Heart (Mark) Flashcards
Describe circulation of the heart
Blood comes into the right atrium from the body, moves into the right ventricle and is pushed into the pulmonary arteries in the lungs.
- > After picking up oxygen
- > the blood travels back to the heart through the pulmonary veins into the left atrium
- > to the left ventricle and out to the body’s tissues through the aorta
Membranous part of interatrial septum
R - Aorta
G - Pulmonary trunk
Right fibrous trigone
What is anchoring pulmonary trunk to Right fibrous trigone
Ligament of Conus arteriosus
Name of this nerve.
-> Which artery travels with this nerve?
Phrenic nerve
-> travel with pericardiophrenic artery
Identify + name of chamber
Pectinate muscle at right atrium
Identify + what contributes to this?
Crista terminalis
(contributed by Septum spurium)
(The crista terminalis originates from regression of the septum spurium as the sinus venosus is incorporated into the right atrial wall )
R - SVC
G - Left brachiocephalic vein
R - Subclavian vein
G - Internal Jugular vein
Azygos vein (The last tributary of SVC(
Subclavian v. develop from __
Left 4th aortic arch (it also gives off aorta)
Recurrent laryngeal nerve (CN X)
What gives off the pulmonary trunk?
6th aortic arch
What does 3rd aortic arch gives off?
Proximal segment of internal carotid arteries on both sides
Descending aorta
Which vertebral level that the descending aorta gets attached and terminates?
T4
What kind of blood is found in this structure?
Pulmonary trunk
-> Deoxygenated blood (or venous blood)
What is this?
Pericardium
Which points determine the oblique sinus?
- Pulmonary veins + ivc
Name of the space (where the finger point)
Transverse sinus
Ligamentum arteriosum (connection between left pulmonary artery and descending aorta)
Which heart chamber is this?
Right atrium
Crista terminalis
Pectinate muscle
Septal cusp of tricuspid valve
From which direction we are seeing this heart?
Posterior surface
Membranous part
A branch from L coronary artery
Aorta
Pulmonary trunk
Name the chambers of the heart
R - right atrium
G - Right ventricle
B - Left ventricle
(left atrium is not seen here)
The continuation of Eustachian valve
Name of this triangle.
-> Borders, contents?
Koch’s triangle
Borders:
1 - Coronary sinus
2 - Root of septal cusp
3 - IVC
Content: you can find the AV node here
What gives rise to membranous part of interventricular septum
Membranous interventricular septum is formed by the downward growth of the aorticopulmonary septum (towards the muscular interventricular septum and posterior-inferior proliferation of tissue from the endocardial cushions.)
Anterior cusp of tricuspid valve
Supraventricular crest
R - Anterior semilunar valve
G - Left semilunar valve
Identify
-> What does it arise from?
Non-coronary sinus
(Of the 2 intercalated endocardial cushions, the right cushion eventually forms the posterior aortic valve cusp, whereas the left forms the anterior pulmonic valve leaflet.)
Membranous part of interventricular septum
View of this heart?
Posterior view
Anterior interventricular branch of L coronary a.
