Sagot :
Answer:
kidney
Explanation:
The kidneys act as very efficient filters for ridding the body of waste and toxic substances, and returning vitamins, amino acids, glucose, hormones and other vital substances into the bloodstream. The kidneys receive a high blood flow and this is filtered by very specialised blood vessels.
The Kidneys – a Basic Guide
• Most people have two kidneys, which are organs shaped like
kidney beans, each one about 10-15cms long, located either
side of the spine, deep in the abdomen. However, it is possible
to live a healthy and active life with only one functioning kidney.
In rare instances people can be born with three kidneys, and
likewise remain healthy.
• Their main job is to cleanse the blood of toxins and transform
the waste into urine.
• Each kidney weighs about 160 grams and gets rid of between
one and one-and-a-half litres of urine per day. The two kidneys
together filter 200 litres of fluid every 24 hours.
When the kidneys are not working properly, harmful toxins and excess
fluids build up in the body, which may cause the symptoms of kidney
failure. These symptoms can include high blood pressure, extreme
tiredness or lethargy, persistent headaches, swelling in the face and
ankles, fluid retention and / or lower back pain.