Circulatory System
Gbogbo ọrọ náà
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.
Ebumnobi
- Define the circulatory system
- Identify the components of blood
- State the functions of the heart
- Explain the pattern of blood circulation in a farm animal
- State the functions of the circulatory system
Maapụ uche
E seela isiokwu a ka ị hụ otu echiche si ejikọta.
Kaadị ncheta
Omume ncheta ngwa ngwa n'ihe a na-anwale n'isiokwu a.
Akwụkwọ Ọmụmụ
Yi rajista ka ci gaba
Kpọpụta akaụntụ n’efu ka ị nweta ohere na ihe ọmụmụ niile, ajụjụ omume, ma soro mmepe gị.
Nnyocha Ọmụmụ
Ekele diri gi maka imecha ihe karịrị na Circulatory System. Ugbu a na ị na-enyochakwa isi echiche na echiche ndị dị mkpa, ọ bụ oge iji nwalee ihe ị ma. Ngwa a na-enye ụdị ajụjụ ọmụmụ dị iche iche emebere iji kwado nghọta gị wee nyere gị aka ịmata otú ị ghọtara ihe ndị a kụziri.
Ị ga-ahụ ngwakọta nke ụdị ajụjụ dị iche iche, gụnyere ajụjụ chọrọ ịhọrọ otu n’ime ọtụtụ azịza, ajụjụ chọrọ mkpirisi azịza, na ajụjụ ede ede. A na-arụpụta ajụjụ ọ bụla nke ọma iji nwalee akụkụ dị iche iche nke ihe ọmụma gị na nkà nke ịtụgharị uche.
Jiri akụkụ a nke nyocha ka ohere iji kụziere ihe ị matara banyere isiokwu ahụ ma chọpụta ebe ọ bụla ị nwere ike ịchọ ọmụmụ ihe ọzọ. Ekwela ka nsogbu ọ bụla ị na-eche ihu mee ka ị daa mba; kama, lee ha anya dị ka ohere maka ịzụlite onwe gị na imeziwanye.
- 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
- 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
- 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
- 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
- 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
Yi rajista ka ci gaba
Kpọpụta akaụntụ n’efu ka ị nweta ohere na ihe ọmụmụ niile, ajụjụ omume, ma soro mmepe gị.
Yi rajista ka ci gaba
Kpọpụta akaụntụ n’efu ka ị nweta ohere na ihe ọmụmụ niile, ajụjụ omume, ma soro mmepe gị.
Akwụkwọ A Na-atụ Aro
Ajụjụ Nnyocha
Nna, you dey wonder how past questions for this topic be? Here be some questions about Circulatory System from previous years.
Ajụjụ 1 Ripọtì
(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
Akọwa Nkọwa
(a) Six activities carried out in the brooding of chicks
- Providing artificial heat/warmth for the chicks with a heat source (charcoal pot, electric bulb or gas brooder).
- Supplying clean, cool drinking water in shallow drinkers.
- Providing feed (chick starter/mash) in clean feeders.
- Spreading clean, dry litter/bedding on the floor and replacing wet litter.
- Providing adequate lighting and ventilation in the brooder house.
- Vaccinating and medicating the chicks and guarding them against predators and rodents.
(b) Management practices
- Deworming: the administration of anthelmintic drugs to animals to remove or destroy internal parasites (worms) living in the digestive tract, so as to improve health and productivity.
- Culling: the removal (and disposal) of unproductive, sick, deformed or unwanted birds from the flock so that only healthy, productive birds are kept.
- Debeaking: the trimming of part of the upper (and sometimes lower) beak of birds to prevent cannibalism, feather pecking, egg eating and feed wastage.
- Delousing: the treatment of birds with insecticides/pesticides to destroy external parasites such as lice and mites.
(c) Four signs of ill health in poultry
- Dullness and reduced activity, with the bird often isolating itself from the flock.
- Loss of appetite and reduced feed and water intake.
- Ruffled or rough feathers and a drooping appearance.
- Sudden drop in egg production, and diarrhoea with a soiled vent.
(d) Two organs of the circulatory system of farm animals
- The heart.
- The blood vessels (arteries, veins and capillaries).