REPRODUCTIVE SYSTEM Flashcards
The major function of this system is to ensure the survival of all the species.
Reproductive system
4 major functions of reproductive system
● To produce somatic cells (egg and sperm).
● To transport and sustain these cells that are capable of producing.
● Nurture the developing offspring.
● To produce hormones that are necessary for reproduction
male sex cell
Sperm cell
female sex cell
Oocyte(ovum)
Sex cells are produced by a special type of cellular division known as ________
meiosis
Primary sex organs (gonads) of male
testes
Internal accessory organs of male reproductive system
● Epididymis
● Ductus (vas) deferentia
● Seminal vesicles
● Prostate gland
● Bulbourethral (cowper’s) gland
● Semen
External accessory organs of male reproductive system
● Scrotum
● Penis
This are where sperm cells are produced. It is suspended by a spermatic cord within the sac like scrotum.
Testes
is the tough fibrous capsule that encloses the entire testis.
Tunica albuginea
there are 250 compartments of ________ in the testis.
Lobules
located inside the lobules which are lined by stratified squamous epithelium containing the spermatogenic cells that give rise to sperm cells.
Seminiferous tubules
This is also where spermatogenesis occurs.
Seminiferous tubules
located in between the seminiferous tubules, which are responsible for secreting and producing the sex hormones.
Interstitial cells (cells of leydig)
3 major components of sperm cells
head
middle piece (mitochondrion)
tail (plasma membrane)
contains the genetic material of a sperm (nucleus).
Head
is a small protrusion at the anterior end of the sperm which contains the enzymes. This enzyme is responsible for our body to recognize the sperm as non foreign.
Acrosome
contains central filaments and mitochondria in spinal structure. This is
responsible for faster penetration of the egg cell. This also supplies ATP to the tail.
Middle piece (mitochondrion)
flaggeum; contains several microtubules enclosed in an extension of the cell membrane. This produces lashing or whipping movement for the sperm to swim faster.
Plasma membrane (tail)
responsible for conveying cells to the ejaculatory duct.
Ductus (vas) deferens
secretes alkaline fluid in prostaglandins that helps in neutralizing the acidic component of the semen.
Seminal vesicles
responsible for secreting alkaline fluid that neutralizes the semen’s acidity and enhances the sperm’s motility.
Prostate gland
secretes fluid that lubricates the end of the penis during the pre ejaculatory stage. This serves as the natural lubricant during the intercourse.
Bulbourethral gland