Explain the significance of a threshold of detection. List and explain the steps involved when a receptor has a stimulus applied. There are three types of neurons in the nervous system. Name them and describe the principle functions of each type. Invertebrate axons do not have myelin, yet many axons conduct impulses very rapidly.
Synaptic transmission fails in the absence of calcium ions.
Which type of synaptic transmission is faster, electrical or chemical. Tonic receptors may be used to determine duration of the stimulus while phasic will provide information regarding changes in a stimulus. Thermoreceptors detect changes in temperature Nociceptors respond to stimuli resulting from physical or chemical damage to tissue.