
Left gastric A - smallest
Hepatic A
Splenic A - largest

12.Superior Mesenteric Artery
Large vessel
Arises from front of aorta, at L1, ~1.25 cm below Coeliac A
Passes downward and forward, to the right iliac fossa
Supply small intestine (expt superior Duo),
   Cecum, Asc Colon & Rt ½ Transverse Colon

13.SMA-Branches
Inferior Pancreatico-duodenal
Middle Colic
Right Colic
Ileocolic
Intestinal

14.Smaller than SMA
Arises from aorta at L3, about 3 or 4 cm above its division
Passes downward, posterior to the peritoneum
Continued into pelvis as Superior hemorrhoidal artery & ends on the upper rectum
Supply Lt ½ transverse colon, descending & sigmoid colon, and most of the rectum

15.Inferior Mesenteric Artery branches
Left Colic A
Sigmoid branches
Superior Hemorrhoidal A