Male Reproduction System Flashcards
Male reproductive system
Scrotum Testis Seminiferous tubules Epididymis Sperm duct Seminal vesicle Bladder Prostate Gland Cowpers gland Urethra Penis Foreskin
Testis function
Where sperm is produced-seminiferous tubules inside testes are lined with sperm producing cells.
Produce testosterone- cells between tubules produce the hormone testosterone.
Epididymis function
Sperm mature and are stored here
Sperm duct and Urethra function
Sperm duct: brings sperm to the urethra
Urethra: carries sperm and urine out of the body
Seminal vesicle, prostate gland, cowpers gland function
These glands produce seminal fluid which nourishes the sperm and provides a medium in which to swim.
Sperm + Seminal fluid = Semen
Penis function
Releases sperm into the female during intercourse
Foreskin function
Protects the penis
Scrotum function
Holds testis and keeps testis at the correct temperature for sperm production (35 degrees)
Sperm structure and functions
Acrosome: contains digestive enzymes to allow the sperm to break the shell of the egg so the sperm can enter.
Nucleus: contains 23 chromosomes
Collar: contains mitochondria therefore gives energy
Flagellum: allows sperm to swim
Role of meiosis in sperm production
sperm producing cells are diploid (46 chromosomes)
they divide by meiosis to form haploid Sperm cells (23)
Male Reproduction hormones
Testosterone
FSH
LH
Testosterone
Produced
Functions
Produced: testis
Functions: Male secondary sexual characteristics
Helps testis produce sperm
FSH
Stands for
Produced
Functions
Stands for: Follicle stimulating hormone
Produced: Pituitary gland
Functions: Stimulates testis to produce sperm.
LH
Stands for
Produced
Functions
Stands for: Luteinising hormone
Produced: Pituitary
Functions: Stimulates testis to produce testosterone
