Psy 240 Appendix B

Psy 240 Appendix B - Axia College Material Appendix B...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Axia College 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 Central nervous system is made up of two parts the brain and the spinal cord. Central nervous system functions consist of coordinating the behavior involving diverse parts of the human body. Working in collaboration with the peripheral nervous system, central nervous system plays a fundamental role in controlling the activities in assorted multicellular organisms (Naik, 2010, para 2). Cell body The cell body (soma) is the unit of the neuron. It makes all the proteins for the dendrites, axons and synaptic terminals and contains specific organelles such as the mitochondria, Golgi apparatus, endoplasmic reticulum, secretory granules, ribosomes and polysomes to provide energy and make the parts, as well as a production line to assemble the parts into completed products (Cardoso, PhD, 2010, para 1). Peripheral nervous system Peripheral nervous system can be found outside the skull and spine of the human body. The Peripheral Nervous System consists of 31 pairs of Spinal Nerves that join the spinal cord with the rest of the body and 12 pairs of Cranial Nerves, which unite the brain with crucial organs of the human body. The nerves of peripheral nervous system attach the CNS to muscles, glands, blood vessels and all the organs of the body counting the sense organs. The function of this nervous system is to carry messages from the brain to all the other parts of the body, and back from these parts to the brain and the spinal cord (Bose, 2010, para 1-3). Dendrites The Dendrites spread away in treelike manner and provide as the foremost equipment for getting signals from other nerve cells. The Dendrites act as an "antennae" of the neuron and are enclosed by thousands of synapses. The dendritic membrane under the synapse (the post-synaptic membrane) has several specific protein molecules called receptors that notice the neurotransmitters in the synaptic cleft. A nerve cell can have various dendrites, which may branch out countless times, their exterior is irregular and covered in dendritic spines which are where the synaptic input links are made (Cardoso, PhD, 2010, para 15). Somatic
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/26/2011 for the course PSY 240 taught by Professor Colina during the Spring '10 term at University of Phoenix.

Page1 / 4

Psy 240 Appendix B - Axia College Material Appendix B...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online