Thorax: Right and left chambers of the heart Flashcards
Structure that separates the chambers of the heart?
Septa
Three types of septa and what they separate?
Interatrial: separates atria.
Interventricular: separates ventricles.
Atrioventricular: separates the atria from the ventricles.
Structures that the right atrium receives blood from?
-SVC, IVC, Coronary sinus opening, smallest cardiac veins and anterior cardiac veins.
Opening that allows for the flow of blood from the right atrium to the right ventricles.
Right atrioventricular orifice.
Valves found between the right atrium and ventricle?
Tricuspid valve
Structures that marks the division of the spaces of the right atrium? (2)
-Sulcus terminalis (externally)
-Crista terminalis (internally)
A depression in the right atrium that is a remnant of foramen ovale?
Fossa ovalis
Another name for infundibulum?
Conus arteriosus
Numerous, irregular muscular structures found in the walls of the right ventricle?
Trabeculae carneae
Tendon-like fibrous cords connected to free edges of cusps of tricuspid valve?
Chordae tendineae
Muscles attached to the chordae tendineae?
Papillary muscles
Three types of papillary muscles found in the right ventricle?
Anterior, posterior and septal papillary muscles.
A bridge between the lower portion of interventricular septum and the
base of anterior papillary muscle?
Septomarginal trabeculum
Three cusps of the right atrioventricular valve (tricuspid) ?
Anterior, posterior and septal cusps.
Three types of pulmonary cusps?
Left, anterior, and right pulmonary cusps.
The superior edge of:
A. Anterior pulmonary cusp
B. Right pulmonary cusp
A. Nodule
B. Lunule
Space found in the pulmonary cusps?
Pulmonary sinus
Opening that allows for the flow of blood from the left atrium to the left ventricles.
Left atrioventricular orifice
How many papillary muscles do we have in the left ventricle?
Two, anterior and posterior.
Outflow tract in the left ventricle?
Aortic vestibule
Two parts of the interventricular septum of the left ventricle?
-Muscular part: Thick, lower part.
-Membranous part: thin, upper part.
Three semilunar cusps of the aortic valve
Left, right and posterior cusps.
The superior edges of the:
A. Posterior cusp
B. Left cusp
A. Lunule
B. Nodule
Three sinuses of the aortic valves
Left, right and posterior aortic sinus.