ANIMAL SENSES

Animals { Sensory Organs } ANIMAL SENSES { Sensory Organs } Animals, including humans, have sensory organs that allow them to detect changes in their environments. CLASSIFYING Animals

{ Sensory Organs & Behaviors } ANIMAL SENSES { Sensory Organs & Behaviors } After these changes are detected, the organism responds with certain behaviors. A behavior is a response to a change in the environment. CLASSIFYING Animals

Animals { Sensory Organs } ANIMAL SENSES Senses tell animals what they need to know about their environment. Sensory Organs are any part of the body that receives signals from the environment. They help to keep them out of danger and enable them to find food and shelter. CLASSIFYING Animals

ANIMAL SENSES : Sensory Organs Many animals have the same type of sense organs as humans. CLASSIFYING Animals

ANIMAL SENSES: Sensory Organs In some cases, animals do not have all the sense organs that humans have. CLASSIFYING Animals

Animals ANIMAL SENSES : SIGHT Signals Detected Detects color, shapes, sizes, space, distance, light, and movement. Examples of Sensory Organs Humans have eyes. Other animals’ eyes may differ in type, number, and in location on the body. Examples of Behaviors Locate food or shelter. Recognize objects or other organisms. CLASSIFYING Animals

Animals ANIMAL SENSES : SIGHT SENSE-SATIONAL FACTS Your eyes are closed at least 30 minutes a day just from blinking. Owls can see a mouse moving over 150 feet away with light no brighter than a candle. A chameleon's eyes can look in opposite directions at the same time. A newborn baby sees the world upside down because it takes some time for the baby's brain to learn to turn the picture right-side up. One in every twelve males is color blind. CLASSIFYING Animals

ANIMAL SENSES : HEARING Signals Detected Receives vibrations and detects sound. Examples of Sensory Organs Humans have ears. Other animals’ hearing organs differ in type and in location on the body. Examples of Behaviors Locate food. Sense danger to escape enemies. Communications. CLASSIFYING Animals

ANIMAL SENSES : HEARING SENSE-SATIONAL FACTS Children have more sensitive ears than adults. They can recognize a wider variety of noises. Dolphins have the best sense of hearing among animals. They are able to hear 14 times better than humans. An earache is caused by too much fluid putting pressure on your eardrum. Earaches are often the result of an infection, allergies or a virus. When you go up to high elevations, the change in pressure causes your ears to pop. CLASSIFYING Animals

Animals ANIMAL SENSES : TASTE Signals Detected Detect flavors Humans detect salty, sweet, bitter, and/or sour tastes. Examples of Sensory Organs Humans have taste buds on tongues. Other animals’ taste organs differ in type and in location on the body. Examples of Behaviors Judge which foods are okay to eat. CLASSIFYING Animals

Animals ANIMAL SENSES : TASTE SENSE-SATIONAL FACTS We have almost 10,000 taste buds inside our mouths; even on the roofs of our mouths. Insects have the most highly developed sense of taste. They have taste organs on their feet, antennae, and mouthparts. Fish can taste with their fins and tail as well as their mouth. In general, girls have more taste buds than boys. CLASSIFYING Animals

Animals ANIMAL SENSES : SMELL Signals Detected Detects odors. Examples of Sensory Organs Humans have a nose. Other animals’ smelling organs differ in type and in location on the body. Examples of Behaviors Avoid danger. Find food. Recognize other organisms. CLASSIFYING Animals

Animals ANIMAL SENSES : SMELL SENSE-SATIONAL FACTS Dogs have 1 million smell cells per nostril and their smell cells are 100 times larger than humans! People who cannot smell have a condition called Anosmia. If your nose is at its best, you can tell the difference between 4000-10,000 smells! As you get older, your sense of smell gets worse. Children are more likely to have better senses of smell than their parents or grandparents. CLASSIFYING Animals

Animals ANIMAL SENSES : TOUCH Signals Detected Detects shapes, size, temperature, texture, pain, vibrations, and pressure. Examples of Sensory Organs Humans have a skin. Other animals’ touching organs differ in type and in location on the body. Examples of Behaviors Identify food. React to dangerous situations. Care for each other. CLASSIFYING Animals

Animals ANIMAL SENSES : TOUCH SENSE-SATIONAL FACTS You have more pain nerve endings than any other type. The least sensitive part of your body is the middle of your back. Shivering is a way your body has of trying to get warmer. There are about 100 touch receptors in each of your fingertips. CLASSIFYING Animals

Animals { Sensory Organs } ANIMAL SENSES In general, every animal has the senses it needs for its own environment and way of life. However, some animals need different information about the world to survive. They have senses very different from humans. CLASSIFYING Animals

Animals { Sensory Organs } ANIMAL SENSES Examples of senses very different from humans (pictures on next slide). Echolocation in bats. Night vision of some snakes. Electric senses of rays and sharks. Magnetic senses of migratory birds, butterflies, and some whales. CLASSIFYING Animals

ANIMAL SENSES: Sensory Organs CLASSIFYING Animals

How do humans and animals use their senses? Focus Question How do humans and animals use their senses?