Wednesday, July 9, 2008

Science Biojournal-Entry 2


For this post, i think it would be appropriate to first give an explanation on what sperms are? During the past few days, i have found out that the word is actually derived from the Greek word sperma(meaning seed) and refers to the male reproductive cells.

It consists of a head, a midpiece and a tail. The head is the nucleus with densely coiled cromatinfibres, surrounded anteriorly by an acrosome( a cap-like structure that develops over the anterior half of the sperms head), which contains enzymes used for penetrating the female egg.

The midpiece has a central filamentous core with many mitochondria spiralled around it, used for ATP production for the journey through the female cervix, uterus and uterine tubes.

The tail or "flagellum" executes the lashing movements that propel the spermatocyte, and it consists of microtubules in an extension of the cell membrane.

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