L1 - Anatomy Of The Heart Flashcards
Use lecture slides for most of this. Practise labelling on netanatomy
Yes
Going from right to left name the 3 major branches of the aorta
Brachiocephalic trunk
Left common carotid artery
Left subclavian artery
Know the highlighted arteries on the slide. I.e. the major arteries of the body
Look
What is the function of the tricuspid valve
To stop backflow of blood into the right atria during ventricular contraction
Why must each successive chamber/vessel in the heart have a lower diastolic pressure then the previous chamber/vessels systolic?
To allow blood to flow down its pressure gradient
What is occurring at the dicrotic notch?
A transient increase in atrial pressure to a slight backflow of blood when the aortic valve closed
What is the normal cardiac output for an average 70kg male at rest?
5L/min
Where are the pectinate muscles found which are involved in increasing the force of their areas contraction?
Left and right auricles and right atrial wall
Where are trabecular carnae found?
Inside the walls of the ventricles
What is the function of the papillary muscles?
When they contract they pull on the chordae tendinae preventing inversion of the valves and subsequent backflow of blood
The three layers of the heart are the epicardium, myocardium and endocardium, what are they surrounded by?
A pericardial sac
What is the function of the pericardium?
To provide lubrication for the heart and protection from infection
What is the most common cause of heart failure?
Previous MI causing scarring and thus loss of heart muscle contractility
The semilunar valves are the pulmonary and aortic whilst the av valves are the mitral and tricuspid valves. Which are tricuspid in form (three leaflets)
All but the mitral
What is heart dominance determined by?
Where the posterior descending artery comes from
