SPERMATOGENESIS
formation and deveopment of highly specialized sex cells
GAMETOGENESIS
they migrate to gonads to differentiate if its going to be spermatogonium or oogonium
PRIMORDIAL GERM CELLS
increases cell numbers
MITOSIS
4 processes in gametogenesis
MITOSIS, GROWTH, MEIOSIS, DIFFERENTIATION
synthesis of materials needed for succeeding stages and processes
GROWTH
reduce the chromosome number in half and allows variation
MEIOSIS 2
it makes the germ cells specialized to carry out specific functions
DIFFERENTIATION
formation of the sperms
SPERMATOGENESIS
multiplication period, where division occurs
SPERMATOGONIAL STAGE
they are respinsible for the development of sperm, lined with a germinal epithelium that is made up of 2 types of cell
SEMIFIFEROUS TUBULES
the 2 cells lined in germinal epithelium of the seminoferous tubules
DEVELOPING SPERMATOGENIC CELLS AND SERTOLI CELLS
it lines the whole seminiferous tubules and gives rise ro germ cells, a cellular layer that keeps on dividing and dividing
GERMINAL EPITHELIUM
this tissue is between the outside of the seminiferous tubules
INTERSTITIAL TISSUE
those are nurse cells that help the development of the spermatogenic cells with dark pyramidal nucleus
SERTOLI CELLS
cells located outside the seminiferous tubules responsible for testosterone secretion
LEYDIG CELLS
space at the center of a seminiferous tubule
LUMEN
primary function of spermatogenesis
TESTOSTERONE
initial origin of spermatogonium
PRIMORDIAL GERM CELLS
it divides and gives rise to more spermatogonia
SPERMATOGONIUM
2 types of spermatogonium
A AND B
attached at the basement membrane
SPERMATOGONIUM A
in what process does spermatogonium a enter? what are the products?
MITOSIS, SPERMATOGONIUM A AND B
same size as A and not attached at the basement membrane
SPERMATOGONIUM B
product of spermatogonium B
PRIMARY SPERMATOCYTE
largest cell and produce secondary spermatocyte
PRIMARY SPERMATOCYTE
what process does primary spermatocytes enter
MEIOSIS 1
it is half size the primary spermatocyte and produces spermatids
SECONDARY SPERMATOCYTE
what process does secondary spermatocytes enter
MEIOSIS 2
smaller cells than the secondary that is closer to lumen
SPERMATIDS
what is the process where spermatids enter
DIFFERENTIATION
what phase is where the spermatogonium form through mitosis
SPERMATOGONIAL PHASE
it is the phase of the beginning of the spermatocyte
SPERMATOCYTOGENESIS
beginning of the spermatids
SPERMATIDOGENESIS
beginning of spem
spermiogenesis
will anchor the nucleus and assists the distal
proximal centriole
what centriole gives rise to the axoneme of the flagellum
DISTAL CENTRIOLE
this is made up of microtubules
AXONEME
it will break down into numerous vesicles for them to be easier to migrate and move towards the upper part of the nucleus
GOLGI APPARATUS
it is at the inside of acromosal vesicles
acrosomal granules
entire acrosomal vesicle with granules
ACROSOME
it will lose its fluid content and collapse on top of the nucleus forming now the acrosomal cap
acrosomal vesicle
it is made up of an outer and inner acrosomal membrane and the acrosomal granule
ACROSOMAL CAP
it elongates and facilitates motility, reduces the resistance in swimming and give easier movement as it is covered with acrosomal cap
NUCLEUS
it transports tubulin to the distal so that it can elongate up to the flagellum and form the post nuclear cap
MANCHETTE
it will discard all cytoplasmic contents that are not required for the sperm to be light weigh
CYTOPLASM
collapses and hugs the entire sperm
PLASMA MEMBRANE
final product of spermatogenesis
SPERM