Unit 9 Demos

Objective 5:

How are resting potentials restored? (5d)
Links under Objective 6 (below) may be helpful for 5f.
How much Na+/K+ exchanged in a single action potential? (5g)
Neuroscience: A Journey Through the Brain - The Action Potential

Objective 6:

Schwann cells
Myelin sheath
What is a secondary function of Schwann cells? See the caption to the image at top left for an answer.

Objective 8:

What change must be induced in the membrane potential of a post-synaptic neuron for an action potential to be induced? (8d)
How are neurotransmitters removed from the synapse? (8f)

Objective 9:

Where are neurotransmitters synthesized, packaged, and transported? (9b)

Objective 11:

Comparative nervous systems

Objective 12:

Reflex arcs

Objective 13:

The autonomic nervous system (13b)
Control of heartbeat - an example of autonomic control (13e)
What type of cells are neurosecretory cells of the adrenal medulla modified from? (13f)

Objective 14:

Trends in vertebrate brain evolution
The neocortex

Optional Supplementary Material:

You need your sleep!
Brain size matters for sex - The fear centre finds a role in arousal
Sleep boosts lateral thinking - Study shows the value of sleeping on a problem.
Neurologic drugs
One of the World's Most Powerful Neurotoxins from a Snail?
Chips Coming to a Brain Near You - next in line to get that memory upgrade isn't your computer, it's you.