. Cunningham's Text-book of anatomy. Anatomy. factory hairs Peripheral "process B Body of -cell "with Central process Fig. 676.âOlfactory and Supporting Cells. B. Hu°maU } M- Schultze. G- Human (â¼â¢ Brunn). iSxASAL CAVITY. 805 eUipS6 of ovalCen^Pf T^d °r branChed Pr0Cesses' These c^s contain par?s of the cells Zf) ^ **? Sltuated at the deeP ends of ^ columnar i^£:^^L m what is termed the of this columnar epithel- ium is covered by a thin limiting membrane. 2. Olfactory Cells. â These are bipolar nerve-cells, the central processes of which are continued as the axons of the olfacto
. Cunningham's Text-book of anatomy. Anatomy. factory hairs Peripheral "process B Body of -cell "with Central process Fig. 676.âOlfactory and Supporting Cells. B. Hu°maU } M- Schultze. G- Human (â¼â¢ Brunn). iSxASAL CAVITY. 805 eUipS6 of ovalCen^Pf T^d °r branChed Pr0Cesses' These c^s contain par?s of the cells Zf) ^ **? Sltuated at the deeP ends of ^ columnar i^£:^^L m what is termed the of this columnar epithel- ium is covered by a thin limiting membrane. 2. Olfactory Cells. â These are bipolar nerve-cells, the central processes of which are continued as the axons of the olfactory nerve- fibres. They are homo- logous with the cells of the spinal ganglia, but differ from them in that they retain their primi- tive position in the sur- face epithelium. The cell bodies are spindle- shaped and are arranged in several rows between the deeper, attenuated parts of the supporting cells. Each consists of a large, spherical nucleus with a small amount of enveloping protoplasm; the nuclei form a layer of some thickness, termed the zone of round nuclei The peripheral process of each cell is rod-like, and extends between the columnar portions of the supporting cells as far as their free surfaces, where it pierces the external Wing membrane and divides into a number of fine hair-like processes termed olfactory hairs. The central process is a delicate, beaded filament and is continued upwards as the axon of an olfactory nerve-fibre. 3. Basal Cells.âThese cells are branched, and He on a basement membrane between the deep extremities of the supporting and olfactory cells Olfactory NervesâThe fibres of the olfactory nerves are devoid of medullary sheaths, and arise, as stated, from the olfactory cells. They are collected into fasciculi which form a plexiform network under the mucous membrane and ascend on the medial and lateral walls of the olfactory region of the nasal cavity They are lodged, near the base of the skull, in grooves or canals in the ethmoid
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanatomy, bookyear1914
