Lecture notes APES1001A

Neurobiology & sensory Physiology: (L1)
The Nervous system – neurons, the neural pathway and neuroglia
 Regulates thoughts and memories (slide 5)
 Spinal nerves how we move, how organs function




Neuron: transmit electrical signal
 Neuron structure slide 7
 NB structures and functions (slide 8-9)
 Sensory neuron(afferent), interneuron & motor neuron (efferent)




How does a neuron transmit information:
1. Sensory information from surrounding environment or other neurons

, 2. Information is transmitted as electrical signal to the axon




 Not all neural pathways are sensory-only or interneuron only!
 Motor output path when we need a muscle to move or an organ to respond in a
certain way




Dorsalsensory neurone
Ventral rootmotor neurons
Nerve response to stimulusdorsal root gangliondorsal rootinterneuronventral
rootaxon of motor neuronspinal nerve
Slide 14 cross section of a peripheral nerve