A simple columnar epithelium
is a columnar epithelium
that is uni-layered. In humans, a simple columnar epithelium forms a lining in the uterus
and in most organs of the digestive tract
including the stomach
, small intestine
, and large intestine
Simple columnar epithelia are further divided into two categories: nonciliated and ciliated.
Nonciliated columnar epithelia
do not have cilia
, and are found in the gastrointestinal tract
and the gallbladder
where they perform secretion
~usually absorbs through the digestive system
~located in the stomach and intestines,gallbladder, and ecretory ducts of some glands.
~more function, more tissue, more cytoplasm
~ nucleus is closer to the basal surface
~ absorbs; seceretion of mucus enzymes and other substances; cillated type propels by cilary action.
Ciliated columnar epithelia
and other substances via cilia, and are found in the upper respiratory tract
, the Fallopian tubes
, the uterus
, and the central part of the spinal cord
Ciliated columnar epithelium lines the lumen of the uterine tube, where currents generated by the cilia propel the egg cell toward the uterus.
- "Gall bladder" - Simple columnar epithelium
- - Uterine tube lumen