when are spermatozoa transported from the vas deferens to the abdominal urethra
Vas deferens During ejaculation, the smooth muscle in the walls of the vas deferens contracts reflexively, thus propelling the sperm forward. This is also known as peristalsis. The sperm is transferred from the vas deferens into the urethra, collecting secretions from the male accessory sex glands such as the seminal vesicles, prostate gland and the bulbourethral glands, which form the bulk of semen.
Cwm Rhondda Arglwydd, arwain trwy'r anialwch, Fi, bererin gwael ei wedd, Nad oes ynof nerth na bywyd Fel yn gorwedd yn y bedd: Hollalluog, Hollalluog, Ydyw'r Un a'm cwyd i'r lan. Ydyw'r Un a'm cwyd i'r lan Agor y ffynhonnau melus 'N tarddu i maes o'r Graig y sydd; Colofn dân rho'r nos i'm harwain, A rho golofn niwl y dydd; Rho i mi fanna, Rho i mi fanna, Fel na bwyf yn llwfwrhau. Fel na bwyf yn llwfwrhau. Pan yn troedio glan Iorddonen, Par i'm hofnau suddo i gyd; Dwg fi drwy y tonnau geirwon Draw i Ganaan – gartref clyd: Mawl diderfyn. Mawl diderfyn Fydd i'th enw byth am hyn. Fydd i'th enw byth am hyn.
Rate equation k is the first order rate constant, which has units of 1/s or sâˆ’1.
Animal Animals are eukaryotic, multicellular organisms that form the biological kingdom Animalia. With few exceptions, animals are motile (able to move), heterotrophic (consume organic material), reproduce sexually, and their embryonic development includes a blastula stage. The body plan of the animal derives from this blastula, differentiating specialized tissues and organs as it develops; this plan eventually becomes fixed, although some undergo metamorphosis at some stage in their lives.