Qbank Flashcards
Motility of sperm by
Catsper family cations
Sperm Cytoplasm shed as
Residual bodies od renauds
Proximal and distal cenriole os sperm form
Proximal= spherical structure in neck
Distal=distal end of middle piece(annulus)
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Spiral sheath os sperm formed by
Mitochondria
Annulus on distal end of sperm is formed by
Distal centriole
Leydig cells stimulated by hormone?
LH
Stage in which primary spermatocyte is stuck?
When released?
Dicytootene/Diplotene
Prophase
/Mieosis 1
Released on puberty
Corpus callousum after non fertilization stays for
2 weeks
When does Corpus callous reaches max size in cycle
9 days after ovulation
Corpus callosum maintained in pregnancy by ?
Hormone secreaterd by
Hcg
Syncitiotrophoblasts
Corpus callosum till when in pregnancy?
What after it?
3 to 4 months
Placenta
What is preembryonic stage
Initial 2 weeks
16 cell stage ?
4th day of frrtilization
Blastocyst at which day
5th day
Zona pellucuda dissapears at
6th day
Implantation at which day
7th
Bilaminar disc formation when after fertilization
9th day after fertilization
After implantation
Formation of extra embryonic mesoderm when
12th day of fertilization
Fertilization period for ovulation
12 to 24 hrs
Fertilization duration of sperm after ejaculation
24 to 48 hrs
Capacitation occurs in
Female tract conditioning
Capacitaion for?
Lasts for?
Penetration in outer layer
7 hrs
Acrosomal reaction to penetrate which layer
ZP
Sperm binds to zp through?(2)
Causes what
Glycoprotien ligands zp3 and zp2
Cause acrosomal reaction(release of acrosomal enzymes hyaluronidase acid phosphates acrosin)
