Nervous System
Root Words
Neurons Units of nervous system that transmits information in the form of electrochemical changes
Dendrites: Receive electrochemical signals
Dendrites: Receive electrochemical signals Axons: Extensions that send information
Dendrites: Receive electrochemical signals Axons: Extensions that send information Synapse: The junction between two communicating neurons
Dendrites: Receive electrochemical signals Axons: Extensions that send information Synapse: The junction between two communicating neurons Myelin Sheaths: Fatty coating around Axon that insulates and increases rate of transition
Central Nervous System (CNS)
Central Nervous System (CNS) Consisting of Brain and Spinal cord
Peripheral Nervous System (PNS)
Peripheral Nervous System (PNS) Consists of peripheral nerves that sends message back to CNS
Peripheral Nervous System (PNS) Consists of peripheral nerves that sends message back to CNS 2 parts: Somatic Autonomic
Brain Teaser A H I M N O T U V W Which of the letters above does not belong with the rest? N It is not a mirror-image of itself
Brain Teaser There is a town where 5% of all the people living there have unlisted phone numbers. If you selected 100 names at random from the town’s phone directory, on average, how many of these people would have unlisted phone numbers? 0 They would not be in the phone book if their number was unlisted
The Central Nervous System 1. The brain b. Divided into three main parts: cerebrum, cerebellum, brain stem
The Central Nervous System 3. Four lobes (parts) of the cerebrum a. Frontal Lobe –use of language b. Parietal Lobe – sensory information, including feelings of heat, cold, pain, touch c. Occipital Lobe – Controls sense of sight d. Temporal – sense of hearing and smell
Brain Diagram Using figure 35-10 on page 902, create a brain diagram. Color code each of the four lobs Describe each lobe Draw an illustration that represents each lobe function