Physiology 2130 Lecture Notes - Lecture 7: Cone Cell, Rod Cell, Sensory Neuron
12 Jun 2016
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Document Summary
As we discussed in module number 1, it is essential for the body to maintain homeostasis the maintenance of relatively stable conditions in the internal environment. In order to do this it is necessary for the body to detect changes in the external environment so it can react appropriately in order to maintain its internal environment. The human body has several sensory systems that allow it to detect these external changes rapidly. These systems include: the somatosensory (touch) system, the visual system, the auditory and vestibular system, the olfactory (smell) system, and the gustatory (taste) system. In this section, we will look at how events in the outside world are detected, converted to action potentials, travel to the brain, and become consciously perceived. In doing so we will examine most of the sensory system of the body (with the exception of smell and taste), their structure, function, and pathways to the brain.
