PSYCO367 Chapter Notes - Chapter 14: Inhibitory Postsynaptic Potential, Opioid, Prefrontal Cortex
2 May 2014
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Document Summary
Comel called the skin the monumental facade of the human body. In addition to its warning function, the skin also prevents bodily fluids from escaping and at the same time protects us by keeping bacteria, chemical agents and dirt from penetrating our bodies. Epidermis: layer of dead cells in the outer layer. Mechanoreceptors: are found in the two layers: they respond to mechanical stimulation such as pressure, stretching and vibration. Four types of mechanoreceptors that are located in the epidermis and the dermis. We can distinguish between these receptors by their distinctive structures and by how fibres associated with the receptors respond to stimulation. The merkel receptor: fires continuously as long as the stimulus is on: sensing fine details. The meissner corpuscle: fires only when the stimulus is first applied and when it is removed: controlling handgrip. Found deeper in the skin: ruffini cylinder. Is associated with perceiving stretching of the skin: pacinian corpuscle.
