CHAPTER FOUR
HUMAN REPRODUCTION
BASICS
● Haploid gamete + haploid gamete = diploid zygote
● A zygote undergoes mitosis multiple times
● Some cells change physically or chemically
● The increased amount of differentiated cells perform different functions
● Meiosis starts at puberty
● Genetic diversity and a constant chromosome number through generations
is ensured
MALE REPRODUCTIVE SYSTEM
, TESTES
● Hold the seminiferous tubules
● The seminiferous tubules are lined by epithelium cells which produce
spermatozoa
● Specialized sertoli cells are rich in glycogen which serve as nutrients
for the spermatids as they develop into the sperm cells
● Cells of Leydig in the interstitial cells found in between seminiferous
tubules
● The cells of Leydig secrete testosterone
Transverse
Section of the
testis
Longitudinal Section of the Testis
HUMAN REPRODUCTION
BASICS
● Haploid gamete + haploid gamete = diploid zygote
● A zygote undergoes mitosis multiple times
● Some cells change physically or chemically
● The increased amount of differentiated cells perform different functions
● Meiosis starts at puberty
● Genetic diversity and a constant chromosome number through generations
is ensured
MALE REPRODUCTIVE SYSTEM
, TESTES
● Hold the seminiferous tubules
● The seminiferous tubules are lined by epithelium cells which produce
spermatozoa
● Specialized sertoli cells are rich in glycogen which serve as nutrients
for the spermatids as they develop into the sperm cells
● Cells of Leydig in the interstitial cells found in between seminiferous
tubules
● The cells of Leydig secrete testosterone
Transverse
Section of the
testis
Longitudinal Section of the Testis
