Heart

Question 1

Valves of R atrium

Answer 1

Coronary sinus, SVC, IVC, fossa ovalis, R AV valve

Question 2

Location of SA node

Answer 2

in atrial wall at junction of SVC and sulcus terminalis

Question 3

Location of AV node

Answer 3

in interatrial septum next to opening of coronary sinus and septal leaf of tricuspid valve

Question 4

3 heart sulci

Answer 4

terminalis, atrioventricular, interventricular

Question 5

Location of AV bundle

Answer 5

passing inferior to membranous part of IV septum and dividing on muscular septum to R and L bundle branches

Question 6

vessels entering/exitin R atrium

Answer 6

IVC,SVC,coronary sinus/tricuspid (foramen ovale)

Question 7

Valve cusps of bicuspid

Answer 7

ant + post

Question 8

valve cusps of tricuspid

Answer 8

ant + post + septal

Question 9

smooth and rough walled part of R atrium

Answer 9

smooth - sinus venarum

rough - pectinate muscles

Question 10

bloodflow divider in R ventricle

Answer 10

supraventricular crest

Question 11

exit region of R ventricle

Answer 11

infundibulum

Question 12

portion of heart conducting though R ventricle

Answer 12

moderator band

Question 13

entrance from L vent to aorta

Answer 13

vestibule

Question 14

functions of fibrous heart tissue

Answer 14

sep electrically active tissue, give attachments for muscles

Question 15

diastole vs systole

Answer 15

relaxed vs pump

Question 16

cusps from which the cor arteries arise

Answer 16

R cor - R cusp

L cor - L cusp

Question 17

Branches of R coronary art

Answer 17

nodal, R marginal, posterior interventricular

Question 18

branches of L coronary art

Answer 18

circumflex, LAD

Question 19

blood source to SA and AV nodes

Answer 19

SA - R coronary> nodal

AV - R coronary > posterior interventricular (anastamoses with LAD)

Question 20

contraction rate of atrial vs vent. muscle cells

Answer 20

artial much faster

Question 21

path of AV bundle

Answer 21

inferior to membranous portion of intervent septum and branching as muscular septum - into moderator band on R side

Question 22

Parasymp innervation of heart

Answer 22

vagus>cardiac branches>cardiac plexus>synapes to heart

Question 23

symp innervation to heart

Answer 23

T1-4 postgang fibres>asc to cerv ganglia>leave though cardiac nerves passing through cardiac plexus