GOBLET CELLS 43 



(b) Modified or pseudostratified cells are simple 

 columnar or ciliated cells in which the nuclei are at 

 different levels, thus giving the appearance of several 

 layers of cells. These cells are found as ciliated 

 elements in the oviduct, uterus, and middle ear, and 

 as non-ciliated elements in the seminal vesicles and 

 prostate. 



(c) Stratified columnar cells consist of numerous 

 layers of cells arranged one upon another. They are 

 found in the lining membrane of the vas deferens 

 (male), membranous urethra, and ducts of some glands. 



3. Ciliated Cells. (a) Simple ciliated cells are ar- 

 ranged in a single layer of columnar cells which have 

 upon their exposed surface fine cilia or hair-like pro- 

 cesses; they possess motion that is always directed 

 toward the outlet of the organ in which they are 

 located. They are found in the smaller bronchioles, 

 spinal canal, accessory spaces of the nasal cavities, 

 and the ventricles of the brain. 



(b) Stratified ciliated cells are the same as the 

 stratified columnar, with the cilia attached only to 

 the cells of the exposed layer. These cells are found 

 in the epididymis (male), first portion of the vas 

 deferens (male), Eustachian tube, 

 upper part of the pharynx, larynx, FlG - 20 



trachea, and nasal tract. 



4. Prickle Cells. These are 

 polygonal elements that possess 

 little spines, which project from 

 the sides of the cells, and pass 

 to meet spines of other cells, thus 

 preventing the cells from meeting, 



at the same time forming inter- prickle ceils. 



cellular bridges or spaces. They 



are found in the epidermis (skin) just above the genetic 



layer. 



5. Goblet Cells. These are cells resembling the 

 cylindric type, distended with a secretion called 



