Lab 30A Cardiovascular

Front 1

Location of heart in thorax

Back 1

mediastinum

Front 2

superior heart chambers

Back 2

atria

Front 3

inferior heart chambers

Back 3

ventricles

Front 4

visceral pericardium

Back 4

epicardium

Front 5

anterooms of the heart

Back 5

atria

Front 6

equals cardiac muscle

Back 6

myocardium

Front 7

provides nutrient blood to heart muscle

Back 7

coronary arteries

Front 8

lining of heart chambers

Back 8

endocardium

Front 9

actual pump of heart

Back 9

ventricles

Front 10

drains blood into r. atrium

Back 10

coronary sinus

Front 11

what is the function of the valves in the heart

Back 11

enforce one way flow.....prevent back flow

Front 12

what is the role of the chordae tendineae

Back 12

anchor AV during ventricular systole, prevents back flow of blood into atria

Front 13

P arteries
P capillaries heart
P veins

Back 13

pulmonary circuit

Front 14

S. arteries
heart S. capillaries
S. veins

Back 14

systemic circuit

Front 15

what is the function of the fluid that fills the pericardial sac

Back 15

reduce friction during heart activity

Front 16

differentiate between the roles of the pulmonary circuit and the systemic circuit

Back 16

pulmonary to lungs gas exchange
systemic to body tissue

Front 17

Right atrium to ______

Back 17

tricuspid valve

Front 18

Tricuspid valve to the ____

Back 18

right ventricle

Front 19

Right ventricle thru the _____

Back 19

pulmonary semilunar

Front 20

pulmonary semilunar valve to the _______

Back 20

pulmonary trunk

Front 21

pulmonary trunk to the ____ and ______ ___________

Back 21

right and left pulmonary arteries

Front 22

right and left pulmonary arteries to the ______ of the _____

Back 22

capillary beds of the lungs

Front 23

capillary beds of the lungs to the ______

Back 23

pulmonary veins

Front 24

pulmonary veins to the ____

Back 24

left atrium

Front 25

left atrium of heart through the _____

Back 25

mitral/bicuspid valve

Front 26

mitral/bicuspid valve to the ______

Back 26

left ventricle

Front 27

left ventricle through the ________

Back 27

aortic semilunar valve

Front 28

aortic semilunar valve to the _____

Back 28

aorta

Front 29

aorta to the _______-

Back 29

systemic arteries

Front 30

systemic arteries to the ___________

Back 30

capillary beds of the tissues

Front 31

capillary beds of the tissues to the ________

Back 31

systemic veins

Front 32

systemic veins to the _________ and _________ __________

Back 32

inferior and superior vena cava and coronary sinus

Front 33

inferior and superior vena cava and coronary sinus, entering the __________

Back 33

right atrium

Front 34

If the mitral valve does not close properly, which circulation is effected

Back 34

systemic

Front 35

Why might a thrombus (clot) in anterior descending branch of left coronay artery cause sudden death

Back 35

artery supplys blood to interventricular septum and anterior walls of both ventricles. ventricular damage to left ventricle is serious

Front 36

coronary arteries supplys

Back 36

interventricular septum and anterior walls of both ventricles

Front 37

how would you distinguish the structure of cardiac muscle from skeletal muscle.

Back 37

both are striated (not distinguishable)
skeletal long cylindrical cells many peripheral nuclei per cell.
cardiac one or two centrally located nuclei per cell: branched ends intercalated discs

Front 38

describe uniques anatomical features of cardiac muscle. what role does structure play in its function

Back 38

cardiac muscle cells form functional syncytium b/c intercalated discs
structure of and arrangement allows pumping to be coordinated

Front 39

diffences in left or right ventricle chambers

Back 39

left ventricle firm right chamber flabby

Front 40

which is thicker right or left ventricle

Back 40

left ventricle

Front 41

diffence in the right and left chambers reflects what

Back 41

left ventricle pumps blood thru high resistance systemic circuit so needs to be stronger
right ventricle pumps blood through short low resistance pulmonary circuit

Front 42

semilumnar valves prevent back flow into the ______

Back 42

ventricles

Front 43

av valves prevent back flow into the ___________

Back 43

atria

Front 44

how does operation of semilunar valves differs from the AV valves

Back 44

ventricle compressed (systole) AV valves move superiorly closed
When blood flows into semilunar valve cusps fill and close valve

Front 45

compare and contrast structure of right and left atrioventricular valves

Back 45

both thin flaps secured to chordae tendineae. Right vlave has three cusps, left valve has two

Front 46

Two remnants of fetal structures ________

Back 46

arteriosum and fossa ovalis

Front 47

what is the arteriosum and fossa ovalis called in fetal heart where are they located

Back 47

ligamentum arteriosum ductus arteriousus btwn pulmonary trunk & aorta
Foramen ovale in atrial septum

Front 48

in the featl heart ligamentum arteriosum and Foramen ovale served what function

Back 48

ligamentum arteriosum
Foramen ovale
allowed blood to bypass nonfunctional lungs

Front 49

can the heart function with leaky valves

Back 49

yes

Front 50

differntiate clearly between the roles of the pulmonary circuit and the systemic circuit

Back 50

pulmonary circuit provides for gas exchange only
systemic cicuit supplies body tissue