Excretory System

Bayani Gaba-gaba

A stockman in Ilorin glances at the colour of a bull's urine before he checks anything else that morning: pale and free flowing means all is well, dark and scanty is an early warning. That quick habit rests on the excretory system, the kidneys, ureters, bladder and urethra that filter the blood and carry away what the body no longer needs.

In this lesson you will learn the four parts of the excretory system in the order urine actually travels, what the kidney does to blood as it passes through, and how urine is formed in three plain steps. You will also learn to tell urine and faeces apart properly, a distinction WAEC candidates lose marks on every year, and see why urine and dung together make manure one of the farmer's most valuable free resources.

Manufura

  1. Define excretion
  2. Identify the parts of the excretory system
  3. State the functions of the kidney
  4. Explain the process of urine formation
  5. State the excretory products of a farm animal

Takardar Darasi

Every cell in a farm animal's body burns food for energy, leaving behind waste, chiefly nitrogen from digesting protein. Left in the blood, that waste would poison the animal. Excretion is the removal of this waste, and the job belongs chiefly to the excretory system. A stockman who understands it can read an animal's urine the way a mechanic reads an oil gauge.

Nazarin Darasi

Barka da kammala darasi akan Excretory System. Yanzu da kuka bincika mahimman raayoyi da raayoyi, lokaci yayi da zaku gwada ilimin ku. Wannan sashe yana ba da ayyuka iri-iri Tambayoyin da aka tsara don ƙarfafa fahimtar ku da kuma taimaka muku auna fahimtar ku game da kayan.

Za ka gamu da haɗe-haɗen nau'ikan tambayoyi, ciki har da tambayoyin zaɓi da yawa, tambayoyin gajeren amsa, da tambayoyin rubutu. Kowace tambaya an ƙirƙira ta da kyau don auna fannoni daban-daban na iliminka da ƙwarewar tunani mai zurfi.

Yi wannan ɓangaren na kimantawa a matsayin wata dama don ƙarfafa fahimtarka kan batun kuma don gano duk wani yanki da kake buƙatar ƙarin karatu. Kada ka yanke ƙauna da duk wani ƙalubale da ka fuskanta; maimakon haka, ka kallesu a matsayin damar haɓaka da ingantawa.

  1. Which of the following correctly gives the order in which urine passes through the excretory system? A. Bladder, ureter, kidney, urethra B. Kidney, ureter, bladder, urethra C. Kidney, bladder, ureter, urethra D. Ureter, kidney, urethra, bladder Answer: B
  2. The main nitrogenous waste product removed from the blood by the kidney is: A. Glucose B. Urea C. Water D. Carbon dioxide Answer: B
  3. The process by which useful substances filtered out of the blood are taken back into the blood in the kidney tubule is called: A. Filtration B. Egestion C. Reabsorption D. Excretion Answer: C
  4. Which of the following is correct about faeces? A. It is filtered from the blood by the kidney B. It is formed by excretion C. It is undigested food residue removed by egestion D. It leaves the body through the urethra Answer: C
  5. A farm animal producing scanty, dark urine on a hot day is most likely: A. Overfed B. Dehydrated C. Suffering from worms D. Constipated Answer: B

Littattafan da ake ba da shawarar karantawa

Introduction to Animal Science: Global, Biological, Social and Industry Perspectives
Introduction to Animal Science: Global, Biological, Social and Industry Perspectives
Sunaƙa: Sixth edition
Mai wallafa: Pearson
Shekara: 2017
ISBN: 978-0-13-443605-0
Bayanan bayanin.: A comprehensive introduction to animal science covering anatomy and physiology, nutrition, genetics, reproduction, animal health and the major farm animal species and their production systems.
Small-scale Poultry Production: Technical Guide
Small-scale Poultry Production: Technical Guide
Mai wallafa: Food and Agriculture Organization of the United Nations
Shekara: 2004
ISBN: 978-92-5-105082-8
Bayanan bayanin.: An FAO Animal Production and Health Paper written by a Nigerian animal scientist, covering breeds, housing, feeding, incubation, disease control and marketing for small-scale poultry keepers in developing countries.
Tropical Animal Feeding: A Manual for Research Workers
Tropical Animal Feeding: A Manual for Research Workers
Mai wallafa: Food and Agriculture Organization of the United Nations
Shekara: 1995
ISBN: 978-92-5-103758-4
Bayanan bayanin.: An FAO Animal Production and Health Paper on the principles of ruminant and non-ruminant nutrition and the practical use of tropical feed resources, including crop residues and by-products, in sustainable livestock systems.