Gametogenesis Flashcards
Name the precursor cells of Reproductive System
Primordial germ cell
gametogenesis begins with cells namely
Primordial germ cells
Reproductive systems derived from embryonic cells namely
Primordial germ cells.
Primordial germ cells are derived from
Epiblast
Primordial germ cells reaches ________________ by 4 weeks
yolk sac
Primordial germ cells reach the yolk sac by How many weeks?
4 weeks
from yolk sac Primordial germ cells travels to reach
genital ridge
from yolk sac primordial germ cells reach genital ridge in How many weeks?
5 weeks
Primordial germ cells differentiates into either______________ or____________
spermatogonia (OR) oogonia
If the primordial germ cells deviate from the normal Pathway and move into neck region Lead formation of
OROpharyngeal teratoma
If primordial germ cells got deviated from the normal Pathway
what are the common Locations that they get lodged?
neck area
sacrococcygeal region
If primordial germ cells deviate from the normal Pathway and reach the Sacrococcygeal region will lead to the formation of
SacroCoccygealteratoma
what does it mean by pluripotentancy?
Pluripotent cells can lead to formation of all three germ layers.
Hence, Can give rise to teratomas
True/false
As the primordial germ cells are pluripotent they can give rise to teratoma and can lead to formation of All Three germ layers
True
totipotent cells have the ability to form embryonic and extraembryonic tissues also.
what does it mean by totipotency?
having the ability to form all embryonic and extra embryonic tissues
All cells (Blastomeres) are totipotent up to 8 celled stage of zygote.
which type of cell division is known as reduction division
meiosis I
what are the different phases of cell division?
prophase
metaphase
Anaphase
telophase
spermatogenesis occurs in the which organ of our body
testis
Name the two Important Compartments present in the testis
Interstitial compartment
seminiferous tubules
what are structures present in the Interstitial compartment of Testis?
Leydig cells —–> release testosterone
fibroblasts
Neurovascular tissue.
Testosterone is secreated by
Leydig cells of the Interstitial compartment of testis.
