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LAB 7 : Sensory Reception

LAB 7 : Sensory Reception. Lab Goals:. Know major terminology associated with sensory reception and the nervous system Identify structures and their functions in the vertebrate eye

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LAB 7 : Sensory Reception

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  1. LAB 7: Sensory Reception

  2. Lab Goals: • Know major terminology associated with sensory reception and the nervous system • Identify structures and their functions in the vertebrate eye • Practice science process skills: generating hypotheses and predictions, statistical analysis of data, graphs, and drawing conclusions

  3. TWOPARTS OF THE NERVOUS SYSTEM • Central Nervous System (CNS) • Brain • Spinal Cord • Peripheral Nervous System (PNS) • Sensory receptors • Supporting neurons

  4. Neurons • Signal travels from cell body down axon • Neurotransmitter is released from synaptic terminal • Received by dendrites of an adjacent neuron • Repeat

  5. Sensory receptors • Mechanoreceptors -Hearing • Photoreceptors -Seeing • Pain receptors • Chemoreceptors • Thermoreceptors

  6. PHOTORECEPTORS • Rods • Vision in dark • Single type • Rhodopsin (Black/white/grey) • Cones • Vision in light • Three types (based on type of opsin) • Red • Green • Blue

  7. VISION PHYSIOLOGY

  8. Humans Octopus

  9. TODAY’S LAB • T-test • Sheep Eye Dissection (Procedure 1) • Reaction Timer (Procedure 2) • Which is faster seeing or hearing? • Fern spores (pg. 133, 139; camera or draw) • Fungi (procedure on handout) vs. We will derive methods together!

  10. NEXT WEEK • Sensory Reception Lab DUE • 20 pt quiz on Exercise Physiology and Sensory Reception • New TA! Email: Michael.Rodriguez@colorado.edu

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