Spermatogenesis
Interstitial endocrine cells are also called _____ Cells
Leydig
Anterior to the nucleus head of the sperm is the ______, which contains enzymes necessary for penetration of the egg
acrosome
Spermatids have to much extraneous ______ to function well in a reproductive capacity
cytoplasm
LH stimulates _________ ________ cells to produce testosterone, which acts synergistically with FSH to stimulate sperm production
interstitial endocrine
_________ ________ cells lye external to and between the seminiferous tubules
interstitial endocrine
Anterior to the nucleus head of the sperm is the acrosome, which contains enzymes necessary for _________ of the egg
penetration
FSH is secreted from the ______ ________
posterior pituitary
A __________ __________ undergoes a growth phase before it is ready for meiosis I
primary spermatocyte
Spermatogonium undergoes mitosis to a ______ _____ that is ______
primary spermatocyte, 2n
Each ________ ________ forms two spermatids
secondary spermatocyte
There are two _______ ________ after meiosis I
secondary spermatocytes
Primary spermatocytes under meiosis I to form _________ _________ that are ___
secondary spermatocytes, n
Spermatogenesis occurs in the __________ _________ of the testes
seminiferous tubules
interstitial endocrine cells lye external to and between the _________ ________
seminiferous tubules
LH stimulates interstitial endocrine cells to produce testosterone, which acts synergistically with FSH to stimulate _____ production
sperm
The sustenocytes or sertoli cells nourish the spermatids as they begin their transformation into _____
sperm
Each secondary spermatocyte forms two ________
spermatids
Spermiogenesis converts ________ into functional sperm
spermatids
The sustenocytes or sertoli cells nourish the _______ as they begin their transformation into sperm
spermatids
There are a net four _______ from meiosis II
spermatids
Secondary spermatocytes undergo meiosis II to form ________ that are __
spermatids, n
FSH stimulates mitotic division of spermatogonia to begin ___________
spermatogenesis
Human sperm production is called _____________
spermatogenesis
____________ is the process of gametogenesis in males
spermatogenesis
Before puberty, all divisions of ___________ are mitotic
spermatogonia
The primitive sperm cell is termed the __________
spermatogonia
At puberty, each mitotic division of ___________ produces one spermatogonium and one primary spermatocyte
spermatogonium
At puberty, each mitotic division of spermatogonium produces one _________ and one ________ ________
spermatogonium, primary spermatocyte
Spermatids undergo _______ to form functional sperm that are n
spermiogenesis
The ________ or ______ ______ nourish the spermatids as they begin their transformation into sperm
sustenocytes, sertoli cells
Spermatogenesis occurs in the seminiferous tubules of the ______
testes
LH stimulates interstitial endocrine cells to produce ________, which acts synergistically with FSH to stimulate sperm production
testosterone
Spermatogonium is 2n or n?
2n
_________ to the nucleus head of the ______ is the acrosome, which contains enzymes necessary for penetration of the egg
Anterior, sperm
LH stimulates interstitial endocrine cells to produce testosterone, which acts synergistically with ____ to stimulate sperm production
FSH
_______ undergo spermiogenesis to form functional sperm that are n
Spermatids
_________ have to much extraneous cytoplasm to function well in a reproductive capacity
Spermatids
__________ occurs in the somniferous tubules of the testes
Spermatogenesis
___________ converts to a primary spermatocyte that is 2n
Spermatogonium
___________ converts spermatids into functional sperm
Spermiogenesis
A primary spermatocyte undergoes a growth phase before it is ready for ______
meiosis I
Primary spermatocytes under ________ to form secondary spermatocytes that are n
meiosis I
There are two secondary spermatocytes after _______
meiosis I
Secondary spermatocytes undergo _______ to form spermatids that are n
meiosis II
There are a net four spermatids from _______
meiosis II
The progression of ______ events can be followed form tubule periphery to the lumen
meiotic
Spermatogonium undergoes ______ to a primary spermatocyte that is 2n
mitosis
At puberty, each _______ division of spermatogonium produces one spermatogonium and one primary spermatocyte
mitotic
Before puberty, all divisions of spermatogonia are _______
mitotic
________ ________ cells are also called Leydig Cells
Interstitial endocrine
_____ stimulates interstitial endocrine cells to produce testosterone, which acts synergistically with FSH to stimulate sperm production
LH
_____ _______ under meiosis I to form secondary spermatocytes that are n
Primary spermatocytes
_______ _______ undergo meiosis II to form spermatids that are n
Secondary spermatocytes
interstitial endocrine cells lye _______ to and _____ the seminiferous tubules
external, between
True of false: Spermatids are functional gametes
false (they are not functional)
There are a net ___ spermatids from meiosis II
four
Spermiogenesis converts spermatids into _______ ________
functional sperm
Spermatids undergo spermiogenesis to form _________ ________ that are ___
functional sperm, n
Spermatogenesis is the process of __________ in males
gametogenesis
A primary spermatocyte undergoes a _______ ______ before it is ready for meiosis I
growth phase
The progression of meiotic events can be followed form tubule periphery to the ______
lumen
The progression of meiotic events can be followed form the _______ _______ to the lumen
tubule periphery
Each secondary spermatocyte forms ___ spermatids
two
There are ____ secondary spermatocytes after meiosis I
two