THE 5 SENSES

THE NERVOUS SYSTEM

• The nervous system is a network of nerve cells that transmit nerve impulses.
• It consists of the brain, spinal cord, sensory organs, & all of the nerves that connect them to the body.
• Central nervous system is made up of the brain & spinal cord.
• Peripheral nervous system is made up of all the nerves outside of the central nervous system.

WHY IS THE NERVOUS SYSTEM IMPORTANT?

• The nervous system tells our body when something occurs.
• It helps the 5 senses occur.
• It helps the parts of the body communicate with each other.

THE NERVOUS SYSTEM

THE WAYS WE USE OUR NERVOUS SYSTEM

• Breathing
• Stressing
• Sweating
• Digestion
• Heartbeat

THE 5 SENSES

• The 5 senses are sight, taste, smell, touch, & hear.
• They are essential to everyday living.
• They let your brain know what is going on around you.
• They warn you during danger.

SIGHT

• Sight helps us see where we are going.
• Sight is the most important sense.
• Sight helps us gather light.
• Images are sent upside down, but our brain makes sense of what it receives by turning it right side up.
• The brain uses the images from 2 eyes to create a 3D image.

TASTE

• Taste comes from the taste buds on our tongue.
• The tongue is able to taste 4 flavors: salty, sweet, sour, & bitter.
• It picks up texture and temperature in your food.
• Taste buds send a signal to our brain to determine if our food is safe.

SMELL

• Our sense of smell is able to identify 7 sensations: camphor, musk, flower, mint, ether, acrid, and putrid.
• Smell is important to be able to taste.
• We never experience the same smell twice.
• Dogs have the strongest sense of smell.