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Ejaculation occurs in two stages, the emission stage and the expulsion stage. [4] The emission stage involves the workings of several structures of the ejaculatory duct; contractions of the prostate gland, the seminal vesicles, the bulbourethral gland and the vas deferens push fluids into the prostatic urethra. [3]
Bulbourethral glands are located posterior and lateral to the membranous portion of the urethra at the base of the penis, between the two layers of the fascia of the urogenital diaphragm, in the deep perineal pouch.
Skeletonema costatum is a cosmopolitan centric diatom that belongs to the genus Skeletonema. [1] It was first described by R. K. Greville, who originally named it Melosira costata, in 1866. [1]
Gynecomastia (also spelled gynaecomastia) [a] is the non-cancerous enlargement of one or both breasts in men due to the growth of breast tissue as a result of a hormone imbalance between estrogens and androgens.
The primosome consists of seven proteins: DnaG primase, DnaB helicase, DnaC helicase assistant, DnaT, PriA, Pri B, and PriC. At each replication fork, the primosome is utilized once on the leading strand of DNA and repeatedly, initiating each Okazaki fragment, on the lagging DNA strand. Initially the complex formed by PriA, PriB, and PriC binds ...
Usnea is a genus of fruticose lichens in the large family Parmeliaceae.The genus, which currently contains roughly 130 species, was established by Michel Adanson in 1763. . Species in the genus grow like leafless mini-shrubs or tassels anchored on bark or
Venus' flower basket (Euplectella aspergillum) is a species of marine glass sponge found in the deep waters of the Pacific Ocean, usually at depths below 500 m (1,600 ft).
Furcraea foetida (Giant Cabuya, Green-aloe or Mauritius-hemp) is a species of flowering plant native to the Caribbean and northern South America.It is widely cultivated and reportedly naturalized in many places (India, parts of Africa, Portugal, Australia, Thailand, Florida, New Zealand, and many oceanic islands).