The Heart Flashcards
Location of heart
Mediastinum cavity (pericardial cavity)
Pulmonary circuit
O2 in, CO2 out
Systemic circuit
O2 out, CO2 in
Right atrium
Receives deoxygenated blood
Travel to it by superior vena cava, inferior vena cava, coronary sinus
Then to right ventricle through tricuspid valve
Fossa ovalis
Once foremen ovale
Depression that fused to be a hole
Pectinate muscle
Ridges
Interatrial septum
Divider between atria
Atrioventricular valve
Tricuspid valve
Right ventricle
Arrival through tricuspid valve
To pulmonary trunk
Pulmonary truck (circuit)
R and L pulmonary arteries
Lungs (arterioles, capillaries, venules)
R and L pulmonary veins
Arrival back at heart : left atrium
Left atrium (difference between right atrium)
Blood has more O2
No coronary sinus
Bicuspid valve or mitral valve
Next stop left ventricle
Left ventricle (what’s different from R)
Muscle wall is thicker
Aortic semilunar valve
Next stop aorta (systemic circuit)
Aorta
Ascending, arch, descending, thoracic aorta, abdominal aorta
Branches of aorta
R & L coronary artery
Left subclavian
Brachioceohalic: goes to brachium and head
Left common carotid: blood to head
Ligamentum arteriosum:old branch, between pulmonary trunk and aortic arch
Where is the surface of the heart?
Between pulmonary trunk and aortic arch
Base and apex
Base is wide part of heart where vessels are
Sternocostal surface
Anterior side of heart
