18 Questions
Which chambers of the heart are referred to as the 'Receiving Chambers'?
Atria
What is the function of the semilunar valves in the heart?
Prevent backflow of blood from arteries into ventricles
Which chamber forms the right border of the heart?
Right Atrium
Where are pectinate muscles mainly confined in the heart?
Auricle of the left atrium
Which structure separates the two ventricles of the heart?
Interventricular Septum
What causes the roughness of the anterior and posterior walls of the atria?
Presence of pectinate muscle
Where is the sinoatrial (SA) node located?
Right Atrium; Medial to opening of superior vena cava (SVC)
What is the function of the atrioventricular (AV) node?
Ensures ventricles receive signal to contract after atria have contracted
What is the role of the AV bundle in the heart's conduction system?
Connects the atria to the ventricles
Where do the R and L Bundle Branches extend to?
Apices of right and left ventricles
Which heart component surrounds the 2 ventricles and acts as the largest pacemaker of the heart?
Purkinje Fibers
What is the main function of the Purkinje fibers in the heart?
Conducting action potentials to ventricular muscle cells
What is the purpose of the atrioventricular valves in the heart?
Prevent backflow of blood into the atria during ventricular contraction
Which part of the heart contains trabeculae carnae connected to papillary muscles by chordae tendineae?
Left ventricle
Where does blood pass from the left ventricle after leaving through a valve?
Ascending aorta
Which structure connects the arch of the aorta to the pulmonary trunk after birth?
Ligamentum arteriosum
What connects the cusps of the tricuspid valve to papillary muscles?
Chordae tendineae
Which heart chamber also contains trabeculae carnae and chordae tendineae?
Right ventricle
Test your knowledge on the anatomy of the atria in the heart. Questions cover the superior 'Receiving Chambers', pectinate muscle, interatrial septum, fossa ovalis, and the structures that drain blood into the right atrium.
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