The Heart Flashcards
Where is the right margin of the heart located?
Lateral to sternal edge
Where is the apex of the heart located?
5th intercostal space, medial to mid-clavicular line
Where is the arch of aorta located?
Level of sternal angle (manubrio-sternal joint), where the 2nd rib forms a joint
What is the right margin of the heart mainly formed by? (ant. view of heart)
right atrium
What is the left margin of the heart formed by?
Auricular appendage of left atrium but mainly left ventricle
The inferior border of the heart is formed by the r____ v_____ & apex of l____ v____
right ventricle
left ventricle
What forms the bulk of the anterior surface of the heart?
right ventricle
What separates the right atrium from the right ventricle?
vertical atrioventricular groove
What separates the left ventricle from the right ventricle?
Anterior inter-ventricular groove
What veins does the right atrium receive?
superior vena cava in upper part
inferior vena cava & coronary sinus in lower part
What’s the name given to the distinct muscular ridge running downwards between the venae cavae?
crista terminalis
What type of valves guard the openings of the inferior vena cava & coronary sinus?
rudimentary valves
What valve joins the right atrium to the right ventricle?
tricuspid valve
What valve joins the pulmonary trunk and the right ventricle?
pulmonary valve
A muscular ridge the i________ c_____ between the atrioventricular & pulmonary orificaes separates inflow & outflow tracts of the ventricle
infundibulventricular crest
The inner aspect of the inflow tract path is marked by what irregular muscular elevations?
Trabecular carneae
What structure allows for the attachment of the cusps of the tricuspid valve and papillary muscle?
chordae tendinae
What valve connects the left atrium to the left ventricle?
mitral valve
The aortic orificae is guarded by ____ semilunar cusps of the ____ valve
3
aortic
What arteries lie at the level of t5?
Right & left pulmonary arteries
What arteries supply the heart?
left and right coronary arteries
Where do the coronary arteries’ main branches lie?
inter ventricular & atrioventricular grooves
Where do the coronary arteries arise from? (a____ s___)
Aortic sinuses
How many aortic sinuses are there? Name these
Left, right & posterior sinuses
Which sinus gives rise to the left coronary artery?
left sinus
Which sinus gives rise to the right coronary artery?
right sinus
What happens at systole?
blood is ejected from left ventricle to rest of body
What happens during diastole?
coronary sinuses fill with blood
At what stage (diastole/systole) does the aortic valve close?
diastole
Where does the right coronary artery anastomose with the left coronary artery?
posterior inter-ventricular groove
Whats the most important branch of the left coronary artery?
anterior interventricular artery (left anterior descending artery)
What does the anterior inter-ventricular artery supply?
the anterior aspect of both ventricles
What are 2 common coronary artery diseases?
Angina pectoris
myocardial infarction
What do the cardiac veins follow the course of?
Coronary arteries
Where is the coronary sinus located?
Posterior part of atrioventricular groove
Name the 3 cardiac veins
Great, middle & small cardiac veins
Which chamber of the heart does the coronary sinus drain into?
right atrium
