Autonomic nervous system
Visceral motor (involuntary) function
Somatic nervous system
Somatic motor (voluntary) function
- Non-neuronal cells
- Provide support + nutrition
- Form myelin
What characterises a neuron?
- Electrical excitability
- Presence of synapses
Name the three parts of a typical neuron
The axon leaves the soma at the...
Give the 5 functions of glial cells on neurons
- Supply oxygen + nutrients
- Insulate between neurons
- Destroy pathogens
- Remove dead neurons
Resting membrane potential
- Potential gradient
- Between IC space and EC space
The potential of the IC space is...
Steps toward depolarisation of a cell
- Positive IC charge
- Decreased PD between IC and EC
Give the potential difference found between the IC + EC space of a neuron
- Na+: 140
- K+: 5
- Ca2+: 2.5
- Cl-: 100
- Na+: 14
- K+: 95
- Ca2+: μmol/l
- Cl-: 3
- Na+ out
- K+ in
RMP is a result of...
Outflow of K+ ions
Give the aim of the ATPase pump in the neuron cell membrane
Maintain concentration gradient
Which equation is used to calculate the change of permeability of a neuron
Goldman-Hodgkin-Kats (GHK) equation
Potassium equilibrium potential
The lipid bilayer of a cell functions as an electrical...
Ions pas via the channels
Hyperpolarisation never evokes...
A potential change remaining under a threshold
What is conduction with decrement?