Page 50 - General and Inorganic Chemistry for Advanced Secondary Schools Students Book Form Five and Six
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Biology for Secondary Schools
An organ system is made up of organs
that work together to perform a certain
Dense function. Examples of systems are
connective
tissue respiratory system, digestive system,
Loose Cartilage reproductive system, hormonal system,
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connective tissue
tissue skeletal system, and blood circulatory
system. For example, the blood
circulatory system transports blood to
all parts of the body. It consists of the
heart, blood vessels, and blood itself.
Most multicellular organisms are made
up of different organ systems working
together. Therefore, there is special
Adipose Blood
tissue tissue organisation from the cell to tissue,
Bone
tissue tissue to organ, organ to organ system
to organism. Figure 3.9 shows an
Figure 3.7: Examples of animal tissues
example of organ system in the human
An organ consists of different tissues body.
that work together to perform a certain
function. Animal organs include the
heart, liver, stomach, and brain. Plant
organs include the stem, flowers, fruits, Heart
leaves, and roots. Figure 3.8 shows an
example of a plant organ.
Blood vessels
Figure 3.9: The human blood circulatory
Figure 3.8: A flower
system
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