Lab Manual Cards Flashcards
What attaches the pericardium to the sternum?
Superior and inferior sternopericardial ligaments
What layer of the pericardium is responsible for maintaining the position of the heart?
Fibrous Pericardium
Which layer of the pericardium is fused to the outer fibrous layer?
parietal
Where is the transverse sinus located?
anteriorly:
Between ascending aorta and pulmonary trunk
posteriorly:
Between SVC and pulmonary veins
Where can the oblique sinus be found?
Posterior to the heart, between the L and R pulmonary veins at the diaphragmatic surface of the heart
Where does the reflection of the visceral pericardium to become the parietal pericardium occur?
across the acsending aorta, SVC, and pulmonary trunk at the sternal angle
What forms the right border of the heart?
right atrium
What forms the left border of the heart?
left ventricle
What separates the sternocostal surface of the heart from the diaphragmatic surface of the heart?
Inferior margin
What forms the posterior surface of the heart?
Mostly the left atrium and a little bit of the right
Which surface of the heart has contributions from all four chambers, with the right ventricle being the primary contributor?
anterior (sternocostal surface)
What marks the boundary of the diaphragmatic surface of the heart?
The area inferior to the coronary sulcus, which is mainly composed of the L and R ventricles
Which intercostal space is at the same level as the apex of the heart?
fifth
Where does the right coronary artery originate?
the right aortic sinus
What artery can be found between the pulmonary trunk and the right auricle?
The right coronary artery
What artery encircles the SVC and gives blood supply to the pacemaker of the heart?
Sinoatrial Nodal Artery
When does the right coronary artery become the posterior interventricular artery?
When it descends into the posterior interventricular sulcus
The _______________ is usually given off before the right coronary artery passes around the inferior margin.
marginal branch
T or F: the right coronary artery supplies bother the SA and AV nodes
True - as the right coronary artery becomes the posterior interventricular it give of the AV nodal artery
Which branch of the right coronary artery anastomoses with anterior interventricular artery of the left coronary artery?
The posterior interventricular
T or F: the circumflex artery is a branch of the right coronary artery
False - its a branch of the left coronary artery
What are the two divisions of the left coronary artery?
anterior interventricular
circumflex
What parts of the heart are supplied by the anterior interventricular artery?
- sternocostal surfaces of both ventricles
- anterior 2/3 of interventricular septum
- bundle of His
What areas of the heart are supplied by the circumflex artery?
- left atrium
- posterior surface of the left ventricle
What drains most of the venous flow of the heart?
The cardiac veins
What is the posterior smooth portion of the right atrium called?
Sinus Venarum
What are the muscles of the anterior muscular portion of the right atrium?
Pectinate muscles
What separates the sinus venarum and pectinate muscles in the right atrium?
Terminal Crest
What is located between the valve of the IVC and the right atrioventricular aperture in the right atrium?
coronary sinus
What indention exists in the interatrial wall, and what is this a remnant of?
Foss ovalis, used to be the foramen ovalis in the fetus
What is the superior margin of the fossa ovalis called?
limbus
What is located deep to the endocardium between the valve of the coronary sinus and atrioventricular aperture?
The AV node
What is the upper smooth-walled portion of the right ventricle called?
Conus arterious (infundibulum)
T or F: the anterior papillary muscle of the right ventricle is attached to the diaphragmatic surface of the heart?
False, the anterior papillary muscle is attached to the sternocostal surface
-The posterior papillary muscle is attached to the diaphragmatic surface
What forms the medial wall of the right atrium?
the interventricular septum
What in the right ventricle extends from the interventricular septum to the base of the anterior papillary muscle?
The moderator band
T or F: the anterior papillary muscle is one of the structures attached to the sternocostal surface of the left ventricle?
True
Which papillary muscle in the left ventricle is attached to the diaphragmatic surface?
The posterior papillary muscle
What structure surrounds the entrance of the ascending aorta and membranous part of the interventricular septum?
aortic vestibule
Where does the pulmonary trunk divide?
Inferior to the aortic arch at the place of the sternal angle into the R and L pulmonary arteries
T or F: the left pulmonary artery courses posterior to the thoracic aorta?
False, it courses anterior to the thoracic aorta
Note: the right pulmonary artery course BEHIND the ascending aorta
What is the relationship of the pulmonary veins to the pulmonary arteries?
anterior and inferior
Where does the trachea bifurcate?
Sternal angle into the R and L main bronchi
Compare the right main bronchus to the left main bronchus.
Larger and shorter and more vertically oriented
overall more chode-like
Where does the right main bronchus enter the lung in relation to the right pulmonary artery?
posterior
What is the course of the left main bronchus?
Passes deep to the aortic arch and anterior to the esophagus and descending aorta to enter the lung inferior to the left pulmonary artery
