Rarest Blood Type in the World The rarest blood type in the world using the ABO and Rh system is The RH Null blood type. Someones blood is grouped as Rh-null if the blood lacks all of the 61 possible antigens of the rhesus system. This type of blood can be considered as the Golden blood if …
Transitional epithelium is also called Uroepithelium or Urothelium (because it lines the urinary system), and it is a type of stratified epithelial tissue in which the surface cells change shape from being rounded to squamous in nature. Transitional epithelium is located in the urinary system, especially the urinary bladder. When the bladder is empty, the surface …
Pseudostratified Columnar Epithelium is a type of a columnar epithelium which is actually single layered epithelium but may appear as a stratified epithelium hence the name: Pseudo- stratified epithelium (it is not a true stratified epithelium). This type of epithelium when viewed with a microscope will show the nuclei to lie in …
Spermatogenesis is the process through which immature sperm cells called Spermatogonia (which are actually stem cells) are transformed through a series of different types of cell divisions in order to produce mature sperm cells called Spermatozoa. Spermatogonia (or Spermatogonium singular) are undifferentiated spermatogenic cells that need to be differentiated through the processes of mitosis and meiosis before they …
Oogenesis is also called Ovogenesis, and it is the process whereby oogonia (immature oocytes) are transformed into mature oocytes. The process of Oogenesis begins before birth and is completed after puberty. Oogenesis even after puberty still continues to menopause (permanent cessation of menstrual bleeding associated with the menstrual cycles). Oogenesis and Spermatogenesis are forms of …
A Cartilage is a type of connective tissue that helps in providing support and maintaining structure or morphology of the body. The cartilage is able to perform its function because of its firm consistency and ability to withstand compression and shearing forces; the cartilage can perform these functions because it is made …
Glands are considered as specialized epithelial cells that are adapted specifically for the purpose of secretion. This means in addition to performing functions such as protection and absorption, the cells of epithelial tissue also may secrete chemical substances. Therefore, no matter how complex a gland may be, it was first derived from epithelial …
Adipose tissue is best described as a form of connective tissue in which fat cells (also called Adipocytes) predominate. These large fat cells are found isolated or in small groups within loose or dense irregular connective tissue but occur in large aggregates as adipose tissue or fat in many body regions and organs. The cells …