seminiferous tubules
tube to conduct seminal fluid of a male
Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby ...
Seminiferous tubules
[L. semen - seed; L. ferre - to bear]. The tightly coiled tubules found within the testes of vertebrates containing germ cells that are differentiated into spermatozoa.
seminiferous tubules Tubules on the interior of the testes where sperm are produced. PICTURE
sensor In a closed system, the element that detects change and signals the effector to initiate a response.
seminiferous tubules
[L. semen, seed + ferre, to bear or carry + dim. of tubus, tube]
Highly coiled tubes in the testes in which sperm are produced.
sensation ...
seminiferous tubules
Highly coiled tubes in the testes in which sperm are produced.
sepal
A whorl of modified leaves in angiosperms that encloses and protects the flower bud before it opens.
seminiferous tubules, prostate gland, vas deferens.
B.
epididymis, vas deferens, urethra.
Between the seminiferous tubules are special cells called Leydig cells (or "interstitial cells") where testosterone and other androgens are formed.
[edit] Blood supply and lymphatic drainage ...
Spermatogenesis occurs in seminiferous tubules in testes.
The cell that undergoes meiosis is a primary spermatocyte.
The walls of the seminiferous tubules consist of diploid spermatogonia, stem cells that are the precursors of sperm.
Spermatogonia
divide by mitosis to produce more spermatogonia or
differentiate into spermatocytes.
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 spermatogonia become primary spermatocytes.
From the cords the seminiferous tubules are developed, and between them connective-tissue septa extend.
Seminiferous tubules are inside each testis, and are where sperm are produced by meiosis. About 250 meters (850 feet) of tubules are packed into each testis.
There are several levels of sexual differentiation: chromosomal sex (XX or XY), gonadal sex (testes or ovary), internal plumbing sex (fallopian tubes, uterus or vas deferens, seminiferous tubules, epididymis), external plumbing sex (labia, ...
 See also: Sperm, Cells, Testes, Cell, Human
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