Tubules

Some articles on tubules:

T-tubule - Structure
... Transverse tubules are invaginations of the sarcolemma ... perpendicular to the length of the fiber, many T-tubules can lie axial to the long-axis of the fiber, both wrapping around and running alongside myofilament bundles ... The size and arrangement of T-tubules vary depending on muscle type and species ...
T-tubule - Detubulation
... It is possible to physically and functionally uncouple T-tubules from the surface membrane using a technique known as detubulation ... The rapid expansion is thought to cause the t-tubules to detach from the surface membrane, which reseals, and to reseal within the cell ... This technique can be used to investigate the function of the t-tubules ...
Mesonephric Tubules
... Mesonephric tubules are genital ridges that are next to the mesonephros ... In males, some of the mesonephric kidney tubules, instead of being used to filter blood like the rest, they "grow" over to the developing testes, penetrate it, and become ... The sperm differentiate inside the seminiferous tubules, then swim down these tubes, then through these special mesonephric tubules, and go down inside Wolffian duct ...
Malpighian Tubule System - General Mode of Action - Alternative Modes of Action
... Complex cycling systems of Malpighian tubules have been described in other insect orders ... Hemipteran insects use tubules that permit movement of solutes into the distal portion of the tubules while reabsorption of water and essential ions directly to the hemolymph occurs in the ... and Lepidoptera use a cryptonephridial arrangement where the distal end of the tubules are embedded in fat tissue surrounding the rectum ...
Apocrine Sweat Gland - Structure
... The apocrine gland comprises a glomerulus of secretory tubules and an excretory duct that opens into hair follicle on occasion, an excretory duct opens to the skin ... Unlike eccrine secretory tubules, secretory tubules of the apocrine gland are single-layered (lacking ductal cells), vary in diameter from place to place, and sometimes branch ... The tubules are wrapped in myoepithelial cells, which are more developed than their eccrine gland counterparts ...