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Nervous co-ordination

Nervous co-ordination. Objectives - CNS. Describe the gross structure of the whole brain and spinal cord. Location and function of the; Medulla oblongata Cerebellum Cerebral hemispheres Hypothalamus. Describe the functioning of the spinal reflex.

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Nervous co-ordination

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  1. Nervous co-ordination

  2. Objectives - CNS • Describe the gross structure of the whole brain and spinal cord. • Location and function of the; • Medulla oblongata • Cerebellum • Cerebral hemispheres • Hypothalamus. • Describe the functioning of the spinal reflex.

  3. Structure of the brain and spinal cord

  4. Structure and function

  5. Spinal reflex

  6. Objectives – nervous co-ordination in mammals. • Appreciate the difference between nerves and hormones. • Structure and function of different neurones. • Understand nerve impulses and action potentials. • Structure and function of a synapse. • Understand the effect of drugs.

  7. structure • Myelination • http://www.sensory-systems.ethz.ch/MultiMedia/actionp.swf

  8. Types of neurones

  9. Synapsehttp://www.bishopstopford.com/faculties/science/arthur/synapse.swfSynapsehttp://www.bishopstopford.com/faculties/science/arthur/synapse.swf

  10. Depolarisation Cartoon of the whole process. • http://www.brainu.org/action_potential_cartoon.swf Shows the wave action. • http://schools.tdsb.on.ca/rhking/departments/science/bio/homeostasis/nervous_system/action.mov Short clip of depolriation. • http://instruct.uwo.ca/biology/022/unit3/48-09-ActionPotential.mov

  11. Drugs • Caffeine • Nicotine • Opiates

  12. Quiz • What structures make up the central nervous system? • What does the medulla oblongata do? • Where do you find cell bodies in the spinal cord? • Name 4 main structures of a nerve. • Which ion initiates the release of a neurotransmitter? • Name 1 neurotransmitter? • What happens in an action potential when K channels open? • What effect does opiates have?

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