मनुष्य में रक्त परिसंचरण को समझाइए।
Answers
Answer:
मनुष्य में रक्त परिसंचरण का कार्य हृदय व रक्त वाहिनियाँ मिलकर करती है | हृदय रक्त परिसंचरण के लिए पम्प के रूप में कार्य करता है , रक्त वाहिनियाँ रक्त को शरीर में एक स्थान से दूसरे स्थान तक ले जाती हैं | हृदय वजन लगभग 280 ग्राम होता है। हृदय एक पम्प की तरह काम करता है। हृदय से रक्त धमनियों द्वारा शरीर के विभिन्न भागों में जाता है तथा वहां से शिराओं के द्वारा हृदय में वापस आता है। इस तरह मनुष्य में रक्त परिसंचरण होता है |
Answer:
Humans have circulatory system or cardiovascular system that transport blood, nutrients, hormones, oxygen, carbon dioxide and other essential substances to different parts of body.
Explanation:
The circulatory system is consist of blood vessels that carry and transport blood away from and towards the heart.
There are two parts of blood circulatory system: pulmonary circulation and systemic circulation.
In pulmonary circulation: The heart has pulmonary artery which split splits into two main branches, which brings blood from the heart to the lungs. The lungs utilize oxygen and drops off carbon dioxide and then blood carried back to heart through the pulmonary veins.
In systemic circulation: Blood return to heart carry large amount of oxygen, which is than transport by aorta to different body parts through several branches coming out of the aorta. Each body part has capillary that connect artery to veins and transport nutrients and oxygen to the cells. capillaries carry waste products and lead into small veins. veins then carry blood back to the heart from different parts and it re-enter the pulmonary circulation and then to lungs.
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