Study Boxes Interior of Heart & Posterior Mediastinum Flashcards
Function of cordae tendinae
prevent back flow into atrium by preventing eversion of valves during ventricular contraction
attach to papillary muscles on cusps of AV valves
the pectinate muscle is found ONLY where
in RA and R and L auricles only
ligamentum arteriosus attaches what
pulmonary trunk to aortic arch
at angle of louis what happens to pulmonary artery?
• Left pulmonary artery arches over the left main bronchus
Anatomical location for all valves**
o Tricuspid- ICS 4
o Aortic- ICS 3
o Bicuspid Costal cartilage 4
o Pulmonary Costal cartilage 3
Points of auscultation for all valves
All physicians eagerly take money o Aortic R 2 ICS o Pulmonic L 2 ICS o Erbs ( 2nd pulmonic) – L 3 ICS o Tricuspid L 4 ICS o Mitral L 5 ICS
SA node and AV node blood supply**
by branch of R coronary artery
Location of SA node
superior to crista terminalis and junction of SVC and right urile
location of AV node
in the interatrial septum on the ventricular orifice of the coronary sinus
Bundle of His blood supply **
LAD
innervation of heart is by?
Cardiac plexus -
vagus CN X
sympathetic trunks T1-T5
Location of cardiac plexus
ANTERIOR to bifurcation of trachea
POSTERIOR to aortic arch
SUPERIOR to bifurcation of pulmonary trunk
where does the esophagus lie
BEHIND trachea and BEHIND left atrium
the esophagus has a relationship to what
base of the heart ( LA)
location of esophagus
deviates to LEFT posterior to left main bronchus
enters diaphragm at T10 anterior to aorta with vagus and esophageal branch of L gastric artery and vein
