Anatomy study note · Thorax

Pulmonary veins

Veins carrying oxygenated blood from the lungs to the left atrium; two leave each lung.

Key points

• 4 in total (2 per lung) → left atrium.
• Carry oxygenated blood.
• Intersegmental: run BETWEEN segments.
• 1 vein absorbed → 4 openings in the left atrium.
• Venae cavae/pulmonary veins: cardiac muscle in adventitia near the heart.
• Vein: thin wall, adventitia thickest, valves.

The full note in the atlas also covers

Features · Histology · Development

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Written from

• Snell’s Clinical Anatomy by Regions, 10th ed., ch. 5, PDF pp. 584, 614, 650
• Inderbir Singh’s Human Embryology, ch. 15, PDF pp. 232–233, 246
• BRS Cell Biology & Histology, 7th ed., ch. 11, PDF pp. 203–205, 204; ch. 15, PDF p. 280

More from the thorax

• Ribs
• Right atrium
• Right coronary artery
• Right ventricle
• Serratus posterior muscles
• Sternum
• Superior vena cava
• Sympathetic trunk
• Thymus
• Trachea
• Tricuspid valve
• Vagus nerve

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