i am doing an assignment about the heart. could anyone help?
2007-03-11 08:40:03 · 12 answers · asked by samantha H 1 in Science & Mathematics ➔ Biology
The left side of the heart is more muscular since it has more work to do. While both sides of the heart pump equal amounts of blood, the resistance against which they push is different.
The right side has to push against a relatively flaccid pulmonary circulation (the pulmonary artery, pulm vein, and the cappallaries that surround the alveoli). There is also less cross-sectional area to maintain a pressure across as well. And there is less smooth muscle in the pulmonary system which translates (loosely) into less resistance.
The left side, has to force blood out throughout the body so that it reaches every corner. The means many more blood vessels. And of course the arteries and arterioles have more smooth muscle which is used to maintain the blood pressure.
Now there is an interesting condition called pulmanary hypertension which can lead to "Cor Pulmonale". This is where the right side of the heart is forced to pump against increasing resistance. In this case, the right side can grow as large as the left, and sometimes even larger! See the link for more information.
2007-03-11 08:52:26 · answer #1 · answered by tickdhero 4 · 1⤊ 0⤋
unlike the right hand side of the heart, the left hand side has to pump blood all around the body so needs to have a thick muscular wall.
2007-03-12 06:53:05 · answer #2 · answered by princesspamza 1 · 0⤊ 0⤋
Two reasons:
One, the left side pumps all blood to the rest of the body.
Two, the left side also has to pump against the pressure of the right side, making it more muscular
2007-03-11 08:46:59 · answer #3 · answered by Quarks 1 · 0⤊ 0⤋
it is because the left hand side of the heart pumps the blood around the body and had a thicker outer wall because it is using more force but as an extra piece the left side at the bottom as the thickest wall which i called the left ventricle
2007-03-14 07:01:11 · answer #4 · answered by maxi 1 · 0⤊ 0⤋
Isn't it becoause the left side has further to pump the blood? Because from the left it goes all round the body the right side just pumps blood into the left chamber.
2007-03-11 08:45:37 · answer #5 · answered by Rubber * Duckie 4 · 0⤊ 1⤋
Thats the side that pumps the blood around the body, the other side goes to the lungs and the exchange of carbon dioxide.
2007-03-11 08:44:15 · answer #6 · answered by chloe 3 · 1⤊ 0⤋
Becasuse the left ventricle is the side that pumps the blood throughout your body. Good Luck
2007-03-11 08:44:56 · answer #7 · answered by drysac 4 · 0⤊ 0⤋
appears like pleurisy. Its certainly there is this lining around your lungs and if it isnt shifting spectacular or gets folded incorrect it hurts to respire. I certainly have had it in the past, and that i definately can see how coughing in case you have pleurisy might making you black out using soreness. And in case you have yet another affliction this is inflicting you to cough all the time, that ought to purely reason poor suffering. go see a lung professional(pulmonologist) (those docs in the emergency rooms continuously do a similar element for each case...they only prescribe anti-biotics, soreness drugs and then deliver you on your way for exceedingly plenty something you come returned in there with.) you rather ought to be certain a pulmonologist however.
2016-11-24 20:46:10 · answer #8 · answered by ? 4 · 0⤊ 0⤋
the left side of ther heart is more muscular because it pumps blood through the systemic system, and the right side only pushes blood throught he pulmonary system.
2007-03-11 08:52:53 · answer #9 · answered by Gemini893 2 · 0⤊ 0⤋
On the right side of the heart is full of deoxygenated blood where as the left side is full of oxygenated blood returning from the lungs, so if you think about it carefully it needs to be muscular to carry oxygen!!!!
2007-03-11 09:40:47 · answer #10 · answered by Anonymous · 0⤊ 2⤋