human reproductive system Flashcards
function of female r structures
● Ovaries = produce egg cells in follicles
● Fallopian tubes = transports an egg cell from ovary to uterus
● Uterus = where embryo develops
● Cervix = separates uterus from vagina, protects fetus
● Vagina= leads from the cervix to outside of the bod
list structures of female reproductive system
ovary
fallopian tube
cervix
endometrium
uterus
vagina
Identify the structures of the male reproductive
system
A = Testis
B = Scrotum
C = Penis
D = Urethra
E = Epididymis
F = Prostate gland
G = Seminal vesicle
H = Vas deferens
function of testes
production of sperm cells + testosterone
function of urethra
allows secretion of urine and semen from the body
function of seminal vesicle
secretes fluid contains fructose and proteins to nourish sperm
function of penis
penetrates vagina and releases sperm
function of scrotum
holds and maintains an optimum temp for testes
function of epididymis
stores sperm
function of vas deferens
carry sperm from testes to urethra
How does the human body produce
gametes?
Via gametogenesis
Name the two types of gametogenesis
● Spermatogenesis
● Oogenesis
What is spermatogenesis?
Gametogenesis in males that results in the production of spermatozoa.
Where does spermatogenesis take place?
seminiferous tubules
Outline the stages of spermatogenesis.
Outline the stages of spermatogenesis.
Primordial germ cells → spermatogonia → primary
spermatocytes → secondary spermatocytes →spermatids → four spermatozoa
What is the germinal epithelium?
A surface layer of cells surrounding the
ovaries in females and testicles in males
that is involved in gametogenesis
How do primary spermatocytes form?
● Primordial germ cells divide by mitosis,
forming spermatogonia
● Growth period of spermatogonia without further division forms primary spermatocytes
How are spermatids formed?
● Primary spermatocytes divide in meiosis I
to form haploid secondary spermatocytes
● Secondary spermatocytes divide in meiosis II
to form four haploid spermatids
How do spermatozoa form?
Spermatids differentiate to gain flagellum,
acrosome and many mitochondria.
Name the three types of cells within
testes
● Spermatogonia
● Sertoli cells
● Interstitial cells (cells of Leydig)
What are Leydig cells?
● Cells located adjacent to the seminiferous
tubules in the testes that secrete testosterone
● Also called interstitial cells of Leydig
What are sertoli cells?
Cells located within the seminiferous tubules
in the testes that provide nourishment and
protection to cells produced during
spermatogenesis
