Cardio/test 4

Front 1

location of the pectinate muscles

Back 1

left and right auricles and the anterior wall of the right atrium

Front 2

function of the pectinate muscles

Back 2

increases force of the atrial contraction without increasing heart mass

Front 3

What is trabeculae carnea

Back 3

they prevent bubble formation that may occur when blood flows rapidly and trubulenity inside the ventricles

Front 4

where are trabeculae carnea located

Back 4

raised muscles bundles in both ventricles except the conus arteriosus

Front 5

what is the conus arteriosus

Back 5

the smooth, conical area immediately below the pulmonary valvein the right ventrical

Front 6

The endocardium is also know as the

Back 6

endothelium

Front 7

The endocardium is continuous with what

Back 7

the great vessels

Front 8

superficial ventricular muscle bundles wrap around what

Back 8

both ventricles

Front 9

deeper ventricular muscle bundles doo what

Back 9

spiral around each ventricle individually

Front 10

What are papillary muscles

Back 10

coned shaped trabeculae carnea in the ventricles

Front 11

What are chordae tendoneae

Back 11

tendon like cords attached to the papillary muscles proximally and to the AV valve cusps distally

Front 12

function of the chordae tendoneae

Back 12

they prevent valve eversion (prolapse) into the atria and regurgitation of blood into the atria during ventricular contraction

Front 13

an electrical conduction shortcut from the right bundle branch to the more laterally located papillary muscles within the right ventricle

Back 13

moderator band in the right ventricle

Front 14

What shape is the right ventricular chamber

Back 14

crescent shaped in transverse section and contracts like bellows

Front 15

what shape is the left ventricular chamber

Back 15

conical shap and it decreases the base apex distance and ventricular chamber diameter

Front 16

dense connective tissue rings surrounding the four valves that fuses the valves together and merges with the inter ventricular septum

Back 16

fibrous skeleton

Front 17

provides a foundation for heart valve structure

Back 17

fibrous skeleton

Front 18

each heart valve has a skingle fibrous ring know as what

Back 18

annulus

Front 19

this item acts as an insertion point for cardiac muscle

Back 19

fibrous skeleton

Front 20

prevents overstreching of the valves as blood flows through them

Back 20

fibrous skeleton

Front 21

acts as an electrical insulator preventing direct spread of the action potential from atria to ventricles

Back 21

fibrous skeleton

Front 22

a series of grooves on the heart surface that contain coronary blood vessels and variable amounts of fat

Back 22

sulci

Front 23

where is the coronary sulcus located

Back 23

between the atria and the ventricles

Front 24

where is the anterior/posterior inter ventricular sulci

Back 24

between the right and left ventricles on the anterior and posterior sides of the heart

Front 25

What makes up the cardiac cycle

Back 25

the beginning of one heartbeat to the beginning of the next, includes one systole and one diastole

Front 26

a period of myocardial contraction involving both the atria and ventricles

Back 26

systole

Front 27

systemic arterial blood pressure is at its high during what

Back 27

systole

Front 28

a period of myocardial relaxation during which the heart fills with blood

Back 28

diastole

Front 29

systemic arterial blood pressure is at its lowest

Back 29

diastole

Front 30

smooth muscle in the vessel walls primarily the what have a slightly different receptor arrangement for epinephrine and norepinephrine than the systemic circulation

Back 30

arteries