Thorax 2 Heart, Pericardium
Posterior to the body of the sternum & 2nd -6th costal cartilages
Anterior to the 4th- 6th thoracic vertebrae
Located in the middle of the mediastinum
All of the above
Prevents excessive dilation of the heart in cases of acute volume overload
It serve as a lubricated container in which the different parts of the heart
Protects it from infections coming from other organs (such as lungs)
All of the above
True
False
Hollow muscular organ
Pyramid shaped
Located inferiorly to the diaphragm
Located approximately between the 5th and 6th rib
Sternocostal
Apex
Diaphragmatic
Base
Directed downward, forward, and to the right
Formed by the Right ventricle
Lies at Level of the 6th intercostal spaces
Lies opposite to the base
It has 3 opening
Consist of a main cavity & and a small outpouching auricle
It is the First chamber where the deoxygenated blood flows from the organs
All of the above
True
False
Consists of a main cavity and a left auricle
Situated anteriorly behind the right atrium
It is separated from the esophagus by the Serous pericardium
The interior of the left atrium is rough
It has a circular cross section
It has the thickest wall among the chambers
Communicates with the Left atrium through the atrioventricular orifice
Its Trabeculae Carnae is not well developed
Consists of 3 cups
Guards the atrioventricular orifice
It has a similar structure to the pulmonary valve
It acts as a gate between the aorta and left venticle
Thin
Thick
Membranous
Attached to the fibrous skeleton
It forms the basis of electrical discontinuity between the atria and the ventricles
It only surrounds the atrioventricular and aortic orifices
Prevents the valve from stretching
Consist of Fibrous rings
Sinuatrial node
Sinuatrial bundle
Atrioventricular node
Atrioventricular bundle
True
False
True
False
True
False
Arises from the anterior aortic sinus of the descending aorta
Descend almost vertically in the right atrioventricular bundle
Runs Forward between the pulmonary trunk and the left auricle
It branches supply the right atrium and right ventricles only
True
False
The Left Coronary Artery larger than the Right Coronart Artery
The Coronary Sinus lies posteriorly of the atrioventricular bundle
The Coronary Sinus is one of the opening of the right ventricle
The Mitral Valve lies behind the left half of the sternum: opposite the 4th costal cartilage
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