WordNet

moving or going or growing upward; "the ascending plane"; "the ascending staircase"; "the ascending stems of chickweed"
the large trunk artery that carries blood from the left ventricle of the heart to branch arteries

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大動脈

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2014/11/14 09:45:47」(JST)

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The ascending aorta (AAo)^[1] is a portion of the aorta commencing at the upper part of the base of the left ventricle, on a level with the lower border of the third costal cartilage behind the left half of the sternum; it passes obliquely upward, forward, and to the right, in the direction of the heart’s axis, as high as the upper border of the second right costal cartilage, describing a slight curve in its course, and being situated, about 6 centimetres (2.4 in) behind the posterior surface of the sternum. The total length is about 5 centimetres (2.0 in).

Components

The aortic root is the portion of the ascending aorta beginning at the aortic annulus and extending to the sinotubular junction. Between each commissure of the aortic valve and opposite the cusps of the aortic valve, three small dilatations called the aortic sinuses.

The sinotubular junction is the point in the ascending aorta where the aortic sinuses end and the aorta becomes a tubular structure.

Relations

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, and on transverse section presents a somewhat oval figure.

The ascending aorta is contained within the pericardium, and is enclosed in a tube of the serous pericardium, common to it and the pulmonary artery.

The ascending aorta is covered at its commencement by the trunk of the pulmonary artery and the right auricula, and, higher up, is separated from the sternum by the pericardium, the right pleura, the anterior margin of the right lung, some loose areolar tissue, and the remains of the thymus; posteriorly, it rests upon the left atrium and right pulmonary artery.

On the right side, it is in relation with the superior vena cava and right atrium, the former lying partly behind it; on the left side, with the pulmonary artery.

Branches

The only branches of the ascending aorta are the two coronary arteries which supply the heart; they arise near the commencement of the aorta from the aortic sinuses which are opposite the aortic valve.

Additional images

Front view of heart and lungs.
The arch of the aorta, and its branches.
thumb|Fetal ascending aorta
Ascending aorta
Ascending aorta
Ascending aorta
Ascending aorta
Ascending aorta
Ascending aorta
Ascending aorta

References

This article incorporates text from a public domain edition of Gray's Anatomy.

^ Logan, Carolynn M.; Rice, M. Katherine (1987). Logan's Medical and Scientific Abbreviations. Philadelphia: J. B. Lippincott Company. p. 3. ISBN 0-397-54589-4.

External links

1905918009 at GPnotebook
Ascending+aorta at eMedicine Dictionary

UpToDate Contents

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English Journal

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Impact of fasting on (18)F-fluorocholine gastrointestinal uptake and detection of lymph node metastases in patients with prostate cancer.

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Japanese Journal

Cardiovascular Surgery : Brain Protection During Ascending Aortic Repair for Stanford Type A Acute Aortic Dissection Surgery : Nationwide Analysis in Japan

Tokuda Yoshiyuki,Miyata Hiroaki,Motomura Noboru [他]
Circulation journal : official journal of the Japanese Circulation Society 78(10), 2431-2438, 2014-10
NAID 40020204369

Alternative redo sternotomy in a patient with tracheostoma and patent grafts.

Uehara Kyokun,Minakata Kenji,Funamoto Masaki,Yamazaki Kazuhiro,Marui Akira,Sakata Ryuzo
Asian cardiovascular & thoracic annals 22(7), 852-854, 2014-09
… Preoperative investigations revealed that the patent right internal thoracic artery graft ran directly under the sternum just anterior to the ascending aorta, and a saphenous vein graft was adhering to a surgical wire. …
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症例外傷性胸部(上行弓部)大動脈損傷の1例

金森太郎,市原哲也,坂口秀仁 [他]
胸部外科 = The Japanese journal of thoracic surgery 67(6), 483-485, 2014-06
NAID 40020108881

Related Pictures

★リンクテーブル★

リンク元	「上行大動脈」「AAo」
関連記事	「ascending」

「上行大動脈」

Artery: Ascending aorta
	The ascending aorta and arch of aorta with their branches
	Course of the ascending aorta (anterior view), as it passes dorsally to the pulmonary trunk but ventrally to the right pulmonary artery.
Latin	Aorta ascendens,; pars ascendens aortae
Gray's	p.545
Supplies	The entire body, with exception of the respiratory zone of the lung
Source	Left ventricle
Branches	Left coronary artery, right coronary artery and continues as the arch of aorta
Vein	Combination of superior and inferior vena cava and coronary sinus
Precursor	Truncus arteriosus