Male Reproductve System Flashcards
Scrotum
Pouch of pigmented skin and fibrous tissue and muscle divided into 2 compartments
Testes layers
Tunica vaginalis - outer covering
Tunica albulginea - fibrous covering
Tunica vasculosa - network of capillaries
Seminal vesicles
Secrete seminal fluid
Provides energy for sperm
Prostate
Produces milky coloured prostate fluid composing of 30% of volume of semen
Penis
Passage for ejaculation of semen and excretion of urine
Secondary sex characteristics
Body hair
Muscle growth
Taller
Enlargement of larynx
Spermatogenesis stage 1
Diploid spermatogonia include twice number of chromosomes
Stage 2 sperm
Chromatids allow the exchange of genetic information through the synapsis process
It is done before dividing into haploid spermatocytes through meiosis
Stage 3 spermatogenesis
Through this division the new. Daughter cells will further divide into 4 spermatic having unique chromosome that are approximately half in number of original spermatogonium
Stage 4 spermat
Cells mov from lumen of testes to epidymis
They get move and developed into 4 sperm cells with growth of micro tubules
Fertilisation stage 1
Sperm makes contact with egg
Stage 2 fertilisation
Acrosome reats with zona pellucida
Stage 3 ferti
Acrosome reacts wt the perivitelline space
Stage 5 fertilisation
Sperm nucleus enters egg
Stage 6 fertilisation
Cortical granules fuse with egg plasma membrane
Ejaculation stage 1
Vas defers contract to squeeze sperm towards base of penis prostate gland and seminal vesicles release secretions to make sperm
Stage 2 ejaculation
Muscles at the base contract every 0.8 secs and force semen out of the penis
Erection
Parasympathetic stimulus resulting in massive increase of blood to fill corpus carvel nose and spongiosm
