lab 7 : sensory reception
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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 - PowerPoint PPT PresentationTRANSCRIPT
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LAB 7: Sensory Reception
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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
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TWO PARTS OF THE NERVOUS SYSTEM
1. Central Nervous System (CNS)• Brain• Spinal Cord
2. Peripheral Nervous System (PNS)• Sensory receptors• Supporting neurons
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Neurons1) Signal travels from
cell body down axon
2) Neurotransmitter is released from synaptic terminal
3) Received by dendrites of an adjacent neuron
4) Repeat
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Sensory receptors
1. Mechanoreceptors-Hearing
2. Photoreceptors-Seeing
3. Pain receptors
4. Chemoreceptors
5. Thermoreceptors
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PHOTORECEPTORS• Rods
• Vision in dark• Single type
1. Rhodopsin (Black/white/grey)
• Cones• Vision in light• Three types (based
on type of opsin)1. Red2. Green3. Blue
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VISION PHYSIOLOGY
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Humans Octopus
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TODAY’S LAB1. T-test2. Sheep Eye Dissection (Procedure 1)3. Reaction Timer (Procedure 2)4. Which is faster seeing or hearing?
5. Fern spores (pg. 133, 139; camera or draw)
6. Fungi (procedure on handout)
vs. We will derive methods together!
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NEXT WEEK• Sensory Reception Lab DUE• 20 pt quiz on Exercise Physiology
and Sensory Reception• New TA! Email: