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(5) Ch. 22 Sperm development

Terms

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head
acrosome
Within the _____ are the chromosomes and a large vesicle called an ________, which contains enzymes and other proteins that enable the sperm to fuse with the egg during fertilization.
tail
ATP T
The _____ contains complex machinery make up of proteins that hydrolyze ___ and convert the released chemical energy into motion.
midpiece
ATP
The _______ anchors the tail to the head and contains mitochondria, which produce the ____ required for motility.
seminiferous tubules
spermatogonia
Spermatogenesis starts near the basement membrane in the ___________ _______ with undifferentiated germ cells called _______________.
germ cells
spermatogonia
As ____ ____ migrate from the basal compartment to the lumen of a seminiferous tubule, they undergo various stages of development. The dashed arrow indicates that some ____________ do not differentiate following mitosis and remain as spermatogonia.
primary spermatocyte
The spermatogoniums chromosomes are replicated, and the cell differentiates to become a __________ ____________, which has 46 duplicated chromosomes possessing 2 sister chromatids apiece.
secondary spermatocytes
The primary spermatocyte goes through meiosis I to yield 2 _________ ___________, which possess 23 duplicated chromosomes.
spermatids
Secondary spermatocytes undergo meiosis II to become __________, which have 23 single chromosomes but have not developed the mature sperm's characteristic features.
spermatozoa
Spermatids differentiate to become __________ (n), which possess the characteristic head, midpiece and tail.
seminiferous tubules
After spermatozoa are formed, they are released into the lumen of the __________ ________.
molitity
Sperm aquire _______ only after they have moved from the seminiferous tubules to the epididymis to undergo further maturation.

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