... the water in the filtrate enters the convoluted tubules
and collecting ducts by osmosis.
Fluid flows ...
Fluids become more concentrated along the tubules
and ducts to form urine , which is then drained ... medulla. They contain the secreting apparatus and tubules
and are also called malpighian pyramids .
... salt through the tear ducts associated with the eyes. Such birds can drink sea water without harm.
In insects , a system involving Malpighian tubules
is utilized to excrete metabolic waste. Metabolic waste diffuses or is actively transported into the tubule, which transports the wastes to the ...
... him, including a skin layer (Malpighi layer ) and two different Malpighian corpuscles in the kidneys and the spleen , as well as the Malpighian tubules
in the excretory system of insects.
He also studied chick embryo development with detailed drawings and discovered taste buds of human ....
... cell is characterized by a minimum of cytoplasm.
Main article: Spermatogenesis
Sperm are produced in the seminiferous tubules
of the testes in a process called spermatogenesis. Round cells called spermatogonia divide and differentiate eventually to become sperm. During ...
... and capacitation (initiation of the acrosome reaction) of the sperm cells so viability is maintained.
Spermatozoa are produced in seminiferous tubules
in the testes . They start off as spermatogonia , undergoing mitosis becoming a type A spermatogonium or a type B spermatogonium.
Type B ...
... cell carcinoma
basal cell (only in skin): basal cell carcinoma
glandular epithelium: adenoma , cystadenoma , adenocarcinoma
epithelium (kidney): renal tubular adenoma , renal cell carcinoma (Grawitz tumor )
hepatocytes: hepatocellular adenoma , hepatocellular ...