complete the statement below and write your answer in your answer sheet/science activity notebook
1. major functions. first, they _____ from the blood in the urine.​


Sagot :

Answer:

filter or remove

Explanation:

not sure:>

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.