, circulatory system
·
multicellular organs have a low Sa : V ratio : need a circulatory system
.
·
circulatory system is a double circulatory system because blood passes through heart twice In I complete circuit
of body
.
·
closed circulatory system : blood fully enclosed in vessels at all times
circulatory system made up of heart+ blood vessels
·
blood transports respiratory gases , products of digestion metabolic
,
wastes + hormones round the body . 2 circuits :
L I takes blood from heart lungs >
-
heart
2 takes blood to rest of body
Coronary Arteries
·
supply heart muscle with essential nutrients + oxygen .
these cells have high conc of Mitochondria for aerobic resp
to generate ATP
·
If coronary arteries was blocked , cells wouldn't be able to respire , heart can't contract , tissues die as heart tissue
deprived of glucose + oxygen
.
aorta
·
supplies coronary artery with blood
.
① Right atrium :
receives deoxygenated blood from body
② inferior vena cava-brings deoxy blood from lower part of body
to right atrium
⑤ superior vena cava-brings blood from upper body + transports It to
right atrium
& BICUspid Valve (leftAV) allow blood from LA to LV
= +
prevents backflow
⑤ Tricuspid Value (right Avl = allows blood from RA-RV +
stops backflow
⑥ Right ventricles pumps deoxy blood
: to lungs
⑦ pulmonary = carry deoxy blood from Rvelungs
arteries
⑧ Left atrium =
receives oxy blood from lungs
⑨ pulmonary veins =
carries oxy blood from lungs - LA
·
multicellular organs have a low Sa : V ratio : need a circulatory system
.
·
circulatory system is a double circulatory system because blood passes through heart twice In I complete circuit
of body
.
·
closed circulatory system : blood fully enclosed in vessels at all times
circulatory system made up of heart+ blood vessels
·
blood transports respiratory gases , products of digestion metabolic
,
wastes + hormones round the body . 2 circuits :
L I takes blood from heart lungs >
-
heart
2 takes blood to rest of body
Coronary Arteries
·
supply heart muscle with essential nutrients + oxygen .
these cells have high conc of Mitochondria for aerobic resp
to generate ATP
·
If coronary arteries was blocked , cells wouldn't be able to respire , heart can't contract , tissues die as heart tissue
deprived of glucose + oxygen
.
aorta
·
supplies coronary artery with blood
.
① Right atrium :
receives deoxygenated blood from body
② inferior vena cava-brings deoxy blood from lower part of body
to right atrium
⑤ superior vena cava-brings blood from upper body + transports It to
right atrium
& BICUspid Valve (leftAV) allow blood from LA to LV
= +
prevents backflow
⑤ Tricuspid Value (right Avl = allows blood from RA-RV +
stops backflow
⑥ Right ventricles pumps deoxy blood
: to lungs
⑦ pulmonary = carry deoxy blood from Rvelungs
arteries
⑧ Left atrium =
receives oxy blood from lungs
⑨ pulmonary veins =
carries oxy blood from lungs - LA
