<span> Blood flow to the </span>heart<span> is blocked its known as a heart attack, this is due to circulatory problems.
C</span>ardiac arrest<span> is when the heart stops completely and all of a sudden unlike a heart attack its known to be an e</span><span>lectrical problem.
Someone having cardiac arrest and are unresponsive, would need to be shocked by </span><span>defibrillator, whereas if someone is having a hear attack you will need to put them into recovery position and do CPR.</span><span>
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If i understood your question right, the cars going straight have to keep going until the red light. but people going either left or right, have to slow down for the other people on the other side of the intersection to cross going either left or right.
Answer:
<h2>Don't know....</h2>
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Answer:
Both the respiratory and circulatory systems works in coordination in order to purify the blood.The heart continuously pumps blood and the lungs at alveolar sacs the CO2 and O2 get exchanged.Continuously through the diffusion.
From body parts the blood reaches at heart through Vena cava To right atrium,then from Right ventricle through pulmonary artery it reaches to lungs and get purified.Form there it again comes back to heart through pulmonary vein and again through Aorta it again reaches to the body parts.
Hope it helps....
