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ð¹Ø§ÙÙ ÙØ§Ø¶Ùع اÙÙ ÙÙ Ø© ÙÙ Thorax Ø Upper Ù lower
ð¹ Ù ÙØ®Øµ Lymph drainage
ð¹ Ù ÙØ®Øµ Oesophagus
ð¹ Ù ÙØ®Øµ Trachea
ð¹ Ù ÙØ®Øµ Phrenic nerve
ð¹ Ù ÙØ®Øµ Large Vessels of the Thorax
Upper Limb
ð¹ Ù ÙØ®Øµ UPPER LIMB APPLIED ANATOMY
ð¹Ù ÙØ®Øµ Brachial plexus
ð¹ Ù ÙØ®Øµ Hip bone
ð¹ Ù ÙØ®Øµ Cubital fossa
ð¹Ù ÙØ®Øµ Breast
ð¹ Ù ÙØ®Øµ Humerus bone
ð¹ Ù ÙØ®Øµ Joint of upper limb
Lower Limb
ð¹ Ù ÙØ®Øµ Femoral triangle
ð¹ Ù ÙØ®Øµ Popliteal fossa
ð¹ Ù ÙØ®Øµ Femoral sheath and femoral canal
ð¹ Ù ÙØ®Øµ Joint of lower limb
âŠâŠâŠØªØ¬Ù ÙØ¹Ø§Øª Ø§Ø³ØŠÙØ© âŠâŠâŠ
ð»ðð ððâð ðððð ððð ðð ð ðððððð ð ððððð ð©º
â
Phrenic Nerve â
ð Origin
â
Arises from the cervical plexus:
C3 â C4 â C5
â
Main contribution: C4
Type
Mixed nerve, but functionally mainly:
ð¢ Motor: Diaphragm
ðµ Sensory:
ð¹Pericardium
ð¹Parietal pleura
(mediastinal + diaphragmatic parts)
Course in the Neck
Enters thorax:
â
Behind the beginning of the brachiocephalic vein
â
In front of the subclavian artery
â
Separated from vagus nerve by:
Thyrocervical trunk
â
Descends anterior to:
â°Apex of lung
â°Cervical pleura
â°Suprapleural membrane
ð« Course in the Thorax
â
Accompanies:
Pericardiophrenic vessels
â
Passes through:
Superior mediastinum â Middle mediastinum
â¡ïž Lateral Relations
Related to:
â°Pleura
â°Lung (on both sides)
ðŽ Right vs Left Phrenic Nerve
ð Right Phrenic Nerve
ð¹Runs on the venous side of mediastinum:
â°Right brachiocephalic vein
â°Superior vena cava
â°Right atrium
ðžContinues with:
Inferior vena cava
ðžPasses through:
Vena caval opening of the diaphragm
ðµ Left Phrenic Nerve
ð¹Runs on the arterial side of mediastinum:
ð¹Groove between:
â°Left common carotid artery
â°Left subclavian artery
ð¹Crosses vagus nerve (posterior â anterior) above aortic arch
ð¹Related to:
â°Aortic arch
â°Pericardium covering left ventricle
â°Pierces diaphragm through a separate opening
Important Exam Note
Right phrenic nerve is shorter than left because:
1. Right hemidiaphragm is higher (due to liver)
2. Right phrenic runs more vertically
3. Left phrenic curves around the heart
Quick Revision
â°C3âC5 = phrenic nerve
â°Motor = diaphragm
â°Sensory = pericardium + pleura
â°Right = venous side
â°Left = arterial side
â°Right shorter (liver)ع ÙÙÙØªÙÙ
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