Normal structure and function of the Heart Flashcards
What is the Function of the Left heart
- Via the Aorta
- Drives the high pressure systemic circulation
What is the Function of the Right Heart
- Via the pulmonary Artery
- Drives the low pressure pulmonary circulation
- Blood to the lungs and back to the heat via pulmonary viens
What are the Features of arteries
- tunica Adventitia
- Tunica Media
- Tinica intima
What are the Features of Veins
- Thin
- low pressure system
- Larger ones contain valves for unidirectional flow
where does the lympathic system drain
right and left subclavian viens
Describe the position of the apex in relaxtion to the intercostal spaces and the midclavicular line
- Apex located in 5th intercostal space
- Medial to the midclavicular line
What is the coronary sulcus
- Groove on the external surface of the heart separating the atria from the ventricles
What is the atrio-ventricular sulcus
- seprarates right ventricle from right atrium
- where right coronary artery is located
What forms most of the anterior surface of the heart
Right ventricle
Intraventricular sulcus
- separates the 2 ventricles
- anterior intra-ventricular branch of the coronary artery is locatrf
what makes up most of the posterior surface of the heart
Left ventricle
Where do the left and right coronary arteries arise from
- Root of the Aorta just above th aortic vavle
- Lie within the coronary sulcus
How do the coronary artiers supply the heart
- their branches anastomose on the surface of the heart
- anastomose within the heart muscle
- providing collateral circulation
why is the left ventricle thicker than right
has to deal with a great pressure in the systemic circulation
What are semilunar vavles
located within the aorta and pulmonary trunk
- Aortic vavle
- Pulmonary vavle
Describe the structure of the semi-lunar valves
- 3 half-mood shaped pocket like cusps
