Videos from the slide deck…

Interactive:

Make some observations while invesigating the interactive.  Explore how cellular transport is involved in electrical signalling with a neuron. How do ions move through different membrane proteins for a resting neuron or a stimulated neuron?  Click on the “stimulate neuron” tab and observe the changes in the membrane. Try zooming into the membrane to see the movement closer. How do the electrochemical gradient and charge of the interior of the neuron change?   

https://phet.colorado.edu/sims/html/neuron/latest/neuron_en.html 

As you look at this video identify how ion concentrations are changed because of different neurotransmitters.

Tasks…

Potential terms and ideas to mind-map

homeostasis

endotherm

ectotherm

 action potential

negative feedback

positive feedback

neurotransmission

reflex

neuron

myelin

axon

dendrite

integration

stimulus

response

afferent

efferent

sensory neuron

autonomic

somatic

effector neuron

interneuron

 

 

 Quick Task: Thermoregulation

  • Research the behaviours of a specific endothermic animal or ectothermic animal. How do specific behaviours allow for the animal to control its body temperature in cool and hot conditions?  How do specific parts of the animal’s anatomy help with thermoregulation?
  • Use a feedback diagram to show how this animal uses thermoregulation in one of these conditions:
    • endotherm in hot conditions
    • ectotherm in cool conditions
    • ectotherm in hot conditions
  • Be sure to use ⊕ and ⊝ symbols in the feedback diagram to add important details. 

Research Task: Neurological Disorder

  • Search for a disorder related to damaged or changed neurons.
  • Describe how neuronal signalling, by action potentials or neurotransmission, changed.
  • Explain how the change in neuron activity is related to a symptom of the disorder.
  • Treatment options