Heart and lung Flashcards
When does the trachea branch to R and L?
Transverse thoracic plane
Where is the carina?
The midline where the bronchus bifurcates.
What is complete deflation of the lung called?
Atelectasis
The pulmonary valve has a right, left, and _______ cusp.
Anterior
The aortic valve has a right, left, and _______ cusp.
Posterior
Where do you find pectinate muscles?
Anterior portion of right atrium
What marks the change from rough to smooth surfaces inside the RA?
Crista terminalis
What is the opening of coronary sinus?
A hole into the RA that drains venous blood from the heart itself
What is the fossa ovales?
Closed foramen ovale
What do the right auricles do?
Extra space that expands if blood returning to the heart greatly increases (e.g. during exercise)
What are the trabeculae carnae?
Muscular ridges of RV
What are chordae tendinae?
Cords that stabilize the tricuspid valve cusps.
What are papillary muscles?
Muscles that contract to tighten chordae tendinae
Keep the valve closed during ventricular contraction
What are the branches of the right coronary artery?
Sinoatrial nodal a.
R. Marginal a.
Posterior interventricular a.
What are the branches of the left coronary artery?
Anterior interventricular a. (LAD)
Circumflex a.
What are the cardiac veins and where are they?
Great cardiac vein (found w/ LAD)
Middle cardiac vein (found w/ posterior interventricular a.)
Small cardiac vein (found w/ right marginal a.)
Where do the cardiac veins drain?
Coronary sinus
What makes up the first heart sound (lub)?
Closing of mitral and tricuspid valves
What makes up the second heart sound (dub)?
Closing of aortic and pulmonary valves
Where can you place the stethoscope to hear the tricuspid valve close?
At the 5th intercostal space slightly to the left of the sternal border.
What attaches to the manubrium?
1st and 2nd ribs
Body of sternum
Clavicle
