Anatomy Bones and Muscles · MU Pleven

96. Aorta – general review

Covers the aorta's segments in order: the ascending aorta leaving the left ventricle, the aortic arch, and the descending aorta split into thoracic and abdominal parts, with levels and passages through the mediastinum and diaphragm. Also lists the coronary arteries arising from the aortic sinuses, and the branches of the arch and thoracic aorta, set out as nested outlines.

Inside: 3 sections · 3 labelled pictures · 8 flashcards · 2 min

Topic 95 of 236 in the MU Pleven syllabus for Anatomy Bones and Muscles (Medicine, Year 2). The free AceMed note covers it in 3 sections, about 349 words (2 min of reading), with 8 flashcards.

In this note

  1. Introduction
  2. AORTA
  3. Aorta

Introduction

III

AORTA

→ The largest and longest artery of the human body

  1. 1 Ascending aorta (aorta ascendens) – T4–T3
  • – arises from the left ventricle and continues as the aortic arch in the superior mediastinum
  1. 2 Aortic arch (arcus aortae) – to the top of T2
  • – passes dorsally and to the left in the superior mediastinum
  1. 3 Descending aorta (aorta descendens) – T3–L4
  2. 3.1 Thoracic aorta (aorta thoracica) – T3–T12
  • – passes on the left side of the vertebral column and then in front of vertebrae in the inferior mediastinum
  • – passes through the aortic hiatus of the diaphragm at the level of T12 and changes here into the abdominal aorta
  1. 3.2 Abdominal aorta (aorta abdominalis) – T12–L4
  • – passes in front of the vertebral column inside the retroperitoneal space
  • – bifurcates into the right and left common iliac arteries at the level of L4

Aorta

  • Ascending
  • Right coronary artery
  • O: Right aortic sinus
  • S: R atrium & ventricle
  • Con Rib Sex Mg Pan | from topic 107
  • ...nus ...n.
  • R. marginal
  • SA node art.
  • Post. Interventric
  • Atrial branches.
  • Left coronary artery
  • O: Left aortic sinus
  • S: L. atrium & ventricle
  • Anterior Atrioventricular artery
  • Conus
  • Proximal lateral
  • Distal lateral.
  • Circumflex art.
  • Conus
  • Marginal
  • L. Atrial
  • Aortic Arch
  • Brachiocephalic Trunk
  • O: Behind the mandibulum of the sternum
  • • Unpaired
  • Behind the r. Subclavian vein
  • R. Subclavian art.
  • O. near the 1st rib
  • S: → R. upper extremity → part of the neck, head, ↑ brain → Sup. part of the thorax & back.
  • R. common carotid art.
  • O: near 1st rib
  • S: part of the neck, head, brain.
  • at 4C in Carotid triangle
  • External carotid art.
  • Internal carotid art.
  • left common carotid art.
  • O: near the head of 1st rib
  • S: part of the head, neck & back.
  • L. Subclavian art.
  • " "
  • S: L. upper extremity → head, brain & neck → sup. of thorax & back.
  • Descending
  • Abdominal aorta
  • Thoracic
  • O: begins at the lower of T3
  • Descends on the left side of V.C & esophagus.
  • Post. intercostal arteries
  • Subcostal ar.
  • Sup. phrenic ar.
  • Bronchial Bronchus
  • Oesophageal
  • Pericardic Mediastinal

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