Mediastinum

Question 1

MEDIASTINUM DIVISIONS

Answer 1

❑Superior ❑Inferior ✓Anterior ✓Middle ✓Posterior

Question 2

SUPERIOR MEDIASTINUM
Boundaries
✓Ant. =———
✓Post. =———
✓Sup.= ———
✓Inf. =———
✓Sides= ———

Answer 2

SUPERIOR MEDIASTINUM
Boundaries
✓Ant. =Manubrium sterni
✓Post. =T1-T4
✓Sup.=Plane of thoracic inlet at T1
✓Inf. =imaginary line joining the sternum angle & lower border of T4
✓Sides=mediastinal pleura

Question 3

SUPERIOR MEDIASTINUM CONTENTS

Answer 3

Brachiocephalic vein
Arch of aorta and two of its branches
Thoracic duct
Superior vena cava
Thymus
Esophagus
Nerve: phrenic and vagus
Trachea

Question 4

POSTERIOR MEDIASTINUM
Boundaries
• Ant.- ———
• Post.- ———
• Sup.- ———
• Inf.- ———
• On each side: ——

Answer 4

POSTERIOR MEDIASTINUM
Boundaries
• Ant.-Pericardium& diaphragm
• Post.-Lower8thoracic vertebrae
• Sup.-Horizontalplane
• Inf.- Diaphragm
• On each side: Pleura

Question 5

POSTERIOR MEDIASTINUM
CONTENTS

Answer 5

Vagus ( left and rise)

Azygos & hemiazygos veins

Lymph nodes

sympathetic trunks & their branches (splanchnic nerves) ( left and right)

Descending aorta

A

Thoracic duct

Esophagus

Question 6

MIDDLE MEDIASTINUM content

Answer 6

Pericardium and heart
Lymph nodes
Arteries: pulmonary trunk, ascending aorta
Nerve: phrenic
Veins: lower half of superior vena cabanas pulmonary veins

Question 7

Arteries of the mediastinum

Answer 7

Arteries
❑Arch of aorta
✓R. & L. subclavian. A ✓Right & left carotid A.
❑Pulmonary Trunk
R. & L. pulmonary trunk

Question 8

Veins of the mediastinum

Answer 8

VEINS
❑Brachiocephalic vein ❑Sup.& Inf. Vena cava ❑Azygos vein
❑Hemi azygos vein ❑Hemi Accessory azygos
vein

Question 9

Nerves of the mediastinum

Answer 9

Nerves
❑Phrenic nerve
❑ Vagus nerve ❑Sympathetic
trunk
❑Splanchnic Nerve

Question 10

Lymphatics in mediastinum

Answer 10

Lymphatics
❑Thoracic ducts
❑Lymph nodes

Question 11

Visceral structures in mediastinum

Answer 11

Visceral structures
❑Esophagus
❑Trachea
❑Heart & pericardium