The Nervous System By: Marlayna Botello, Taylor Gersbach, John Salvesen, Ryan Estrada.

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Presentation transcript:

The Nervous System By: Marlayna Botello, Taylor Gersbach, John Salvesen, Ryan Estrada

The Nervous System ► The Nervous system an organ system containing a network of neurons that send emotion reactions and functions from the body to the brain.

Major facts about the Nervous System ► Senses from inside the body to the brain and back again. ► Electric signals through the spinal cord. ► Sends messages from senses (nerves) to brain to process through neurons.

Major parts of the Nervous system The Brain: process signals / feelings outside and inside the body, and sends out signals for reactions/ movement. Nerves is like a highway along the spinal cord. Spinal Cords: are like a signal highway Neurons send signals from touch to react.

Nerve impulse From the sight of the stimuli, the nerve travels trough the body and up the spinal cord towards the brain, which then transmits and processes information.

How the body system works ► Nervous system is the function of everything. ► It sends signals notify the brain to react to the situation. ► Reflexes, movement, muscles, everything!

4 Facts about the Nervous system ► The average adult human brain weighs 1.3 to 1.4 kg (Approximately 3 Lbs)!!! ► A stegosaurus dinosaur weighed approximately 1600kg but bad a brain that only weighed 70g (.07 kg)

More Facts ► The fastest brain reaction recorded was 100 m/s. ► A child in the womb develops neurons at a rate of 250,000 neurons per minute.

Synapses ► Electrical Synapses ► Direct electrical connections ► Faster than chemical reactions. ► Happens between neurons ► Chemical synapses ► Common and have a circuit ► Happens between neuron cells and other cells throughout the body.