Definition Epithelial tissue is a sheet of cells joined together through the cell to cell adhesions that line the lumen of body cavities and also the outer surfaces of the body; they also line glands (serving as the secretory cells of the glands) and also line ducts of glands. When these sheets of …
Simple Squamous Epithelium Definition Simple squamous epithelium is a single sheet of cells joined together by flat cells called squamous cells that line the serous cavities of bodies and the lumen of blood vessels. The epithelia the cells are flattened and their height being very little as compared to their width. Simple …
Simple Cuboidal Epithelium Definition Simple cuboidal epithelium cells are roughly as tall as they are wide they are cube-like and their greater thickness allows their cytoplasm to be rich in mitochondria and other organelles because they are involved in a high level of active transport across the epithelium and they also perform …
Simple Columnar Epithelium Definition Simple Columnar Epithelium is a type of Epithelial tissue in which the cells are always taller than their width and they have cilia or microvilli at the apex of these cells that are often specialized for absorption the apical ends of these cells have complexes of tight junctions …
The stratified squamous epithelium consists of cell layers in which the superficial layer consists of squamous epithelial cells while the underlying cell layers have various types of cells. The deepest layer is made up of columnar cells. This type of epithelial tissue covers body parts that are exposed to frequent frictional forces or …
Ascariasis is an infection affecting the small intestine that is caused by a roundworm known as Ascaris lumbricoides. This worm is the commonest intestinal roundworm affecting man and belongs to a group of roundworms called Nematodes. Ascariasis Epidemiology Ascariasis is common in humid atmosphere with poor sanitary conditions; hence is seen in the tropics …
Ascaris lumbricoides is a nematode that commonly infects humans; and the common name of ascaris is roundworm but it is not the only type of roundworm as there are many others. The disease caused by Ascaris lumbricoides is called Ascariasis which is an infection of the intestines. The infective stage of Ascaris lumbricoides is the egg. Classification of the …
Elephantiasis is a symptom or manifestation of a disease called Filariasis this disease is caused by a roundworm known as Wuchereria bancrofti. Humans get infected through the bite of female anopheles mosquito and Culex fatigans mosquito because any of these mosquitoes transmit the larvae of Wuchereria bancrofti into the skin whenever they bite. What is Elephantiasis? Elephantiasis is the …