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Flashcards in Gross Anatomy Deck (38)
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1

atrioventricular (coronary) sulcus

•separates the atria from the ventricles
•fat and vessels

2

anterior interventricular sulcus

•marks the boundary between the ventricles anteriorly
•fat and vessels

3

posterior interventricular sulcus

•marks the boundary between the ventricles posteriorly

4

right atrium

•blood returning from the body - inferior vena cava and superior vena cava (smooth surface continues into atria)
•sinus venarum
•auricle of the right atrium
•pectinate muscle
•crista terminalis - sulcus terminalis
•fossa ovalis
•valve for coronary sinus

5

sinus venarum

•smooth surface of the RA
•derived from sinus venosus, which joins the RA during development

6

auricle of the right atrium

•vestige of primitive right atrium

7

pectinate muscle

•underlying muscle in RA
•ridges and valleys

8

crista terminalis

•smooth sinus venarum and rough auricle of RA are separated by this ridge internally

9

sulcus terminalis

•smooth sinus venarum and rough auricle of RA are separated by this ridge externally

10

fossa ovalis

•foramen ovale in utero - remnant of a valve that shunted blood from the RA to the LA prior to birth

11

right ventricle

•tricuspid valve (right atrioventricular)
•trabeculae carnae
•papillary muscles
•chordae tendinae
•interventricular septum
•moderator band
•pulmonary valve
•conus arteriosus

12

tricuspid valve

•separates RA and RV
•aka right atrioventricular valve
•three flaps

13

trabeculae carnae

•underlying muscle causing ridges and valleys in the rough surface of the RV

14

papillary muscles of RV

•attach to flaps of the tricuspid valve
•anterior, posterior and septal
•keep the valve from prolapsing back into the atrium during heart contraction
•one flap or leaflet has two papillary muscles associated with it

15

chordae tendinae of RV

•attachment between muscle and valve

16

conus arteriosus

•smooth portion of the RV
•located superiorly in the direction of the pulmonary valve

17

interventricular septum

•separates the right and left ventricles

18

moderator band

•carries part of the right bundle branch of the AV bundle
•originates on the interventricular septum and passes towards the anterior papillary muscle

19

left atrium

•receives oxygenated blood from pulmonary veins
•pulmonary veins - converge to from the LA
•smooth walled
•most posterior of the four chambers
•"foramen ovale" can be seen in the right wall

20

left ventricle

•receives oxygenated blood from LA
•pumps blood to aorta
•rough, chamber walls thickest
•mitral valve (left atrioventricular)
•papillary muscles
•chordae tendinae
•aortic valve

21

mitral valve

•aka left atrioventricular valve
Bicuspid

22

papillary muscles of LV

•attach to mitral valve flaps
•prevents mitral valve flaps from prolapsing during ventricular contraction
•anterior and posterior
•one flap or leaflet has two papillary muscles associated with it

23

chordae tendinae of LV

•attachment between muscle and valve

24

Auscultatory Areas

•aortic area - 2nd I.C.S. just right of sternum
•pulmonary area - 2nd I.C.S. just left of sternum
•mitral area - at apical pulsation
•tricuspid area - left side of body of sternum just superior to the xiphisternal junction

25

Sinoatrial Node

•sets regular rhythm of heart
•specialized cells that have an inherent rhythm for producing action potentials
•junction of superior vena cava and RA

26

atrioventricular node

•near tricuspid (right atrioventricular valve)
•second pacemaker
•electrical impulses move to interventricular septum

27

coronary arteries

•blood supply to tissues of the heart
•openings are in the sinuses of the aortic valve
•open during diastole
•right and left

28

right coronary artery

•passes anteriorly, in the coronary (atrioventricular) sulcus
•passes inferiorly and just superior to the inferior margin of the heart, gives off right marginal artery --> RV
•proceeds posteriorly, still in coronary sulcus, giving off posterior interventricular artery between the right and left ventricles

29

left coronary artery

•emerges under the auricle of the LA
•immediately divides into anterior interventricular artery (left anterior descending artery) running in the anterior interventricular sulcus
•and circumflex branch, which runs posteriorly in the coronary (atrioventricular) sulcus
•sometimes the posterior interventricular artery may branch off from left coronary artery instead of the right

30

small cardiac vein

•travels with the right marginal branch artery
•drain into the coronary sinus