Sensory epithelium
From WikiLectures
The sensory epithelium represents a specialized form of epithelium that is able to react to stimuli from the external environment. It occurs as squamous epithelium in two forms.
Primary sensory epithelium[edit | edit source]
It originates from neuroectoderm. It is characterized by the presence of both types of nerve processes - dendrites and axon. The olfactory epithelium, retina is of neuroectoderm origin.
Secondary sensory epithelium[edit | edit source]
They differ in their origins. It comes directly from the germ sheet - ectoderm. It does not contain a conducting process (axon). Such an epithelium is capable of responding to a stimulus, but without the presence of a nerve fiber the signal could not be further sent to higher centers; eg taste cup.
Links[edit | edit source]
References[edit | edit source]
- JARKOVSKÁ, D – MARTÍNEK, J. Histology I.. 1. edition. Karolinum, 1997. 54 pp. ISBN 80-7184-388-1.
