Tissues, Organs, Organ Systems

B2.1

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Tissues

A tissue is a group of cells that have a similar

structure and function.                                        

  For Example:

  • Muscle tissue contracts so we can move
  • Glandular tissue produce substances such as enzymes and hormones
  • Epithelial tissue covers organs
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Organs

ORGANS ARE MADE OF TISSUE.

For Example, the stomach is an organ that contains:

  • Muscle tissue 
  • Glandular tissue
  • Epithelial tissue
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Organ Systems

ORGANS SYSTEMS ARE GROUPS OF ORGANS.

They carry out a particular function

For example the digestive system includes:

  • Glands, such as pancreas and salivary glands, that produce digestive juices
  • The stomach and small intestine where digesyion takes place
  • The liver, which produces bile to help break down fats
  • The small intestine, where the soluble food is absorbed into the blood.
  • The large intensine, where water is aborsbed from undigested foods, producing faeces.
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Plant Organs

Plant Organs include:

  • Stems
  • Roots
  • Leaves

Plants Tissues include:

  • Epidermal tissues, that cover the plant 
  • Mesophyll, where photosynthesis takes place
  • Xylem and Pholem that transport substances around the plant
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