Connective tissue septa divide the testes into lobules, which contain seminiferous tubules where sperm production occurs. These septa help to structure and organize the testes into functional units for optimal sperm production.
The tough whitish membrane that surrounds the testes is called the tunica albuginea. This fibrous layer provides structural support and protection to the testes, helping to maintain their shape. It also plays a role in the formation of lobules within the testes, which contain the seminiferous tubules where sperm is produced.
In humans, there are specialized cells in the testes called spermatogonia (specifically in the basal compartment of the seminiferous tubules). It divides to form two primary spermatocytes. These move up into (a different part of) the seminiferous tubules, duplicates its DNA and divides by meiosis (reduction division) to form haploid secondary spermatocytes. Each divides and forms sperm, so there are four from each spermatogonia but where? the sperm cell is made
There are about 200-300 lobules in each testis.
The testes are part of the male reproductive system, in which their function is sperm production. The testes are also part of the endocrine system, in which they make the hormone testosterone.
First the nucleus divides. Then the cytoplasm divides.
The tough whitish membrane that surrounds the testes is called the tunica albuginea. This fibrous layer provides structural support and protection to the testes, helping to maintain their shape. It also plays a role in the formation of lobules within the testes, which contain the seminiferous tubules where sperm is produced.
Breast cancer develops in either the ducts or the lobules. Lobules are where the milk is produced and ducts are where the milk travels to the nipple. Cancer cells develop when the cells lining the ducts or lobules become abnormal in size and shape and start multiplying in an uncontrolled way.
Totally Busted - 2003 Pop Goes the Lobules - 4.8 was released on: USA: 23 September 2006
Testes
In humans, there are specialized cells in the testes called spermatogonia (specifically in the basal compartment of the seminiferous tubules). It divides to form two primary spermatocytes. These move up into (a different part of) the seminiferous tubules, duplicates its DNA and divides by meiosis (reduction division) to form haploid secondary spermatocytes. Each divides and forms sperm, so there are four from each spermatogonia but where? the sperm cell is made
Testicles is the synonym for testes.
This condition refers to the enlargement of breast lobules, which contain a greater number of glands than usual. If a group of lobules are found near each other, the affected area may be large enough to be felt.
In humans, there are specialized cells in the testes called spermatogonia (specifically in the basal compartment of the seminiferous tubules). It divides to form two primary spermatocytes. These move up into (a different part of) the seminiferous tubules, duplicates its DNA and divides by meiosis (reduction division) to form haploid secondary spermatocytes. Each divides and forms sperm, so there are four from each spermatogonia but where? the sperm cell is made
Kuffper cells? These are the fixed macrophages ... Otherwise you may mean hepatocytes in the liver lobules. These contain many microvilli and carrier proteins facing the space of disse for nutrient exchange.
There are about 200-300 lobules in each testis.
In between your rabbits back legs you will see 2 ball-shaped protuberances that have no fur on them: these are the testes. Sometimes they are hidden behind fur. Actually, these are the scrotums: the testes are inside the scrotums, and you can't actually see them. Keep in mind that rabbits can draw their testes up into the body cavity so they are not always visible. This is an adaption that helps prevent injury while digging/fighting/running etc. Especially when a rabbit is frightened, he will pull his testes into his abdomen. You may still be able to locate the scrotums, but when they're empty they can be hard to find. Also, baby rabbits are born with the testes in their abdomen, and they don't descend into the scrotums until they grow a little older (around 4 months of age, they are usually descended, but it can take up to 5 months).
Females do not have testes. Testes are male reproductive organs. The female equivalent of testes is ovaries, which produce eggs and female sex hormones.