10rh class sci notes on structure of human heart and importance of double circulation
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Heya,
H༘E༘A༘R༘T༘
Heart is a central pumping station of the blood vascular system. The chambers that recieves blood from various parts of the body is/are called auricles and the chambers that pump blood to all body parts are called ventricals.
The right auricle recieves only deoxygenated blood and the left ventricle recieves only oxygenated blood.
The left auricle recieves oxygenated blood from lungs and transfers it to the left ventricle, which pumps it to the entire body.
ᕼᑌᗰᗩᑎ ᕼᗴᗩᖇᎢ
In human beings, the heart is situated between the two lungs and lies behind the sternum in the thorax. It is a hollow conical organ with its narrow apex pointing downwards to the left. The heart is surrounded by a sac, called Pericardium.
ՏԵՐՄՇԵՄՐe ԾԲ ɧeԹՐԵ ⬇
● C̥h̥ḁm̥b̥e̥r̥s̥
The human heart consist of four chambers, two auricles (Atria) and two ventricals. The right auricle recieves deoxygenated blood from all parts of body while left auricle receives oxygenated blood from lungs. Left and right auricle are separated by an interatrial septum.
Ventricals receives deoxygenated blood from the right auricle and the left ventricle recieves oxygenated blood from the left auricle. Two ventricals are separated by interventricular septum.
● T̥h̥e̥ h̥e̥ḁr̥t̥ v̥ḁl̥v̥e̥s̥
Each orifice between auricle and the corresponding ventricle remains guarded by an atrioventricular valve, The orifice of the pulmonary artery is guarded by pulmonary valve.
● S̥y̥s̥t̥o̥l̥e̥ ḁn̥d̥ d̥i̥ḁs̥t̥o̥l̥e̥
The contraction of a cardiac chamber are known as its Systole, The relaxation of a cardiac chamber are known as its diastole.
One Systole and one diastole constitute one complete heart beat. The heart of a healthy
adult at rest normally beats 70-75 times per minute.
D̰O̰ṴB̰L̰Ḛ C̰ḬR̰C̰ṴL̰A̰T̰ḬO̰N̰ ...
The right side of the heart serves as one pump .It contains only deoxygenated blood recieves from the body and send to the lungs through pulmonary circulation. The left side of the heart serves as the second pump. It contains only oxygenated blood recieved from the lungs and sends to the body through systematic circulation, Thus, there is no mixing of oxygenated and deoxygenated blood in the heart . The blood passes through the heart twice, once along the pulmonary circuit and second time in the systemic circuit. This type of circulation of blood is known as double circulation.
W̥H̥Y̥ I̥T̥ I̥S̥ N̥E̥C̥E̥S̥S̥ḀR̥Y̥?̥
The double circulation allows a highly efficient supply of oxygen to the body organs. This is very useful for human beings who have high energy needs.
Hope this will help you!!
H༘E༘A༘R༘T༘
Heart is a central pumping station of the blood vascular system. The chambers that recieves blood from various parts of the body is/are called auricles and the chambers that pump blood to all body parts are called ventricals.
The right auricle recieves only deoxygenated blood and the left ventricle recieves only oxygenated blood.
The left auricle recieves oxygenated blood from lungs and transfers it to the left ventricle, which pumps it to the entire body.
ᕼᑌᗰᗩᑎ ᕼᗴᗩᖇᎢ
In human beings, the heart is situated between the two lungs and lies behind the sternum in the thorax. It is a hollow conical organ with its narrow apex pointing downwards to the left. The heart is surrounded by a sac, called Pericardium.
ՏԵՐՄՇԵՄՐe ԾԲ ɧeԹՐԵ ⬇
● C̥h̥ḁm̥b̥e̥r̥s̥
The human heart consist of four chambers, two auricles (Atria) and two ventricals. The right auricle recieves deoxygenated blood from all parts of body while left auricle receives oxygenated blood from lungs. Left and right auricle are separated by an interatrial septum.
Ventricals receives deoxygenated blood from the right auricle and the left ventricle recieves oxygenated blood from the left auricle. Two ventricals are separated by interventricular septum.
● T̥h̥e̥ h̥e̥ḁr̥t̥ v̥ḁl̥v̥e̥s̥
Each orifice between auricle and the corresponding ventricle remains guarded by an atrioventricular valve, The orifice of the pulmonary artery is guarded by pulmonary valve.
● S̥y̥s̥t̥o̥l̥e̥ ḁn̥d̥ d̥i̥ḁs̥t̥o̥l̥e̥
The contraction of a cardiac chamber are known as its Systole, The relaxation of a cardiac chamber are known as its diastole.
One Systole and one diastole constitute one complete heart beat. The heart of a healthy
adult at rest normally beats 70-75 times per minute.
D̰O̰ṴB̰L̰Ḛ C̰ḬR̰C̰ṴL̰A̰T̰ḬO̰N̰ ...
The right side of the heart serves as one pump .It contains only deoxygenated blood recieves from the body and send to the lungs through pulmonary circulation. The left side of the heart serves as the second pump. It contains only oxygenated blood recieved from the lungs and sends to the body through systematic circulation, Thus, there is no mixing of oxygenated and deoxygenated blood in the heart . The blood passes through the heart twice, once along the pulmonary circuit and second time in the systemic circuit. This type of circulation of blood is known as double circulation.
W̥H̥Y̥ I̥T̥ I̥S̥ N̥E̥C̥E̥S̥S̥ḀR̥Y̥?̥
The double circulation allows a highly efficient supply of oxygen to the body organs. This is very useful for human beings who have high energy needs.
Hope this will help you!!
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duragpalsingh:
Nice explanation!
Thanka bro!! :-)
copied
= _ = Don't joke!!
sorry
Nice answer
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Answer:it is easy to draw structure of heart hope it's help
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