tough, protective sac= dense CT. Attached to the central portion of the diaphragm, the posterior of the sternum, the vertebral columns, and the large blood vessels emerging from the heart.
inner layer of serous membrane that covers the heart.
between the parietal and visceral layers. contains a small volume of serous fluid that the pericardial membranes secrete. this fluid reduces friction between the pericardial membranes as the heart moves within.
delivers oxygen to all body cells and carries away wastes
eliminates carbon dioxide via the lungs and oxygenates the blood.
superior vena cava
right pulmonary artery
3 lobar branches
left pulmonary artery
2 lobar branches
left pulmonary veins
goes to left atrium
bicuspid (mitral) valve
inferior vena cava
goes to right atrium
this drains into right atrium
blood flow from superior vena cava?
the blood flows from superior parts of the body and then into the right atrium
blood flow from inferior vena cava?
the blood flows from inferior parts of the body and then into the right atrium
blood flow from the coronary sinus?
a smaller vein that drains blood into the right atrium from the myocardium of the heart itself
the atrium of each side communicates with its corresponding ventricle through this opening.
description of blood flow through right atrium of heart
right atrium +tricuspid valve= right ventricle + pulmonary semilunar valve (3 cusps)= pulmonary trunk
description of blood flow through pulmonary trunk of right side of heart
pulmonary trunk= right pulmonary artery (3 lobar branches)= right lung= 2 right pulmonary veins = left atrium
description of blood flow through pulmonary trunk of left side of heart
pulmonary trunk= left pulmonary artery (2 lobar branches)= left lung= 2 right pulmonary veins = left atrium
description of blood flow from left atrium
left atrium + bicuspid (mitral) valve= left ventricle+ aortic semilunar valve= aorta= rest of body