Nervous Endocrine Systems by 84jUV1

VIEWS: 14 PAGES: 4

									Bio 110 Outline – The Nervous & Endocrine Systems

   A. Control of Homeostasis

      1. Nervous System


      2. Endocrine System


   B. Basic Nervous Circuit – the Reflex Arc
      1. Sensory Neurons


      2. Interneurons


      3. Motor Neurons



   C. The Neuron & Action Potential
         a. Neuron (nerve cell)
                      a. Cell Body (cyton)

                        b. Dendrites

                        c. Axon

                        d. Myelin Sheath & Schwann Cells

                        e. Terminal Branches

          b. The Action Potential (Impulse or “Firing” of a Nerve Message)
                  1. Change in Electrical Charge of Axon



                   2. Involves Active Transport & Uses Energy



                   3. Importance of Myelin



          c. Neuron to Neuron Communication
                  1. Synapse
               2. Neurotransmitters



               3. Impulse speed



      d. Message Strength
             1. All or None Principle


               2. Stimulus intensity




D. Organization of the Nervous System
      a. Central Nervous System


      b. Peripheral Nervous System



               1. Ganglia


               2. Somatic Nervous System


               3. Autonomic Nervous System


                    a. Sympathetic Nerves


                    b. Parasympathetic Nerves


E. The Central Nervous System (Brain & Spinal Cord)
      a. Protected by


      b. Spinal Cord
              1. Function

               2. Grey & White Matter
      c. The Brain
              1. Cerebrum




               2. Cerebellum



               3. Medulla (oblongata)


F. The Endocrine System
      a. Endocrine Glands & Hormones


      b. Transport Through Bloodstream & Target Tissue


      c. Examples
             1. Pancreas & Blood Glucose Control



               2. Negative Feedback



     secretion of              causes


                       glucose
                       increases
                                     normal
                                   blood glucose

                       glucose
     secretion of        decreases


                               causes



               3. Positive Feedback (Oxytocin & Labor)



      d. Hypothalamus & the Pituitary Gland
1. Releasing Factors



2. Pituitary Hormones

								
To top