HPS111 - Week 5 Flashcards
(37 cards)
What different types of Brain Cells are there? What are they called and what do they do?
Neurons - nerve cells most fundametnal unit
Draw a Neuron, label the dendrites, cell body, nucleus, axon hillock and axon, and notes of Ranvier.
What covers the Axon, What is it there for?
Where do neurons interact with each other (i.e what are the relevant parts of the neurons?)
What is the junction called?
What are the 4 types of neuron? Where might you find each of them?
What is grey matter made up of? What about the white matter?
What is the difference between intra-neuron communication (within a single neuron) and inter-neuron communication (between cells)?
What is an ion? What types are there?
What are diffusion and electrostatic pressure? How do they work? How do they affect ions?
What is meant by semi-permeability of the cell membrane? What make sthem more or less permeable?
What is the resting state of the intra and extra cellular space? What is the “resting potential” (both definitionally and specifically)?
What is an excitatory potential?
What is an inhibitory potential?
What happens if a cell receives an inhibitory potential at the same time as an equally large excitatory potential?
Where do the graded potentials converge?
What are some differences between graded potentials and action potentials?
What is the threshold of excitation? What happens when it is reached?
What are depolarisation, repolarisation, and hyperpolarisation? When do these happen?
Why can an action potential only go one way?
Where do action potentials occur? What is this process called?
What’s the relationship between neurotransmitters and graded potentials?
What does pre-synaptic and post-synapitc refer to? Where are the dendrites?
In general terms, how do psychoactive chemicals affect our brains )and therefore our experience)?
