Circulatory System

Übersicht

Press a finger against the gum of a healthy goat and the pink returns almost at once. Do the same to a goat heavy with barber's pole worm and the gum stays pale, sometimes almost white, because there is barely enough blood left to colour it. That single check, used by herders across Nigeria long before it had a name, is a direct reading of the circulatory system: the blood, the heart that drives it, and the vessels that carry it to every living cell in the body.

In this lesson you will learn what blood is actually made of and what each component does, how the four-chambered heart works as a double pump, and why farm animals run a double circulation, one loop to the lungs and one loop to the body, rather than a single loop. You will finish able to read pale gums, a racing pulse or a bleeding wound the way an experienced stockman does: as signals from a system you now understand.

Ziele

  1. Define the circulatory system
  2. Identify the components of blood
  3. State the functions of the heart
  4. Explain the pattern of blood circulation in a farm animal
  5. State the functions of the circulatory system

Lektionshinweis

A dealer in Jos buys a flock of sheep and notices, three weeks later, that several are weak, breathless after light exercise, and pale around the eyes and gums, though nothing external is wrong. What is failing is the circulatory system, the transport network of blood as the carrier fluid, the heart as the pump, and blood vessels as the pipes. Nothing an animal eats, breathes or fights off reaches its cells without passing through it, so a stockman who understands it reads trouble early.

Unterrichtsbewertung

Herzlichen Glückwunsch zum Abschluss der Lektion über Circulatory System. Jetzt, da Sie die wichtigsten Konzepte und Ideen erkundet haben,

Sie werden auf eine Mischung verschiedener Fragetypen stoßen, darunter Multiple-Choice-Fragen, Kurzantwortfragen und Aufsatzfragen. Jede Frage ist sorgfältig ausgearbeitet, um verschiedene Aspekte Ihres Wissens und Ihrer kritischen Denkfähigkeiten zu bewerten.

Nutzen Sie diesen Bewertungsteil als Gelegenheit, Ihr Verständnis des Themas zu festigen und Bereiche zu identifizieren, in denen Sie möglicherweise zusätzlichen Lernbedarf haben.

  1. Which component of blood is mainly responsible for carrying oxygen around the body? A. Plasma B. Red blood cells C. White blood cells D. Platelets Answer: B
  2. The chambers of the heart that receive blood returning to the heart are called the: A. Ventricles B. Valves C. Atria D. Arteries Answer: C
  3. The circulation of blood between the heart and the lungs is known as: A. Systemic circulation B. Pulmonary circulation C. Double circulation D. Portal circulation Answer: B
  4. Which blood component is chiefly responsible for clotting and stopping blood loss from a wound? A. Plasma B. Red blood cells C. White blood cells D. Platelets Answer: D
  5. A farm animal with pale gums, weakness and a raised heart rate is most likely suffering from: A. Overheating B. Anaemia C. Bloat D. Constipation Answer: B

Empfohlene Bücher

Introduction to Animal Science: Global, Biological, Social and Industry Perspectives
Introduction to Animal Science: Global, Biological, Social and Industry Perspectives
Untertitel: Sixth edition
Verleger: Pearson
Jahr: 2017
ISBN: 978-0-13-443605-0
Beschreibung: 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
Verleger: Food and Agriculture Organization of the United Nations
Jahr: 2004
ISBN: 978-92-5-105082-8
Beschreibung: 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
Verleger: Food and Agriculture Organization of the United Nations
Jahr: 1995
ISBN: 978-92-5-103758-4
Beschreibung: 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.

Frühere Fragen

Fragen Sie sich, wie frühere Prüfungsfragen zu diesem Thema aussehen? Hier sind n Fragen zu Circulatory System aus den vergangenen Jahren.

WAEC SSCE - Animal Husbandry - 2021

Frage 1 Bericht

(a) State 6 activities that could be carried out in the brooding of chicks

(b) Explain each of the following management practices in poultry production
i. deworming
ii. culling
iii. debeaking
iv. delousing

(c) State four signs of ill health in poultry

(d) Mention to organs in the circulatory system of farm animals

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