Heart Flashcards
What are the function of the Papillary muscle and chordate tendinae?
They prevent the cusps of the AV valves from swinging
into the atria when the ventricles contract
The function of tricuspid valves:
prevents blood movement from right ventricle to right atrium
What is the membrane around the heart called?
Pericardial sac
The function of mitral valves:
It prevents blood movement from left ventricle to the left atrium.
What is the function of the Coronary sinus?
drains blood from the myocardium into the right atrium
What is the Endocardium?
The inner lining of heart chamber
What is the Myocardium?
The layer largely composed of cardiac muscle tissue
What is the space containing serous fluid to reduce friction during heartbeats?
Pericardium
What is the function of the cardiac vein?
It drains blood from myocardial capillaries
What is the function of the coronary artery?
It supplies blood to heart muscle
What is the function of the aorta?
It distributes blood to body organs (systemic circuit) except lungs
What is achieved by the thicker wall in the left ventricle?
It allows it to contract with greater force and create the high
the pressure needed to move the blood to all parts of the body (systemic circuit) except the lungs
What is presented by the P wave?
It corresponds to depolarization of the muscle fibers of the atria.
What is presented by the QRS complex and the T wave?
QRS complex: It corresponds to the depolarization of the muscle fibers of the ventricles.
T wave: Repolarization of the ventricles
How is the cardiovascular risk assessed?
Through blood tests -> Lipid profile -> medical screening tool for
abnormalities in lipids; it includes cholesterol and triglycerides.
