Heart Anatomy
Pulmonary
lungs
sac of fluid surrounding heart, Formed from two layers
1. parietal layer
2. visceral layer.
Serous Pericardium.
receives blood from right atrium through tricuspid valve.
pumps blood into pulmonary circuit via pulmonary trunk.
Right Ventricle
tissue is in the myocardial layer
Circular shape
squeezes blood
Spiral
pumps blood against gravity
Cardiac muscle tissue.
Whole body
RV>O2 poor
Lungs>O2 rich
LV>whole body.
Systemic circuit
Inner layer of heart.
restson layer of connective tissue
Endocardium
makes up hearts posterior surface
receives oxygen rich blood from lungs through pulmonary veins.
opens into the left ventricle via bicupsid valve
Left Atrium.
blood supply to the heart itself.
delivers when heart is relaxed.
left ventricles receives most of blood supply
Coronary circulation.
Where is the heart located?
In the thoracic region, protected by the ribs.
cardiac muscle
arranged in circular and spiral pattersn
Myocardium
forms apex of heart
pumps blood through systemic circuit via aortic valve.
Left Ventricle.
arise from the aorta
located in coronary sulcus
Coronary arteries.
Membrane surround the hear for protection
Pericardium.
Visceral layer of serous pericardium
Epicardium.
Between atria and ventricles
AV Valves
coronary sinus
posterior cardiac vein
great cardiac vein
middle cardiac vein
small cardiac vein
Cardiac veins
strong layer of dense conncetive tissue.
Fibrous Pericardium
forms right border of heart.
receives blood from systemic circuit
right atrium.
at junction of ventricles and great arteries.
Semilunar valves. (aortic/pulmonary valves.)