Activity 1.7 - How does the water travel through our body after drinking?

• Students express in their own words what is going on with water in the picture.
• They will propose verification of their answers from the literature or the Internet sources.
• They will verify and evaluate their answers.

• Worksheet, working text, or other literature

Students will be provided with worksheet tasks. They will define answers to all tasks. After that they will suggest verifying the accuracy through the answers found in other sources, such as literature or Internet sources. These sources will be offered to them. These could be e.g.: Jelínek, Zicháček – Biologie pro gymnázia, Kočárek – Biologie člověka, Novotný, Hruška – Biologie člověka pro gymnázia in the Czech language or other similar sources in the mother tongue of the students.

Solutions to worksheet:

What happens to water in this part of the organism?

Picture A – Food and water are taken through the mouth and continue into the pharynx and oesophagus.

Picture B – Water is fed into the stomach from the oesophagus, and together with food it continues into the small intestine.

Picture C – Water is fed from the stomach into the small intestine where it is absorbed. A smaller portion of water is also absorbed in the colon.

Picture D – Small catheters enter each villus and absorb water and nutrients. Tiny blood vessels then enter the larger vessels and distribute nutrients with water along the body.

Picture E – The renal artery supplies blood into the kidney where it is cleaned of waste products; nutrients and water are re-absorbed and discharged back into the body by the kidney vein.

Picture F – Nephron is the basic unit of the kidney. In the glomerulus the primary urine is formed by filtration of blood. From it, in other parts, water and other necessary substances are absorbed and the final urine is produced and drained from the kidney.

Picture G – Urine is supplied to the bladder by ureters from the kidneys and then it continues through the urethra out of the body.

* The working text, see the worksheet for students.

• Students formulate their own questions. A large amount of questions arise through this activity.