Circulatory Systems
Gbogbo ọrọ náà
Every one of your cells needs a constant delivery of oxygen and food and a constant removal of waste. With billions of cells, diffusion alone is far too slow, so animals use a circulatory system: blood, driven by a pump through a network of vessels, with valves to keep it flowing one way.
In this lesson you will learn what a circulatory system is. Extended students will compare the single circulation of a fish with the double circulation of a mammal, and discover why passing the blood through the heart twice gives mammals a real advantage.
Ebumnobi
- Describe the circulatory system as a system of blood vessels with a pump and valves to ensure one-way flow of blood
- [Supplement] Describe the single circulation of a fish
- [Supplement] Describe the double circulation of a mammal
- [Supplement] Explain the advantages of a double circulation
Nkuzi Olu
Gee ntị na nkuzi a na ngwa
Maapụ uche
E seela isiokwu a ka ị hụ otu echiche si ejikọta.
Mepee maapụ uche na ngwa
Kaadị ncheta
Omume ncheta ngwa ngwa n'ihe a na-anwale n'isiokwu a.
Mee omume kaadị ndị a na ngwa
Akwụkwọ Ọmụmụ
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Nweta ngwa Green Bridge CBT na ekwenti gi ma o bu kompiuta maka ulo akwukwo IGCSE zuru oke: akwukwo ule ndi gara aga, usoro nyocha, eserese uche, kaadi omumu na nkuzi olu.
Nnyocha Ọmụmụ
Ekele diri gi maka imecha ihe karịrị na Circulatory Systems. 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.
- A circulatory system consists of blood vessels, valves and a: A. lung B. pump C. kidney D. gill Answer: B
- [Supplement] In a single circulation, the blood passes through the heart: A. twice per circuit B. once per circuit C. three times per circuit D. never Answer: B
- [Supplement] A double circulation is found in a: A. fish B. mammal C. flatworm D. jellyfish Answer: B
- [Supplement] The main advantage of a double circulation is that blood reaches the body at: A. low pressure B. high pressure C. low temperature D. high humidity Answer: B
- Valves in a circulatory system ensure that blood: A. flows in one direction B. carries more oxygen C. moves by diffusion D. stays in the gills Answer: A
Rue ajuju ndi a n'ime ngwa ahu
Rue ajuju ndi a n'ime ngwa ahu
Akwụkwọ A Na-atụ Aro
Mụtakwuo ihe site na isi mmalite mepere emepe
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Akụkụ akwụkwọ
Overview of the Circulatory System
Describe an open and closed circulatory system
"Biology: Overview of the Circulatory System" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/biology/pages/40-1-overview-of-the-circulatory-system. Access for free at https://openstax.org/books/biology/pages/1-introduction
Ndị otu ndị ọzọ bipụtara ha n'okpuru ikike mepere emepe, anyị na-ekele ha dị ka ha si chọọ. Njikọ na-emepe saịtị ha.
Meecha Ajụjụ Ule Ọmarịcha
Ị chọrọ ime ajụjụ ule ọmarịcha gbasara Circulatory Systems? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.
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