Do Now: Take out notebook and pencil Start a new Do Now page on page At top of page write Do Nows for week of 1/29 Give me an example of where you would one of EACH type of muscle type in the body

Engage Video

Essential Questions What is the main function of the nervous system? What are the main organs in the nervous system?

Nervous System A pathway in which your brain sends and receives info about what is happening in and around the body Main organs are: brain, spinal cord, and nerves (made of neurons) Consists of 2 systems: Central and Peripheral Nervous system

Central Nervous System Made up of brain and spinal cord Brain controls all body functions by sending and receiving messages up and down spinal cord through the nerves

Brain Soft spongy mass of nerve cells Made up of 3 parts that work together but have different functions Cerebrum (red, green, yellow, blue) Cerebellum (purple) Brain Stem (gray)

Cerebrum Largest part of brain that uses information from our senses to tell us what is going on and how to respond Divided into 4 lobes- Frontal- reasoning, planning Parietal- movement, balance Occipital- visual processing Temporal- auditory, memory

Cerebellum Located under the cerebrum in back of brain Controls balance and complex actions like walking

Brainstem Connects brain to spinal cord Controls hunger and thirst, as well as body temperature, blood pressure, and breathing

Spinal Cord Important structure that acts as an interstate between the brain and body Forms 31 pairs of spinal nerves that contain motor and sensory fibers sending information from brain to body and body back to brain, important for all body movements and function

Peripheral Nervous System Carries messages to and from body to the central nervous system through nerves Carries out orders from the brain Made of 2 systems Somatic and Autonomic Nervous Systems Nervous System Peripheral Nervous System Somatic Nervous System Autonomic Nervous System Central Nervous System

Somatic Nervous System Sends info through nerves to the central nervous system from your senses and sends info back to your senses in order for them to respond Example: Putting your hand on something hot and causing you to pull away

Autonomic Nervous System Makes sure involuntary processes in your body work automatically without thinking Breathing, digesting, heart beating

Neurons (Nerve Cells) Carry messages through an electrochemical process Brain contains 100 billion neurons Messages are carried to and from central and peripheral nervous systems through nerves (bundles of neurons)

Anatomy of a Neuron Soma- cell body Dendrites- brings signals towards the soma Axon- takes information away from the soma Synapse- a gap that separates axon of one cell and dendrite of another cell, messages or impulses crosses the synapse

Different Neurons Sensory Neurons- carries impulses to spinal cord and brain from a muscle or gland Interneuron- found in spinal cord, acts as a connector Motor Neuron- nerve that carries impulses from the brain or spinal cord back to a muscle or gland, causes muscle to move or gland to produce hormones

Nervous System Video and Discussion

Student Choice Activity Choose one of the following: A Rebus Story- Tell me a story about how a nerve impulse travels through the nervous system. Be sure to draw a picture in place of major words. Song/Rap- Write a song or rap about the nervous system to help people remember its parts. Nothing inappropriate Tri-Fold Brochure- on the three inside panels include information about all of the parts of the nervous system. HAS TO INCLUDE PICTURES AND COLOR!!!