Organisms and Their Environments Sensory Organs Life Science

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Organisms and Their Environments
Sensory Organs

• Life Science

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What are senses?

• Tell animals what they need to know about their
  environment
• All environmental signals involve a receptor
  organ.

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What are sensory organs?

• Sensory organs are any part of the body
  receives signals from the environment.
• They help to keep them out of danger and enable
  them to find food or shelter.

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Human Senses

• Seeing
• Hearing
• Tasting
• Smelling
• Touching

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Seeing

• Accomplished using eyes
• The eye is an almost spherical organ.
• The eye is protected by bones in the skull.
• The eye is responsible for detecting colors,
  shapes, sizes, and space by receiving light.

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Seeing
Other animals eyes may differ in type, number,
and in location on the body.

• Behaviors Related to this Sense...
• Locate food or shelter
• Recognize objects or other organisms

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Hearing

• Accomplished using ears
• The ear is located on either side of the head.
• The ears receives sound vibrations from the
  environment.

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Hearing
Other animals hearing organs may differ in type
and in location on the body.

• Behaviors Related to this Sense...
• Locate food
• Sense danger to escape enemies
• Communication

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Tasting

• Accomplished using the taste buds located on the
  tongue.
• Examples of tastes that humans can detect are...
• Salty
• Sweet
• Bitter
• Sour

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Tasting
Other animals taste organs may differ in type
and in location on the body.

• Behaviors Related to this Sense...
• Judge which foods are okay to eat

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Smelling

• Accomplished using the nose
• Humans react to different smells in the
  environment in different ways.

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Smelling
Other animals smelling organs may differ in type
and in location on the body.

• Behaviors Related to this Sense...
• Avoid danger
• Find food
• Recognize other organisms

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Touching

• Accomplished using the skin
• The skin can detect 5 different types of
  sensations
• touch
• pressure
• cold
• pain
• heat

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Touching
Other animals touching organs may differ in type
and in location on the body.

• Behaviors Related to this Sense...
• Identify food
• React to dangerous situations
• Care for each other

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In general, every animal has the senses it needs
for its own environment and way of life.
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Other Animals Senses

• Some other animals need different information
  about the world to survive, so they have senses
  that can be different from humans.
• echolocation in bats
• night (infrared) vision in some snakes
• electric senses of rays and sharks
• magnetic senses of migratory birds (pigeons),
  butterflies, and some whales

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Echolocation in Bats
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Night Vision of Some Snakes
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Electric Senses of Rays and Sharks
Go to the following website http//www.seaworld.o
rg/animal-info/info-books/sharks--rays/senses.htm

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Magnetic Sensesof migratory birds, butterflies,
and some whales
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Organisms and Their Environments
Sensory Organs

• Life Science