Appendix B Psy 240

University of Phoenix Material

Appendix B

Structures of the Nervous System

This activity will increase your understanding of the different structures of the nervous system and brain. During the Web activity, you will view a variety of structures of the brain and nervous system and label each with the appropriate term. You will use this document to write a description for the terms you used in the activity.

As you conduct the Structures of the Nervous System activity, follow along with this Word document and fill in the descriptions of those terms you used to label the structures. All of the terms in the activity are listed here, but you only need to provide descriptions for those you used.

Term | Description |

Central nervous system | The nervous system located within the skull and spine. |

Cell body | The metabolic center of the neuron. Its also called the soma. |

Peripheral nervous system | The nervous system located outside the skull and spine. |

Dendrites | Short processes emanating from the cell body, which receive most of the synaptic contacts from other neurons. |

Somatic nervous system | |

Axon | Long narrow process that projects from cell body |

Buttons | Button like endings which release chemicals into synapses. |

Autonomic nervous system | |

Synapses | Gaps between adjacent neurons which chemicals are transmitted. |

Dura mater meninx | Tough membrane-the outer meninx |

Mesencephalon | Has two divisions, tectum and tegmentum. The tectum works with auditory and visual (inferior and superior colliculi). |

Arachnoid meninx | Spider web-like membrane |

Cerebrospinal fluid | Protects the CNS, and fills the subarachnoid space |

Diencephalon | Has two structures-thalamus and hypothalamus.Thalamus is a two lobed structure that makes up the top of the brain stem.Hypothalamus is located below the anterior thalamus. It plays a main role in behaviors such as eating, sleeping, and sex. |

Pia mater meninx | Innermost...