Upgrade to remove ads
Only $2.99/month

Lecture 19: Middle Mediastinum

Terms in this set (56)

pericarditis
inflammation of the pericardial sac
outer (fibrous) layer and inner (serous) layer
pericardial sac consists of 2 layers
inner serous layer
This part of the pericardium folds on itself and forms an outer parietal layer and inner visceral layer
heart
inner visceral layers fuses with the ___
fibrous pericardium
the outer parietal layer fused with ___
pericardial space
the space between the parietal and visceral layers of the pericardium
small amounts
Pericardial space contains (large or small) amounts of serous fluid
tampondae
accumulation of fluid in the pericardial cavity
transverse and oblique sinus
2 pericardial sinuses that lie within the pericardial sac
transverse sinus
connects the right and left sides of the cavity; it spearates the outflow tracts (Aorta and pulmonary trunk) from the inflow tract (SVC)
oblique sinus
inverted U-shaped sinus dorsal to the left atrium between the pulmonary veins and SVC
anterior
right ventricle is positioned (anterior or posterior)
posterior
left ventricle is positioned (anterior or posterior)
atrioventricular groove
separates the atria and ventricles
right aortic sinus
right coronary artery originates in the ____
right atrium, right ventricle and SA (sinoatrial) node
What does the right coronary artery supply?
posterior interventricular artery
terminal branch of the right coronary artery
left ventricle, small part of right ventricle, ventricular septum, and part of left atrium
4 things that the left coronary artery supplies
aorta
left coronary artery arises from ____ and passes to the left posterior to the pulmonary trunk
circumflex and left anterior interventricular artery
left coronary artery divides into what 2 arteries in the coronary sulcus
left marginal artery
The circumflex artery gives rise to the _____
left coronary artery
the interventricular septum is supplied principally by branches of the ____
Right atrium and SA node
nodal branch of right coronary artery supplies (2)
Right marginal artery
anterior wall of right ventricle is supplied by what branch of the right coronary artery
Posterior interventricular artery
Posterior wall of right ventricle and posterior part of septum is supplied by what branch of the right coronary artery
anterior interventricular artery
Anterior wall of left ventricle and most of the ventricular septum and apex is supplied by what branch of the left coronary artery
left marginal artery
lateral wall of left ventricle is supplied by what branch of left coronary artery
circumflex artery
posterior wall of left atrium and left ventricle is supplied by what branch of the left coronary artery
right dominance
posterior interventricalar artery is derived from the right coronary artery and the right coronary crosses to the left side to supply the left ventricular wall and ventricular septum
left dominance
posterior interventricular artery is derided from the left coronary artery and the left coronary artery sends branches posteriorly to the right ventricular wall
great cardiac vein
drains blood from both the ventricles and left atrium
posterior ventricular sinus
middle cardiac vein drains what?
anterior cardiac vein
drains the upper surface of the right ventricle
Right atrium
SA node is found in which chamber of the heart
right atrium
fossa ovalis is located on the septal wall of ___
chordae tendineae
connective tissue that is attached to the periphery of each leaflet
left ventricle
which ventricle has the thicket wall?
right ventricle
which chamber of the heart contains the right bundle branch
pulmonary artery and aorta
ligamentum arteriosum lies between
right ventricle
ligamentum arteriosum is in what chamber of the heart
bicuspid valve
what valve separates the left atrium and left ventricle
tricuspid valve
what valve separates the right atrium and right ventricle
right second intercostal space
where can you hear the aortic valve
left second intercostal space
where can you hear the pulmonic valve
left fifth intercostal space at the midclavicular line
where can you hear the mitral valve
left of the xiphosternal junctuon
where can you hear the tricuspid valve
diastole
closure of the aortic and pulmonic valves (diastole or systole starts)
diastole
ventricular filling
systole
ventricular emptying
lub
(lub or dub) is caused by the vibration of blood in the ventricular chambers as systole begins and the AV valves close
dub
(lub or dub) is caused by closure of the aortic and pulmonary valves at the end of systole
SA node
normally called the pacemaker
AV node
stimulated by depolarizations traveling from the SA node
Bundles of his
exits the AV node and travels in the interventricular septum where it divides into right and left bundle branches
T1-T6
Sympathetic preganglionic cells are located in spinal cord segments ____
Vagus nerve (CN X)
Parasympathetic innervation is
YOU MIGHT ALSO LIKE...