Thorax Flashcards
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A large ridge attached at its ends to the septal and anterior ventricular walls of the right ventricle. It also conveys within it the right branch of the AV bundle.
Moderate Band
Structure formed from the fused first ganglion of the sympathetic trunk with the inferior cervical ganglion
Stellate ganglion
Greater splanchnic nerve arises from
5th to 9th ganglia
Lesser splanchnic nerve arises from
10th and 11th ganglia
Drains lymph from the medial quadrant of breast, deep structures of anterior thoracic and abdominal walls, and upper surface of liver
Internal Thoracic Nodes
Drains lymph from the intercostal spaces and breast
Intercostal Nodes
Drains lymph from the thyroid and pericardium
Brachiocephalic Nodes
Drains lymph from the esophagus, pericardium, and diaphragmatic nodes
Posterior Mediastinal Nodes
Drains lymph from the lungs, trachea, and heart
Tracheobronchial Nodes
Three constrictions of the esophagus
- Where it begins,
- where it is crossed by the left main bronchus and aortic arch on anterior surface
- where it pierces the diaphragm
Arrangement of intercostal vessels and nerves below the ribs, in descending order
Vein
Artery
Nerve
Lower border of the lungs and pleura
Lungs Pleura
6th rib 8th midclavicular
8th rib 10th midaxillary
10th rib 12th side of vertebral column
Anterior and posterior border of pericardium
Anterior - 2nd to 6th costal cartilage
Posterior - 5th to 8th thoracic vertebrae
Part of pericardium attached to sternum, great blood vessels, and diaphragm
Fibrous pericardium
This is divided into parietal and visceral pericardium
Serous pericardium
Normal volume of pericardial fluid
50 mL
Nerve supply of the pericardium
Fibrous + Parietal Serous - phrenic nerve
Visceral Serous - Sympathetic trunk and vagus
Nerve supply of the diaphragm. Include roots please
Phrenic Nerve (C3-C5)
Blood supply of the thymus
Inferior thyroid artery
Internal throracic artery
Location of thymus in the mediastinum
Superior Mediastinum. Sometimes anterior
Contents of the posterior mediastinum
Esophagus, thoracic duct, sympathetic trunks
Small accessory muscles of inspiration found at the back of the chest wall
Levator Costarum
Differentiate the main bronchi (width, length, and verticalness)
Right is wider, shorter, and more vertical
Left is narrower, longer, and more horizontal
Which main bronchi gives off the superior lobar bronchus before entering the hilum?
Right
Which main bronchus passes below the arch of the aorta and in front of the esophagus?
Left
The central tendon of the diaphragm lies behind which structure?
Xiphisternal joint
The summit of the right and left domes of the diaphragm in midrespiratory position reach which structure?
Right - upper border of 5th rib
Left - lower border of 5th rib
Which recurrent laryngeal nerve enters the thorax?
Left
Landmark for doing pericardiocentesis, and why?
Left ofxiphoid process (Left subcostal angle)
Cardiac notch is here, so no pleura and lung
Branches of the right coronary artery and structures supplied
Right conus artery - anterior pulmonary conus, upper anterior wall of RV
Anterior Ventricular - as named
Marginal - anterior RV
Posterior Ventricular - diapraghmatic surface of RV
Posterior Descending (Interventricular) - RV, LV, posterior septum, AV Node
Atrial branches - RA, SA Node
Branches of the left coronary artery and structures supplied
Anterior Descending (interventricular) - RV, LV, anterior septum
Under this: Left diagonal (LV), left conus - pulmonary conus
Circumflex -
Under this: Marginal (Left margin of LV, Apex), Anterior Ventricular and Posterior Ventricular (LV), Atrial (LA)
Drains lymph from the lateral quadrant of the breast
Anterior axillary or pectoral nodes
