Гистология цитология


-6. Sex cell that consists of a head (containing haploid nucleus), midpiece and tail



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3-6. Sex cell that consists of a head (containing haploid nucleus), midpiece and tail:
d. spermatozoon++
3-7. Chromosome number in the nucleus of spermatozoon:
b. haploid++
3-8. Structures of spermatozoon that contain microtubules:
d. axoneme++
3-9. Nucleus of the spermatozoon is situated in:
a. head++
3-10. Which part of spermatozoon contains mitochondria:
c. middle piece++
3-11. The part of spermatozoon that contains proximal centriole:
b. connecting piece++
3-12. Acrosome of spermatozoon represents a derivative of:
e. Golgi complex++
3-13. On the electron micrograph of the spermatozoon transverse section one can see axial filament surrounded by mitochondria. Section of which part of the spermatozoon is it:
c. middle piece++
3-14. Which is the correct sequence of embryogenesis:
e. fertilization – cleavage – gastrulation – histogenesis and organogenesis++
3-15. Fertilization takes place in:
a. outer third of the uterine tube++
3-16. The process of union of a sperm and an ovum in order to form a zygote is called:
a. fertilization++
3-17. Rheotaxis is the ability of spermatozoon for:
c. upstream movement in a flowing liquid+++
3-18. Chemotaxis is ability of spermatozoon for:
e. directional migration due to a chemical stimulus++
3-19. Capacitation is:
a. a change in spermatozoon whereby it aquires the ability to fertilize an ovum ++
3-20. Process that occurs during contact interaction between gametes (in course of fertilization):
a. acrosomal reaction ++
3-21. Acrosomal reaction is the process of:
c. excretion of hyaluronidase and tripsin by acrosome++
3-22. Which of the cell structures takes part in the formation of fertilization membrane of zygote:
d. cortical granules++


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