Don’t be nervous… you’re going to learn a lot! The Nervous System Don’t be nervous… you’re going to learn a lot!
Central Nervous System CNS Your brain and spinal cord As big around as your thumb Made of neurons bundled together. Passes impulses to and from brain. Protected by your vertebrae
Spinal Cord Injury Sensory information cannot get to the brain Motor messages cannot get to the body Your brain loses control of some parts of your body
Peripheral Nervous System - PNS Includes all the nerves branching off of the CNS. *The PNS uses nerves to connect all parts of your body to the CNS.
Neurons All nerves are made of neurons. Neurons are nerve cells that send electrical messages around the body. Neurons transmit electrical messages to and from the CNS, called impulses.
http://www.youtube.com/watch?v=TKG0MtH5crc
Sensory Neurons Sensory neurons sense changes in or outside your body. They use receptors to detect the changes. Sensory neurons send messages about your body or environment to the spinal cord up to the brain for interpretation.
Motor Neurons Motor neurons send impulses from the brain down the spinal cord to parts of your body. They make the body do stuff. The brain will interpret messages and send an impulse back to the body for action!
Which numbers represent sensory neurons? Which numbers represent motor neurons?
What nerve! As a class, we are going to pretend to be neurons. Let’s organize ourselves into a nerve and send messages to and from the brain!
How do neurons send messages? Neurons receive impulses on their dendrites. When a neuron receives an impulse, it passes the message along to the next neuron. The message is passed from neuron to neuron until it gets to the end of the nerve.
Make a simile and explain why your brain is like a “….” My brain is like a …… What is your brain like? Make a simile and explain why your brain is like a “….” Illustrate your page. Graded, due tomorrow!
Temporal Lobe Controls: Occipital Lobe Controls: Sounds and language The formation of memories Occipital Lobe Controls: Sight and visual stimulus Parietal Lobe Controls: Sensory information, pain pressure, heat touch Frontal Lobe Controls: Reasoning , motor skills, cognition (thinking), feelings, emotion,