Download - 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
• Practice science process skills: generating hypotheses and predictions, statistical analysis of data, graphs, and drawing conclusions
TWO PARTS OF THE NERVOUS SYSTEM
1. Central Nervous System (CNS)• Brain• Spinal Cord
2. Peripheral Nervous System (PNS)• Sensory receptors• Supporting neurons
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
Sensory receptors
1. Mechanoreceptors-Hearing
2. Photoreceptors-Seeing
3. Pain receptors
4. Chemoreceptors
5. Thermoreceptors
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
VISION PHYSIOLOGY
Humans Octopus
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!
NEXT WEEK• Sensory Reception Lab DUE• 20 pt quiz on Exercise Physiology
and Sensory Reception• New TA! Email: