The dog as a model to study human epididymal function at a molecular level. Wong N, Wang X. Three columns of erectile tissue: Gene chips are powerful tools for characterizing gene expression in a given tissue under different differentiation or pathological situations and are available for an increasing number of species. This fluid serves to lubricate the urethra and to neutralize any acidity that may be present due to residual drops of urine in the urethra. In addition, it has been recognized that mechanisms that allow chemotaxis in animals can be subverted during cancer metastasis.
Aside from principal cells, clear cells are distributed sporadically throughout the epithelium of the caput, corpus, and cauda segments in most studied species and are primarily responsible for selective absorption of luminal components and conversely, the regulation the luminal pH. Becomes excited during intercourse and leads to orgasm. Carried by seminal fluid produced mostly by the prostate and seminal vesicles, the sperm then travel along the urethra to the end of the penis during ejaculation. Formation and dissociation of sperm bundles in monotremes. While these molecules are present in all the epididymal segments, they nonetheless display an extraordinary level of regionalization, which reflect differential secretory and absorptive activity of the epithelial cells. Identification of luminal and secreted proteins in bull epididymis. The mitotic division of these produces two types of cells.
Spermatogenesis - Wikipedia
Human Physiology/The male reproductive system
Description: Each vas is connected to a small pouch, the seminal vesicle, located behind the bladder. Testicular size continues to increase throughout puberty, reaching maximal adult size about 6 years later. Activity of vestibular glands lubricates the vestibule and facilitates entry of the penis Orgasm includes muscle tension, increase in pulse rate and blood pressure, and rhythmical contractions of the uterus Unlike males, females do not have a refractory period after orgasm and can experience multiple orgasms in a single sexual experience Developmental Aspects: The epididymis has three parts- 1 head or caput epididymis- it is the proximal part of the epididymis.