BIOS 252 Week 3 Nervous System-Spinal cord, PNS, and reflexes - Lab

Learning Objectives: ● Locate and identify the regions and parts of the spinalcord. ● Identify the spinal contributions to cervical, brachial, lumbar, sacral andcoccygeal plexuses. ● Locate and identify major peripheralnerves. ● Identify the components of a reflexarc. Introduction: The spinal cord is a continuation from the medulla oblongata of the brain stem. It allows communication between the brain and the rest of the body. The spinal nerves contain both sensory and motor fibers. We will see that multiple spinal cord levels can contribute to the formation of a peripheral nerve as fibers pass through the various plexuses. The protective role of a reflex arc will be examined. Assignment: Part 1: Complete the following activities Anatomy.TV: Nervous System- Spinal cord, Spinal nerves, Reflexes To access Anatomy.TV: Resources tabLibraryLibrary Resources-Database A- ZAnatomy.TVTitles(default tab): Choose Nervous systemchoose assigned sections You will then work through the material and activities by scrolling down on the right. This will allow you to see and work through all activities for that section. Have the lab report with you as you complete the activities so you may record data. Part 2: Complete the lab report Week 3 Nervous System Lab Report 1. Describe the anatomy of the spinal cord by completing the following chart: (3points) 2. Define the following terms: (1 pointeach) • Cauda equina • Conus medullaris • Reflex 4. Describe a reflex arc including the 5 components. (5points) 5. Describe the reflex response to a painful stimulus such as stepping on a nail. (2points) 6. Discuss why a person who has a spinal cord injury at C6 is spared from needing a ventilator. In order to answer you must consider what nerve innervates the diaphragm and which spinal cord segments contribute to this nerve. (2points)