Excercise 27- HEART
Blood flow through the heart #14
aorta
Blood flow through the heart #13
aortic semilunar valve
endocardium
inner layers; forms the valves, endothelium layer
endo
inner, inside
Blood flow through the heart #10
left atrium
What side of the heart works the hardest?
left side (left ventricle)
Blood flow through the heart #12
left ventricle
Blood flow through the heart #8
lungs (pulmonary circulation)
myocardium
middle layer, thickest layer, cardiac muscle
Myo
muscle
parietal pericardium
outer connective tissue
mediastinum
partition between the lungs, heart is found inside this area
Blood flow through the heart #7
pulmonary arties
Blood flow through the heart #5
pulmonary semilunar valve
Blood flow through the heart #6
pulmonary trunk
Blood flow through the heart #9
pulmonary veins
What does the right ventricle do?
pump blood out the body; pumps blood to lungs
What does the left ventricle do?
pumps blood out the lungs; pumps blood to the body
What does the pericardial cavity?
reduces friction; holds heart in place
veins
return blood to the heart
Blood flow through the heart #2
right atrium
Blood flow through the heart #4
right ventricle
Blood flow through the heart #1 (3 inflows of blood)
superior vena cava, inferior vena cava, coronary sinus
cardiac veins
take blood from the heart muscles
coronary veins
take blood in the heart (myocardium)
Blood flow through the heart #3
tricuspid valve (right atrioventricular valve)
How many pumps are there in the heart and what are they called?
two; right ventricle and left ventricle
What does the interventricular septum divides?
ventricles
Why is the position of the heart important?
1. placing of stethoscope 2. placing of EKG
What is a heart attack?
Myocardial Infection
Where does aorta takes blood?
everywhere
What are papillary muscles?
extentions of heart muscle
What's the 4 valves from the interior to the heart?
2 atrioventricular; 2 semilunar
What's the 4 chambers from the interior to the heart?
2 superior artia; 2 inferior ventricles
Where's the base of the heart?
at the top (superior)
What does the chordae tendineae do?
attachments from papillary muscles to AV valves
Blood flow through the heart #11
biscuspid valve (left atrioventricular valve)
Blood flow through the heart #15
body tissues (systemic circulation)
arties
carry blood away from the heart
pericardial cavity
cavity containing the heart, contains pericardial fluid.
visceral pericardium (epicardium)
covers surface of heart
What does the interatrail septum in the interior of heart do?
divides atria
