Question

write a note on:-
1.Human excretory system
2.Human heart and it's working.
Answer for the brainliest

Answer 1

1. The human excretory system functions to remove waste from the human body . This system consists of specialised structures and capillary networks that assist in the excretory process .The human excretory system includes the Kidneys and their functional unit, the nephron .

2. The heart is a pump that circulates blood all around the body . it is approximately the size of a human fist and is located just to the left of the centre of a human's chest .

working:

The right side of the heart receives oxygen poor blood from the veins and pumps it to your lungs , where it picks up oxygen and gets rid of carbon dioxide .
The left side of your heart receives oxygen rich blood from your lungs and pumps it through your arteries to the rest of your body .

I hope this helps !! :)

Answer 2

Hallo friend
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Human excretory system


The human excretory system functions to remove waste from the human body. This system consists of specialized structures and capillary networks that assist in the excretory process. The human excretory system includes the kidneys and their functional unit, the nephron. The excretory activity of the kidneys is modulated by specialized hormones that regulate the amount of absorption within the nephron.







Human heart













The human heart is an organ that pumps blood throughout the body via the circulatory system, supplying oxygen and nutrients to the tissues and removing carbon dioxide and other wastes.








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Our Heart is about the size of a fist divided into four chambers namely two ventricles and two atria .There are one ventricle and one atrium on the left side and the other atrium and ventricle towards the right side. The ventricles are the chambers that pump blood and atria are the chambers that receive blood. The deoxygenated blood received to right atrium from:

The superior vena cava is released into the veins of the upper arms and organs.
The inferior vena cava that leaves blood from the veins of legs and lower organs.
The coronary sinus, that leaves deoxygenated blood from the heart.
The right ventricle pumps the blood to the lungs for re-oxygenation when it gets filled up by the pulmonary arteries. The right semilunar valves close and prevents the blood from the pulmonary veins after blood passes through the pulmonary arteries. Then the oxygenated blood is received by the left atrium from the lungs via pulmonary veins.
















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Hope it's helpful
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