Cirkulationssystemet
s. 145 – 150
1. Vilken funktion har blodomloppet samt hjärta?
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2. Vad innefattar blodkärlssystemet?
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3. Rita upp blodomloppet samt ange det lilla respektive stora kretsloppet.
4. Beskriv i ord det lilla kretsloppet?
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5. Hjärtat förser kroppen med näring och syre via blodkärlssystemet, men hur får hjärtat
nödvändig energi och syre?
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6. Förklara artärer, kapillärer samt vener.
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7. Beskriv hur muskelvävnaden är fördelad mellan förmak och kammare?
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8. Vad menas med slagvolym respektive minutvolym?
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9. Förklara blodets väg från höger förmak till aortan.
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10. Vad kallas hjärtats arbetsfas och vad innebär arbetsfasen egentligen?
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11. Vad kallas hjärtats vilofas och vad innebär detta egentligen?
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12. Varför uppstår det karaktäristiska ljudet du-dunk, du-dunk?
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13. Vad menas med blodtryck?
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14. Vad har elasticiteten i artärerna för betydelse?
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15. På vilka sätt kan människan påverka sitt blodtryck? (Power-Point)
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16. Vad menas med muskelpumpen? (Power-Point)
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