Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
21 Cards in this Set
- Front
- Back
|
coronary sulcus
|
atrioventricular
encircles heart dividing atria from ventricles |
|
|
interventricular sulci
|
anterior/posterior
between ventricles |
|
|
surfaces
(R/L borders, anterior, posterior) |
R - R atrium
L - L appendage, L ventricle Anterior - R ventricle Posterior - L atrium |
|
|
R coronary artery
(loc, branches, supplies?) |
in atrioventricular/coronary sulcus
supplies: R atrium/ventricle, SA/AV nodes, interatrial septum, parts of: L atrium/ventricle, IV septum branches: -to SA node, marginal branch, posterior interventricular artery (posterior descending) |
|
|
L coronary artery
(branches, supplies?) |
anterior interventricular (Left anterior descenting), circumflex, marginal
supplies: L atrium/ventricle, IV septum, AV bundle |
|
|
cardiac veins
|
great/middle/small/posterior cardiac veins --> coronary sinus --> RA
anterior cardiac veins of RV --> RA venae cordis minimae --> chambers directly |
|
|
R atrium/ventricle
|
deoxygenated blood from body to lungs
tricuspid valve pulmonary valve |
|
|
tricuspid valve
|
between RA/RV
-3 cusps: anterioer, septal, posterior -papillary mm (anterior, septal, posterior) & chordae tendinae prevent eversion of valves |
|
|
pulmonary valve
|
from RV to pulmonary artery
-semilunar valve with 3 semilunar cusps (left, anterior, right) |
|
|
L atrium/ventricle
|
oxygenated blood from lungs out to body
mitral valve aortic valve |
|
|
mitral valve
|
between RA/RV
-2 cusps: anterior, posterior -papillary mm (anterior & posterior), chordae tendinae |
|
|
aortic valve
|
from LV to aorta
-semilunar with 3 cusps (right, posterior, left) |
|
|
cardiac skeleton
|
4 fibrous connective tissue rings
-maintain integrity of valves providing attachment sites for cusps -separate AV musculature -electrically isolate A/V |
|
|
S1 heart sound
|
"lub"
tricuspid/mitral valves closing, systole |
|
|
S2 heart sound
|
"dub"
aortic/pulm valves closing, diastole |
|
|
conducting system
|
the heart initiates its own electrical signals and thus HR
1) SA node (pacemaker) 2) AV node 3) AV bundle (of His) 4) purkinje fibers |
|
|
cardiac plexus innervation
|
sympathetic & parasympathetic nerves at bifurcation of trachea superior to the heart
-nerve fibers along coronary arts to heart -modifies HR, force & output |
|
|
sympathetic innervation
|
from sympathetic chain: superior/middle/inferior cervical cardiac nerves & thoracic cardiac nerve
visceral motor - raise HR & force visceral sensory - cardiac pain |
|
|
parasympathetic innervation
|
from vagus (CN X)
visceral motor - lower HR & force visceral sensory - cardiac reflexes (alterations in BP & blood chemistry) |
|
|
coronary sinus
|
receives venus blood from cardiac veins then dumps into RA
|
|
|
path of a drop of blood from body
|
body
IVC/SVC RA tricuspid RV pulmonary valve pulmonary arteries lungs pulmonary veins LA mitral valve LV aortic valve aorta body |
