Sheep heart Flashcards
in situ the sheep heart is enclosed with
fibroserous pericardial sac
what is the base of the heart
wide upper or anterior end of the heart
what is the apex of the heart
blunt tip of heart composed entirely of left ventricle
what are the appendages of the atria
auricles
what does the pulmonary trunk divide into
the left and right pulmonary arteries
what do the pulmonary arteries do
carry unoxygenated blood to lungs
what is the function of the aorta
carries oxygenated blood from left ventricle to be distributed throughout the whole body
what is the ligamentum arteriosum
degenerated embryonic ductus arteriosus
what is the brachiocephalic artery
divides and extends to be right subclavian and other extends to be right common carotid
what is the interventricular sulcus
longitudinal groove from lower left heart to upper right heart
what is the function of the superior vena cava
drains venous blood to the right atrium from most trunk and lower limbs
what is the function of the pulmonary veins
carry oxygenated blood from lungs back to the heart opening into left atrium
where is the aorta located
next to the brachiocephalic artery
what is the function of the pulmonary arteries
carry venous blood from right ventricle to the lungs so it can be oxygenated
what are the two parts of the right atrium
venous sinus and right auricle
what are the muscle ridges in the right auricle of the right atrium
musculi pectinati
what 5 orifices communicate with the right atrium
opening of superior vena cava, opening of inferior vena cava, atrioventricular opening, coronary sinus opening, opening of small cardiac veins
what is the function of the coronary sinus
cardiac veins drain blood from myocardium into here.
what is the function of the pulmonary semilunar valve
controls blood flow through circular orifice at base of pulmonary trunk
where is the fossa ovalis found
right side of the ineratrial septum (fetal scar)
what are the chordae tendineae
produce tension on valve flaps to prevent blood flowing in wrong direction
what are trabeculae carneae
lattice like arrangement of muscle tissue on inner wall of ventricle
what is the aortic semilunar valve
prevent blood from flowing up into left ventricle
what is the bicuspid valve
two flaps and acts the same way left and right
