The Nervous System & the Special Senses Chapter 8 – pages 271 to 296 Chapter 7 - pages 222-266 Objectives: 1. Nervous System a. b. c. d. Show the major regions of the brain and describe their functions. Draw and label a neuron, describe its parts, and explain their classification. Outline the steps of a nerve impulse, and its conduction from one neuron to the next. Describe how neurotransmitters are responsible for neuron communication. 2. Special Senses a. Describe how each of the senses responds to different types of stimuli. “The Eye and Vision” b. Identify the structures of the eye, and describe their functions. c. Compare and contrast the structure and functions of cones and rods. “The Ear: Hearing and Balance” d. Identify the divisions of the ear, their structures, and the functions of each. e. Describe how the equilibrium organs maintain balance f. Explain the function of the organ of Corti. “Chemical Senses: Taste and Smell” g. Describe the location, structure, and function of the olfactory and taste receptors. h. Name the FIVE basic taste sensations and list factors that modify the sense of taste. Assessments: NIH Activities: The Brain: Understanding Neurobiology through Addiction Brain Dissection Action Potential Model Nervous Group Stations Nervous Root Quiz Senses Lab Stations Activity Eye Dissection Senses Root Quiz Nervous System and Senses Test Anchors Available for EACH of the Nervous and Senses Chapters: Incredible Journey At the Clinic questions Scavenger Hunt Nervous Review The Meninges And others…please check in class when you have extra time! 11 parts (see wiki) Outline the steps of a nerve impulse, and its conduction from one neuron to the next. (Action potential) - - - - - Outline the steps of a nerve impulse, and its conduction from one neuron to the next. (How neurons communicate across a synapse). - - - - Objective 6: Show the major regions of the brain and describe their functions. Cerebral hemispheres Structure “Areas” Functions Grey Matter White Matter Diencephalon Thalamus Hypothalamus Epithalamus Brain stem Midbrain Pons Medulla oblongata Cerebellum “The Eye and Vision” - Identify the structures of the eye, and describe their functions. For Protection… Conjunctiva Lacrimal Apparatus Properties of Lacrimal Fluid 3 Layers of the Eye Fibrous Tunic Sclera Cornea Choriod 2 Modifications Cilliary Body Iris Sensory Tunic = ____________ Compare and contrast the structure and functions of cones. Rods Cones More Eye Structures: Lens Eye Fluids Aqueous Humor Vitreous Humor How is light focused on the retina? “The Ear: Hearing and Balance” Identify the divisions of the ear, their structures, and the functions of each. Middle Ear Bones: Inner Ear Explain the function of the organ of Corti. Organ of Corti Trace the path of sound through the ear… “Chemical Senses: Taste and Smell” Describe the location, structure, and function of the olfactory and taste receptors. Smell Taste The tongue is covered with projections called papillae… - - - Name the FIVE basic taste sensations and what substances trigger them. 1. 2. 3. 4. 5.