HUMAN ANATOMY ANDPHYSIOLOGYLAB – 10 (Ex. 15)Exercise 14.1 and 15:Overview of Cell Types in Nervous TissueThe Brain and Cranial NervesLAB Bio 203
Exercise 15 The Brain and Cranial Nerves:Learning Outcomes1.Activity 5.10 Perform microscopic observation of the neuron structure;summarize functions of neurons in nervous (neural) tissue.2.Activities 15.1–15.4 Dissect and identify the major anatomical structureson the human brain and compare its structure with that of a sheep brain.3.Activity 15.5 Identify the brain ventricles and describe the flow ofcerebrospinal fluid.4.Activity 15.7 Locate the origins of the cranial nerves on the brain.5.Activities 15.8–15.10 Evaluate the functions of the cranial nerves.6.Activity 15.11 Identify the openings in the skull through which the cranialnerves exit the cranial cavity.Exercise 5.9 and 14.1 TCell Types in Nervous Tissue:Learning OutcomesWhen you complete the activities, you should be able to:1.Activity 14.1 Discuss the structure and function of the different types ofneurons and neuroglia.
5.9 and 14.1 The Must Terminology•Neuron•Cell body•Axon•Dendrites•Nucleus•Nucleolus•Axon hillock•Chromatophilic (Nissl) bodies•Synapses•Synaptic terminal•NeurogleaThere are two cell types in nervous tissue:1.NEURONS:the cells that transmit nerve impulses betweenparts of the nervous system2.GLIA:the cells that support and nourish neurons.
514.1 Overview of Cell Types in NervousTissueThe structural and functional unit of the nervous system istheneuron,ornerve cell.–Has two types of processes:dendrites and axons:–Dendritesserve as contacts to receive impulses from other neurons–Axon - transmits impulses to other cells.•Neuron•Cell body•Axon•Dendrites•Nucleus•Synapses•Synaptic terminal
14.1 Overview of Cell Types in NervousTissueNEURONScan be classified into four typesaccording to the number ofcell processes they possess and their functions