Epithelial cells are generally divided into two main groups:
Simple and Stratified
Simple epithelium is of a single cell thickness and every cell is in contiguous contact with the basal lamina by hemi desmosomes (cell anchors). These can be further subdivided into other groups.
Stratified epithelium is multilayered arranged into 'strata' and is found in the body where the cells in contact with the lumen are lost frequently due to mechanical or chemical stressers (e.g small intestine or skin cells). The cells are held together by intermediate filaments and desmosomes. These can be further subdivised into other groups.
The features of the groups vary widely depending on the sub-specialisation e.g. stratified squamous keratinised epithelium makes up skin cells and has very different features to simple cuboidal epithelium such as that found in the testicle.
Meiosis would produce sperm cells and epithelial cells in plants. Red blood cells do not undergo meiosis, as they lack a nucleus and are not capable of dividing.
Most of the intestinal epithelial cells would likely be in the G1 phase of the cell cycle, as they are constantly renewing and dividing to maintain the integrity of the intestinal lining.
Epithelial cells are classified based on their shape (squamous, cuboidal, columnar) and the number of cell layers (simple or stratified). They can also be categorized based on their function, such as ciliated columnar epithelium found in the respiratory tract for moving mucus.
Without knowing what the functions are a person will have difficulty knowing which are specialized for epithelial cells. Including the functions would insure that a person will provide the correct answer.
The type of tissue that fits this description is epithelial tissue. Epithelial cells are tightly packed together with large nuclei located near the basal surface. This arrangement allows epithelial tissue to form protective barriers in the body and facilitate the exchange of substances.
ciliated epithelial tissue
Epithelial cells in urine would be a pretty good indicator of an infection, this the pelvic pain. ( Maybe kidney or Bladder)
Epithelial tissue are closely connected and have a basal membrane, even though not all epithelial cells are necessarily connected to the basal membrane. The so called simple epithelial tissue subgroup does.
Meiosis would produce sperm cells and epithelial cells in plants. Red blood cells do not undergo meiosis, as they lack a nucleus and are not capable of dividing.
Cells would fit closely together to form a barrier
Cells would fit closely together to form a barrier
Most of the intestinal epithelial cells would likely be in the G1 phase of the cell cycle, as they are constantly renewing and dividing to maintain the integrity of the intestinal lining.
Epithelial cells are classified based on their shape (squamous, cuboidal, columnar) and the number of cell layers (simple or stratified). They can also be categorized based on their function, such as ciliated columnar epithelium found in the respiratory tract for moving mucus.
Without knowing what the functions are a person will have difficulty knowing which are specialized for epithelial cells. Including the functions would insure that a person will provide the correct answer.
I think that the bottom of epithelial cells is closest to blood vessels (if one were to look at a flat 2D image. Endothelial cells similarly would have the top of the cell closest to blood vessels.
The type of tissue that fits this description is epithelial tissue. Epithelial cells are tightly packed together with large nuclei located near the basal surface. This arrangement allows epithelial tissue to form protective barriers in the body and facilitate the exchange of substances.
In terms of overall cells, it would be your skin cells, just from the sheer amount of skin. In terms of how often the cells reproduce, that would be the lining of your stomach. The hydrochloric acid in your stomach eats away at your stomach lining quickly, so your body must rapidly replace them.