Sperm cell midpiece
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Motile sperm cells typically move via flagella and require a water in the sperm's midpiece (at the base of the sperm head).
30 Nov The midpiece of the sperm is packed with mitochondria. Mitochondria are organelles in cells that produce energy. Sperm use the energy in the.
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Description:The chromosomes of many sperm have dispensed with the histones of somatic cells and are packed instead with simple, highly positively charged proteins called protamines. A rotation of the nucleus causes a repositioning of the acrosomal vesicle to occur. Some of these beads attach to the outer doublet microtubules that comprise the flagellar axoneme. As described in Chapter 16, the axoneme consists of two central singlet microtubules surrounded by nine evenly spaced microtubule doublets. Nuclear condensation The nucleus becomes smaller, denser and takes on a characteristic, flattened form. Development of the flagellum The future axonemal structure grows out of one centriole distal.
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