L22. Synapses Flashcards
1
Q
Chemical synapses occur between neurons and :
a)
b)
c)
A
neurons
muscle cells
gland cells
2
Q
Describe the 3 stage route from presynaptic cell.
A
Presynaptic cell -> synaptic cleft -> postsynaptic cell
3
Q
When does the post-synaptic cell “fire”?
A
Only when the membrane potential threshold is reached.
4
Q
Describe the meaning of convergence relating to neurons.
A
Each neuron receives many inputs.
5
Q
Describe the meaning of divergence relating to neurons.
A
The neurons synapses with many other cells.
6
Q
What is botox and what is it used for?
A
Botulinum toxin is used to paralyse facial muscles to remove wrinkles.
