ACTIVITY 7 : PRACTICE ATLAS great vessels of heart anterior

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Last updated 1:15 AM on 1/22/26

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4 Terms

1

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Aorta

Origin:

Left ventricle (aortic vestibule)

Course:

Has three regions: ascending, arch, and descending
Ascending aorta: ascends short distance (5 cm) within pericardium
Arch of aorta: arches diagonally and posteriorly to the left
Descending aorta: has thoracic and abdominal parts
Thoracic part of descending aorta shifts from left side of vertebral column to midline position as it descends

Distribution:

All organs of body (via branches)

Branches:

Right and left coronary
Brachiocephalic
Left subclavian
Left common carotid
Esophageal
Bronchial
Posterior intercostal (11 pairs)
Subcostal
Celiac
Superior mesenteric
Inferior mesenteric
Middle suprarenal
Renal
Gonadal
Inferior phrenic
Lumbar
Median sacral
Continues as right and left common iliac

Comment:

Has aortic (semilunar) valve at origin
Large arteries do not by themselves supply structures, but do so through their branches

<p>Origin:</p><ul><li><p>Left ventricle (aortic vestibule)</p></li></ul><p>Course:</p><ul><li><p>Has three regions: ascending, arch, and descending</p></li><li><p>Ascending aorta: ascends short distance (5 cm) within pericardium</p></li><li><p>Arch of aorta: arches diagonally and posteriorly to the left</p></li><li><p>Descending aorta: has thoracic and abdominal parts</p></li><li><p>Thoracic part of descending aorta shifts from left side of vertebral column to midline position as it descends</p></li></ul><p>Distribution:</p><ul><li><p>All organs of body (via branches)</p></li></ul><p>Branches:</p><ul><li><p>Right and left coronary</p></li><li><p>Brachiocephalic</p></li><li><p>Left subclavian</p></li><li><p>Left common carotid</p></li><li><p>Esophageal</p></li><li><p>Bronchial</p></li><li><p>Posterior intercostal (11 pairs)</p></li><li><p>Subcostal</p></li><li><p>Celiac</p></li><li><p>Superior mesenteric</p></li><li><p>Inferior mesenteric</p></li><li><p>Middle suprarenal</p></li><li><p>Renal</p></li><li><p>Gonadal</p></li><li><p>Inferior phrenic</p></li><li><p>Lumbar</p></li><li><p>Median sacral</p></li><li><p>Continues as right and left common iliac</p></li></ul><p>Comment:</p><ul><li><p>Has aortic (semilunar) valve at origin</p></li><li><p>Large arteries do not by themselves supply structures, but do so through their branches</p></li></ul><p></p>

2

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Ligamentum arteriosum

Origin:

Left pulmonary artery

Course:

Ascends to attach to arch of aorta on its concave surface

Comment:

A fibrous cord
Remnant of ductus arteriosus in fetus
Ductus arteriosus shunts blood in fetus from pulmonary artery to aorta, thereby bypassing lungs

3

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Pulmonary trunk

Origin:

Right ventricle

Course:

Ascends within pericardium
Initially anterior to ascending aorta and then to its left and slightly posterior

Distribution:

Lungs

Branches:

Right pulmonary artery
Left pulmonary artery

Comment:

Conveys oxygen-poor blood from right ventricle of heart
Has pulmonary (semilunar) valve at its origin
Large arteries do not by themselves supply structures, but do so through their branches