plate tectonics. noun plural but singular in construction. Tweet. geology: a scientific theory that the Earth's surface is made of very large sections that move very slowly; also: the movements of the large sections that form the Earth's surface.
The testicle is divided into parts called lobules. Each lobule contains tiny U-shaped tubes called seminiferous tubules. There are about 800 seminiferous tubules tightly coiled within the testicle. The seminiferous tubules open into a series of uncoiled, interconnected channels called the rete testis.Ducts, or tubes, connect the rete testis to a tightly coiled tube called the epididymis. The epididymis joins to a long, large duct called the vas deferens. Each testicle is held in the scrotum by a spermatic cord.he testicle is divided into parts called lobules. Each lobule contains tiny U-shaped tubes called seminiferous tubules. There are about 800 seminiferous tubules tightly coiled within the testicle. The seminiferous tubules open into a series of uncoiled, interconnected channels called the rete testis.
Definition of Seminiferous Tubules. Male sex cells are known as sperm. When a sperm from a male unites with the egg from a female, the process of fertilization occurs and a new life in produced.This process of reproduction is crucial for the survival of any living thing.his means that the seminiferous tubules are crucial in the process of reproduction. The seminiferous tubules are found inside the testes. They consist of a network of tubes that are lined with a type of cell known as a sertoli cells.