Heart Anatomy
Name 2 main chambers of the heart
Atria and ventricles
What sound occurs with the closing of AV valves?
Lubb
Name 3 types of blood vessels
Arteries, Veins, and capillaries
Which wave in ECG represents the atrial depolarization?
P wave
What is the name of the structure that generates the action potential for a heart beat?
SA node
Which valve is found between atrium and ventricle
Atrioventricular valve
What valve is closed at ventricular systole
AV valve.
What is the neural regulator for the BP?
Cardiovascular Center/ Vasomotor Center
Why we cannot see the Atrial repolarization on the QRS wave?
Due to the net of atrial repolarization and ventricular depolarization is greater.
What structure in the cardiac myocyte lets the heart to contract as a functional syncytium?
Intercalated Discs.
What transports the blood from right ventricle to the lungs
Pulmonary artery
Where is the pressure higher when the SL valves are open?
Ventricles.
Name three layers of blood vessel
Tunica Interna, Tunica Media, and Tunica Externa
What represents the T wave?
Ventricular repolarization
What structure in ventricles is associated with initiation of ventricular systole?
AV node
Location of Heart
Mediastinum
What is called when both the chambers are in diastole?
Quiescent Period
ANP and Histamine
Bundle Branch Block.
Because thin fibers slow the impulse but thick fibers move the impulse faster.
Wall of heart from outside to inside
Fibrous Pericardium, Parietal pericardium, Visceral Pericardium (epicardium), myocardium, endocardium
When does AV valve remain open?
During atrial systole and Total diastole
Name three types of capillaries
Continuous, Fenestrated, and Sinusoid
A patient has a lot of P waves, Can you determine the disease?
Atrial fibrillation
How is the action potential is transmitted by the SA node to the Purkinje fibers?
SA node, Junction Fibers, AV node, Bundle branches, Purkinje Fibers.