W2 Heart and Great Vessels Flashcards
What is the heart contained within
fibrous pericardium
What is the fibrous pericardium attached to
diaphragm
Where does the heart lie
mainly behind the sternum
what does the tip of the right atrium line up with
3rd right costal cartilage
What does the left atria line up with
mid clavicle line and 2nd costal cartilage
where does the apex of the heart sit
fifth intercostal space
where does the base of the right atrium sit
6th costal cartilage
What are the valves between the right atria and right ventricle
tricuspid valve
What are the valves between the right ventricle and pulmonary artery
pulmonary semi lunar valves
What are the valves between the left atria and left ventricle
bicuspid valve
What are the valves between the left ventricle and the aorta
aortic semi lunar valves
what is the function of the pulmonary trunk
conduct deoxygenated blood from heart to lungs
What do the carotid arteries supply blood to
head and neck
What do the subclavian arteries supply blood to
arms
What comes off the brachiocephalic trunk
right carotid artery and the right subclavian artery
What drains the head
jugular arteries
What drains into the vena cava
jugular vein, subclavian vein
What is different about foetuses hearts
hole in the atrial septum, and tube between the pulmonary artery and the aorta
What is the hole in the atrial septum called
foramen ovale
What is the the foramen ovale called when it closes
fossa ovalis
What is the tube between the pulmonary artery and the aorta called
ductus arteriosum
What is the ductus arteriosum called when it closes
ligamentum arteriosus
What causes the closure of the foramen ovale and the ductus arteriosum
babies first breath
What is the effect of the foramen ovale
oxygenated and deoxygenated blood mix
what is in the posterior part of the mediastinum
descending thoracic aorta, oesophagus
what is the function of the coronary arteries
supply muscle of the heart with oxygenated blood
what do the coronary arteries arise from
ascending aorta
describe the location of the coronary arteries
run around the coronary groove, branch to the atria and ventricles
what does the right coronary artery supply
mainly right atria and right ventricle
what does the left coronary artery split into
anterior ventricular artery and the circumflex
what comes off the right hand side in right dominance
posterior inter-ventricular artery
why does being left dominant increase mortality rate
if there is a clot blood supply to left ventricle would be lost
wall of which ventricle is more muscular
left ventricle
which side of the heart carries deoxygenated blood
right
where on the chest would you place a stethoscope if you wanted to listen to the closing of the tricuspid valve
6th costal cartilage
Where are the sino atrial node located
right atrial wall
Where is the atrio ventricular node located
inter atrial septum near the opening of coronary sinus
