heart anatomy Flashcards
what is the function of the right auricle
an expression sleeve of the atrium - that is hollow inside
- expands with sudden abrupt increase in volume
LA,RA,LV,RV
which forms base of the heart
LA
semilunar depression location
on the interatrial septum on other side of oval fossa
trabeculae carnae have (regular/irregular) muscular arrangement that allows for a contraction from all direction
Irregular
match:
chordae tendineae
papillary muscle
a. string like structures attaching AV valve to papillary muscles on ventricle walls
b. each leaflet of the valve controlled by its own muscle, contract during ventricular systole holding the valve in closed position (pressure closes it)
chordae tendineae = a
papillary muscle = b
bundle of His incorporated in which location
Interventricular Septum
Which of the following is FALSE?
a. Fibrous Pericardium = outermost, non-elastic, prevent overfilling & connects to neighbours holding heart position
b. Parietal Serous Pericardium = middle, lines & loosely adheres to outer aspect of fibrous (no space between layers)
c. Pericardial Space - between the parietal and visceral serous layers
d. Visceral Serous Pericardium / Epicardium = inner, when the parietal serous pericardium approaches great vessels (aorta, superior vena cava), it folds back & continues covering their origins as well as the external surface of heart
b. Parietal Serous Pericardium – middle, lines & FIRMLY adheres to INNER aspect of fibrous (no space between layers)
which sulcus runs around the heart’s widest circumference & separates atria from ventricles
coronary sulcus
circulatory circuit: what follows
aortic valve -> aorta -> capillaries-> ??
venules -> veins -> IVC & SVC
circulatory circuit: what follows
RV-> pulmonary valve -> pulm. trunk. -> ?? -> pulm. capillaries -> ???
pulm. arterioles-> pulm. capillaries -> 2+2 pulmonary veins -> LA -> LV
(p)ericardium is innervated by which nerve
(p)hrenic nerve
