Circulatory System

Resumen

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.

Objetivos

  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

Nota de la lección

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.

Evaluación de la lección

Felicitaciones por completar la lección del Circulatory System. Ahora que has explorado el conceptos e ideas clave, es hora de poner a prueba tus conocimientos. Esta sección ofrece una variedad de prácticas Preguntas diseñadas para reforzar su comprensión y ayudarle a evaluar su comprensión del material.

Te encontrarás con una variedad de tipos de preguntas, incluyendo preguntas de opción múltiple, preguntas de respuesta corta y preguntas de ensayo. Cada pregunta está cuidadosamente diseñada para evaluar diferentes aspectos de tu conocimiento y habilidades de pensamiento crítico.

Utiliza esta sección de evaluación como una oportunidad para reforzar tu comprensión del tema e identificar cualquier área en la que puedas necesitar un estudio adicional. No te desanimes por los desafíos que encuentres; en su lugar, míralos como oportunidades para el crecimiento y la mejora.

  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

Preguntas Anteriores

¿Te preguntas cómo son las preguntas anteriores sobre este tema? Aquí tienes una serie de preguntas sobre Circulatory System de años anteriores.

Pregunta 1 Informe

(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