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LUNGS & PLEURA
Dr.Amna Ijaz
• Introduction
• Shape
• Surfaces
• Borders
• Fissures
• Root or hilum
• Mediastinal surface
• Nerve supply
• Blood supply
The lungs are the vital organs of respiration. Their
main function is to oxygenate the blood by bringing
inspired air into close relation with the venous blood
in the pulmonary capillaries. During life the lungs are
soft, elastic and spongy.
The shape of each lung is conical with a rounded apex
and a broad base
Lungs
◦ have 2 surfaces
costal
(convex).
● Costal surfaces: anterior,
lateral, and posterior aspects of the
lung in contact with the costal
elements of the internal thoracic
cage
medial or
mediastinal
(concave)
◦ The mediastinal surface lies
against the mediastinum
◦ have 3 borders
anterior
posterior
(rounded)
inferior
● Apex: superior part of the upper lobe that extends into the root of the neck
(above the clavicles)
● Diaphragmatic (base):
inferior part of the lung in
contact with the underlying
diaphragm
base
Fissures
upper
middle
lower
upper
lower
• Oblique
• horizontal
Hilum ( root of lung)
● Hilum: Area located on the medial aspect through which structures
enter and leave the lung
Mediastinal surfaces & relations
Groove for
subclavian artery
Groove for
brachiocephalic
vein
Area for
trachea
Area for
esophagus
Groove for
azygus vein
Groove for
esophagus
Groove for
inferior vena
cava
Cardiac
impression
Area for thymus
Groove for superior
vena cava
RIGHT
LUNG
Area for
trachea and
esophagus
Cardiac
impression
Area for
thymus
Groove for
subclavian artery
Groove for
brachiocephalic vein
Groove for
esophagus
Groove for
descending
aorta
Groove for
arch of aorta
LEFT
LUNG
◦ THE RIGHT LUNG
◦ heavier than the left lung, but is
shorter and wider
◦ It has three lobes:
◦ Superior or upper
◦ Middle
◦ Inferior or lower
◦ It is divided into upper, middle, and
lower lobes by the oblique and
horizontal (accessory) fissures
◦ Has 3 lobar (secondary) bronchi and 10
segmental (tertiary) bronchi.
THE LEFT LUNG
◦ lighter than the right lung, but is taller and
narrow
◦ The left lung has two lobes
◦ Superior or upper
◦ Inferior or lower
◦ It is divided into upper and lower lobes by an
oblique fissure
◦ Has 2 lobar (secondary) bronchi and 8 to 10
segmental bronchi.
The anterior margin of the left lung has an
indentation-the cardiac notch, which often
creates a thin process in the upper lobe called
the lingula.
DIFFERENCE B/W RT. & LT. LUNG
Blood supply of the lungs
Arterial supply Venous
drainage
Bronchi, lung
tissue.
Bronchial arteries
from descending
aorta.
Bronchial veins
to the azygos
and hemiazygos
veins.
Alveoli. Pulmonary
arteries
Pulmonary
veins.
Nerve supply
of lungs
◦ Lymph from the
lungs drains to
◦
◦ Pulmonary lymph nodes
◦ Bronchopulmonary
lymph nodes
◦ Superior and inferior
tracheobronchial lymph
nodes
PLEURA
The pleura is a smooth shining serous membrane that covers the lungs.
Visceral
pleura
Parietal
pleura
Visceral pleura
• Covers the lungs
• Including fissures
• Insensitive to pain
Parietal pleura
• Costal
• Diaphragm
• Mediastinal
• Cervical (pleural cupula,
Sibson fascia)
• Pulmonary ligament
PLEURAL RECESSES
• Costomediastinal &
• costodiaphragmatic
Costomediastinal
recess
Lungs and Pleura.pptx
Lungs and Pleura.pptx

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Lungs and Pleura.pptx

  • 2. • Introduction • Shape • Surfaces • Borders • Fissures • Root or hilum • Mediastinal surface • Nerve supply • Blood supply
  • 3. The lungs are the vital organs of respiration. Their main function is to oxygenate the blood by bringing inspired air into close relation with the venous blood in the pulmonary capillaries. During life the lungs are soft, elastic and spongy.
  • 4.
  • 5.
  • 6. The shape of each lung is conical with a rounded apex and a broad base
  • 7. Lungs ◦ have 2 surfaces costal (convex). ● Costal surfaces: anterior, lateral, and posterior aspects of the lung in contact with the costal elements of the internal thoracic cage
  • 8. medial or mediastinal (concave) ◦ The mediastinal surface lies against the mediastinum
  • 9. ◦ have 3 borders anterior posterior (rounded) inferior
  • 10. ● Apex: superior part of the upper lobe that extends into the root of the neck (above the clavicles)
  • 11.
  • 12. ● Diaphragmatic (base): inferior part of the lung in contact with the underlying diaphragm base
  • 14. Hilum ( root of lung) ● Hilum: Area located on the medial aspect through which structures enter and leave the lung
  • 15.
  • 16.
  • 18. Groove for subclavian artery Groove for brachiocephalic vein Area for trachea Area for esophagus Groove for azygus vein Groove for esophagus Groove for inferior vena cava Cardiac impression Area for thymus Groove for superior vena cava RIGHT LUNG
  • 19. Area for trachea and esophagus Cardiac impression Area for thymus Groove for subclavian artery Groove for brachiocephalic vein Groove for esophagus Groove for descending aorta Groove for arch of aorta LEFT LUNG
  • 20. ◦ THE RIGHT LUNG ◦ heavier than the left lung, but is shorter and wider ◦ It has three lobes: ◦ Superior or upper ◦ Middle ◦ Inferior or lower ◦ It is divided into upper, middle, and lower lobes by the oblique and horizontal (accessory) fissures ◦ Has 3 lobar (secondary) bronchi and 10 segmental (tertiary) bronchi. THE LEFT LUNG ◦ lighter than the right lung, but is taller and narrow ◦ The left lung has two lobes ◦ Superior or upper ◦ Inferior or lower ◦ It is divided into upper and lower lobes by an oblique fissure ◦ Has 2 lobar (secondary) bronchi and 8 to 10 segmental bronchi. The anterior margin of the left lung has an indentation-the cardiac notch, which often creates a thin process in the upper lobe called the lingula. DIFFERENCE B/W RT. & LT. LUNG
  • 21. Blood supply of the lungs Arterial supply Venous drainage Bronchi, lung tissue. Bronchial arteries from descending aorta. Bronchial veins to the azygos and hemiazygos veins. Alveoli. Pulmonary arteries Pulmonary veins.
  • 23. ◦ Lymph from the lungs drains to ◦ ◦ Pulmonary lymph nodes ◦ Bronchopulmonary lymph nodes ◦ Superior and inferior tracheobronchial lymph nodes
  • 25. The pleura is a smooth shining serous membrane that covers the lungs. Visceral pleura Parietal pleura
  • 26. Visceral pleura • Covers the lungs • Including fissures • Insensitive to pain
  • 27. Parietal pleura • Costal • Diaphragm • Mediastinal • Cervical (pleural cupula, Sibson fascia) • Pulmonary ligament
  • 28.
  • 29. PLEURAL RECESSES • Costomediastinal & • costodiaphragmatic