The Nervous System Collects and responds to information – internal and external to the body
Two Parts CNS & PNS
Peripheral Nervous System (PNS) Nerves and supporting cells Collects information about the body’s internal and external environment
Peripheral Nervous System Somatic Autonomic
Neurons are Nerve Cells
Central Nervous System Brain and spinal cord Processes information and creates the response
Myelin insulates the nerve cells
Right brain / Left brain
* Be able to identify *
Phineas Gage
Nerves communicate via synapses neurotransmitters
Transmissions are electrochemical Synapse is the space between nerve cell endings Neurotransmitters are the chemicals that relay the message
Meth, alcohol, nicotine and opiates increase the release of dopamine – the body reacts by decreasing dopamine receptors.
Dopamine receptors in the Limbic Region (pleasure center)