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PHSL 410B Repro Lect 10 (94 questions with 100- correct answers) $14.99   Add to cart

Exam (elaborations)

PHSL 410B Repro Lect 10 (94 questions with 100- correct answers)

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  • Course
  • PHSL 1010
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  • PHSL 1010

PHSL 410B Repro Lect 10 (94 questions with 100- correct answers)

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  • August 25, 2024
  • 16
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • PHSL 1010
  • PHSL 1010
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PHSL 410B Repro Lect
10 (94 questions with
100% correct answers)
oocyte ovulated by female must be transported to -
answer ampulla of fallopian tube


________ of fallopian tube sweep ovarian surface and
pick up oocyte and surround by cumulus oophorus
and corona radiate and deposit it into fallopian
tube - answer fimbriae


_______ of fallopian tube move oocyte-cumulus
complex towards uterus to ampulla of fallopian
tube - answer cilia and smooth muscle


__________ million sperm cells are deposited in
vagina at time of male ejaculation - answer 150-
600


______ sperm reach ampullary portion of fallopian
tube within 5 minutes - answer 50-100

,______ of cervix, uterus, and fallopian tube propel
sperm into upper reproductive tract - answer
forceful contractions


_______ of seminal plasma induce further contractile
activity - answer prostaglandins


Capacitation of sperm - answer Physiological
process within the female reproductive tract by
which spermatozoa gain the capacity to fertilize an
oocyte
- sperm penetrate zona pellucida
- removal or modification of protein coat from
sperm cell membranes


Steps in fertilization - answer 1. sperm weaves
past cumulus granulosa cells of corona radiate and
sperm head attaches to zona pellucida
2. sperm cell undergoes acrosomal reaction
3. spermatozoan penetrates through zona
pellucida
4. cell membranes of sperm and oocyte fuse
5. oocyte undergoes rise in intracellular Ca2+
which triggers cortical reaction. This triggers
exocytosis of granules beneath plasma membrane
that release enzymes causing zona pellucida to
harden

, 6. oocyte completes second meiotic division
7. sperm nucleus decondenses and transforms into
male pronucleus
8. male and female pronuclei fuse forming new
cell, the zygote


zona pellucida contains ______ glycoproteins -
answer 3


receptors on plasma membrane of sperm cell bind
to - answer zona protein 3


acrosmal reaction - answer rise in Ca2+ inside
sperm cell triggers exocytosis of the acrosome
which contains hydrolytic enzymes


Acrosomal hydrolytic enzymes - answer dissolve
zona pellucida


mechanical action by whip-like action of tail pushes
the sperm toward - answer oocyte membrane


describe the fusion of sperm and oocyte
membranes - answer microvilli on oocyte
surround the sperm, membrane fuse, and contents
of sperm cell enter the oocyte

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