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JC Science
JC Science
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The Circulatory System Notes

The Circulatory System

  • The circulatory system consists of the heart and the blood vessels (veins, arteries and capillaries).
  • Veins bring blood away from the heart. They have a wider lumen and thinner walls than arteries, and valves to prevent backflow... (More)

Skeleton & Muscular System – Terms

The Skeleton and Muscles

  • The functions of the skeleton are support, protection and movement.
  • Muscles are attached to bones. When they contract they alow us to move.
  • Bone is made of living cells. and calcium compounds The living part of... (More)

Digestions & Enzymes – JC Science Notes

Digestion

  • The five stages of digestion are ingestion, digestion, absorpbtion, assimilation and egestion.
  • Ingestion is the taking of food into the mouth.
  • Digestion is the breaking down of food.
  • Absorpbtion is the absorpbtion of molecules of food into the blood... (More)

Ecology – Junior Cert Science

  • Ecology is the study of the relationships of living things with one another and their environment.
  • A habitat is a place where a plant or animal lives, e.g. woodland or rocky seashore.
  • The environment is everything surrounding an organism.
  • A... (More)