diseases affecting the simple squamous epithelium
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Answer:
Explanation:
Four examples of epithelial tissue disease include eczema, psoriasis, epithelial carcinoma, and severe asthma. Eczema affects the epithelial tissue of the skin, including the stratified squamous tissues, and causes inflammation of skin tissue in angry rashes and itchy welts.
Answer:
There are several types of epithelial tissues in the human body. These tissues are subject to a number of diseases, and we'll explore a few examples here in this lesson. Epithelial tissue diseases tend to strike the skin, the intestinal tract, and other absorbent areas of the body.
Types of Epithelial Tissue
In the human body, there are several types of basic tissue. Muscle tissue, nervous tissue, connective tissue - each one serves a purpose within the body, through the transmission of messages, movement, and the protection of organs. The epithelial tissues of the body are the tissues that line the surfaces of our skin, our digestive organs, and our respiratory organs. These tissues are found anywhere in the body where a barrier is put up, and things can selectively pass across that barrier. From the dead surface skin epithelial cells to the absorbent epithelium of the interior of our lungs, epithelial tissue can take on many forms.
In order to better understand the main types of epithelial diseases, let's briefly recap the types of epithelial tissue:
Simple squamous is a single layer of cells, flat and often thin, allowing simple diffusion of materials. Located in the kidneys, blood vessels, and air sacs of the lungs.
Stratified squamous is more than one layer of cells, protecting the underlying tissue from abrasion. The tougher type, containing the protein keratin, is located in the dry upper layer of skin. The nonkeritanized type, meaning without the protein keratin, is located in the moist parts of the mouth, esophagus, vagina, urethra, and anus.
Simple cuboidal is a single layer of cells, cube-like in shape, allowing secretion and absorption. Located in the kidneys, ovaries, and various glands.
Stratified cuboidal is more than one layer of cells, cube-like in shape, allowing protection of glands. Located around the mammary, saliva, and sweat glands.
Simple columnar is a single layer of cells, tall and column-like, allowing absorption and secretion with the help of mucus and tiny hair-like cilia. Located in the digestive tract, glands, parts of the lungs such as the branching bronchi, and the uterus.
Stratified columnar is more than one layer of cells, tall and column-like, allowing protection and secretion. These are rare in the human body, located in the male urethra and associated with certain glands.
Pseudostratified columnar is a single layer of cells, varying in height, allowing secretion and movement of mucus. Located in the windpipe and upper respiratory tract, sperm ducts, and glands.
Transitional is more than one layer of cells, resembling stratified squamous and stratified cuboidal combined, allowing stretching and distending to make room for urine containment. Located in the urinary system, especially the bladder.
Types of Epithelial Tissue Diseases
There are many types of epithelial tissue diseases, spreading across all the forms of epithelial tissue. Here are a few key diseases that are important to understand when discussing how disease affects epithelial tissue.
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