Epithelia Flashcards
Give an example of a surface with epithelial lining that lines an interior spaces that do no open to the exterior.
- Pericardial sac
- Pleural sacs
- Peritoneum
- Blood vessels
- Lymphatic vessels
What is the basement membrane?
It is the name give to the thin, flexible, acellular layer, which lies between epithelial cells and the subtending connecting tissue
Describe the structure of the basement membrane.
It consists of a basal lamina, which is laid down by the epithelial cells and is therefore closest to them.
What is the function of the basement membrane?
It serves as a strong flexible layer to which epithelial cells adhere
It also serves as a cellular and molecular filter
Simple squamous epithelia is found on the Bowman’s capsule. True or false?
True
Simple squamous epithelia lining body cavities is called ……
Mesothelium
Name the four places simple cuboidal epithelia is found.
Thyroid follicles
Small ducts of many exocrine glands
Kidney tubules
Surface of the ovary
What is the purpose of simple cuboidal epithelia in kidney tubules?
Absorption and secretion
Simple columnar epithelia is found in the gall bladder. True of false?
True
Simple columnar epithelia is found on most of the …….. …….
Alimentary canal
Where is simple columnar with microvilli found?
In the small intestine
What are occludins?
They are proteins that bind to adjacent plasma membranes tightly together in the apical portions of some epithelia. It allows restriction of certain proteins to its apical surface and segregate others to its lateral and basal surface
Where is simple pseudostratified epithelia found? (5)
Lining of the nasal cavity, trachea and bronchi
Epididmyis and ductus deferns
Auditory tube and part of lymphatic cavity
Lacrimal sac
Large excretory ducts
Where is stratified squamous non-keratinized epithelia found? (5)
- Oral cavity
- Oesophagus
- Larynx
- Vagina
- Eye
Other than the skin, where is stratified squamous keratinized epithelia found?
There is limited distribution in the oral cavity
