Science - Combined - 0653 CIE

Circulatory Systems

Bayani Gaba-gaba

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.

Manufura

  1. [Core] Describe the circulatory system as a system of blood vessels with a pump and valves to ensure one-way flow of blood

Darasin Sauti

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Taswirar tunani

An zana wannan batu don ka ga yadda ra'ayoyi ke hadewa.

Bude taswirar tunani a cikin manhaja

Katunan tunawa

Gwaji mai sauri kan abin da ake jarraba a wannan batu.

Yi atisayen wadannan katuna a cikin manhaja

Takardar Darasi

A circulatory system is what lets a large, active animal stay alive: it moves materials far faster than diffusion could. Comparing fish and mammal circulation is a favourite Extended question because it rewards clear reasoning about blood pressure, so the logic here turns directly into marks.

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Nazarin Darasi

Barka da kammala darasi akan Circulatory Systems. 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. A circulatory system consists of blood vessels, valves and a: A. lung B. pump C. kidney D. gill Answer: B
  2. [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
  3. [Supplement] A double circulation is found in a: A. fish B. mammal C. flatworm D. jellyfish Answer: B
  4. [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
  5. 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

Yi aikin wadannan tambayoyi a cikin manhaja

Yi aikin wadannan tambayoyi a cikin manhaja

Yi Aikin Tambayoyin Gwaji

Kana son yin aikin tambayoyin gwaji kan Circulatory Systems? Sauke manhajar Green Bridge CBT don samun tambayoyin gwaji da cikakkun jarrabawa akan wannan batu.

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