Exam 2 Mediastinum and Heart Flashcards
(30 cards)
Space between pleural sacs
Mediastinum
Divisions of the mediastinum
Superior
Inferior
-Anterior
-Middle
-Posterior
Contents of the superior mediastinum
Trachea and esophagus
Thymus gland
L common carotid a
Subclavian a
Brachiocephalic trunk
Aortic arch
Brachiocephalic veins
Superior vena cava
Vagus nerves
Recurrent laryngeal n
Cardiac n
Phrenic n
Pericadiacophrenic a and v
Inferior mediastinum anterior division contents
Internal thoracic a and v
Tymus gland
Inferior mediastinum posterior division contents
-Esophagus
-Thoracic aorta and branches
-Azygos vein
-Hemiazygos and accessory hemiazygous veins
-Thoracic duct
-Vagus nerve
Branches of the thoracic aorta supply structures of what
the thorax
(ex. R bronchial a, esophageal a, posterior intercostal a)
Drains to venous angle, between the left subclavian and left internal jugular vein
Thoracic duct
If ETT extends too far past the carina, which bronchus is it most likely to enter
Right because it moves in a more vertical path (heart is in the way of Left)
What are the 3 parts of the esophagus
Cervical (C6-T1)
Thoracic (t1-esophageal hiatus)
Abdominal (diaphragm to cardiac orifice)
Where can the esophagus be constricted
Between the bronchus and arota and between the diaphragm
Sacs that develop in the weak spots of the mucosal lining of the esophagus
and what is the most common
Diverticula
Zenker’s diverticulum
innervation of esophagus
Sympathetic trunk and anterior vagal trunk come together to make esophageal plexus
A serous membrane of the heart
Pericadium
What are the 3 layers of the paricardium
Fibrous (not serous)
Parietal
Visceral
What provides neurovasculature to the pericardium
Phrenic nerve
Pericardiacophrenic a and v
Passage within pericardial cavity
Runs between the great vessels
Forms during development
Transvers pericardial sinus
What is the important landmark for cardiac surgery
Transverse pericardial sinus
Posterior aspect of pericardial cavity
Runs between pulmonary veins, IVC and esophagus
Oblique pericardial sinus
What innervates the heart
Cardiac plexus
Contents of the R atrium of the heart
Fossa ovalis
IVC and SVC
Right auricle
Pectinate muscles
Crista terminalis
Tricuspid valve
Interatrial septum
Contents of the R atrium of the heart
-Pulmonary semilunar valve
-Tricuspid valve
-Papillary muscle
-Cordae tenineae
-Trabeculae carneae
-Moderator band
-Conus arteriosus
-Interventriculr septum
Contents of the L atrium of the heart
Bicuspid valve
Fossa ovalis
Pectinate muscles
Left auricle
Opening to pulmonary veins
Contents of the L ventricle of the heart
Aortic semilunar valve
Bicuspid valve
Papillary muscles
Cordae tenineae
Trabeculae carneae
How is fetal blood flow different
It bypasses the R ventricle by passing through the oval foramen
