heart

Question 1

features of right hand sideof heart

Answer 1

de-oxygenated blood
pulmonary trunk
both vena cavae
right atrium and ventricle

Question 2

features of left hand side of heart

Answer 2

oxygenated blood
aorta
4 pulmonary veins
left atrium and ventricle

Question 3

name the 3 layers of the heart and

Answer 3

epicardium (external)
myocardium (middle)
endocardium (internal)

Question 4

descried the myocardium of the heart

Answer 4

middle layer of cardiac muscle

Question 5

describe the endocardium of the heart

Answer 5

internal layer, continuous with the connecting blood vessels

Question 6

name and describe the position of the chambers of the heart

Answer 6

left ventricle - forms left border
left atrium - forms posterior surface
right ventricle - forms most of anterior
right atrium - forms right border

Question 7

name the great vessels of the heart

Answer 7

aorta
pulmonary trunk
4x pulmonary veins
superior and inferior vena cava

Question 8

what are the names and function of the cardiac valves

Answer 8

function - ensure blood flows correct way
pulmonary valve
tricuspid valve
bicuspid valve
aortic valve

Question 9

state position of pulmonary valve

Answer 9

between the right ventricle and pulmonary trunk

Question 10

state position of tricuspid valve

Answer 10

between the right atrium and ventricle

Question 11

state position of mitral(bicuspid) valve

Answer 11

between the left atrium and ventricle

Question 12

state position of the aortic valve

Answer 12

between the left ventricle and aorta

Question 13

describe the steps taken by the conduction system of the heart to make it contract (4 steps)

Answer 13

1- electrical impulse from SA node contracts atria
2- electric impulse reaches AV node (in atrioventricular septum)
3- travels down left and right bundles in the interventricular septum
4- spreads to myocardium through conducting fibres, ventricles contract