Male and FemaleReproductive Systems

Humans and other organisms have complex reproductive systems that ensure the survival of the species.

Human Male Reproductive System

Structure of male reproductive system, sperm and sperm production

Associated Hormones

Hormone Sent from Acts on Function

Gonadotrophic Hormone(GnRH)

Hypothalamus Pituitary gland

Tells pituitary gland to secrete LH and FSH

Follicle Stimulating Hormone (FSH)

Pituitary gland Testis

Stimulates production of sperm in seminiferous tubuules

Lutenizing Hormone(LH):(ICSH)

Pituitary gland Testis

Stimulates Leydig cells to produce testosterone

Testosterone TestisBody/

hypothalamus

Helps to stimulate sperm production/ secondary sex characteristics and release of GnRH

Inhibitin Sertoli cells Pituitary gland

Slows the release of FSH and GnRH

Human Male Reproductive System

Urinary Bladder

Seminal Vesicle

Prostate

Bulbourethral Gland

Epididymis

Vas deferens

Testis

Scrotum

Urethera

Urinary bladder: collect and store urine for excretion.

Seminal Vesicle: add fluid to spermatozoa for nourishment (sugar rich)

Prostate: add fluid to spermatozoa (secrete fluid that neutralizes acids in the vagina)

Bulbourethral Gland: secrete alkaline fluid to neutralize acidic urine in urethra.

Epididymis: tube for storing and maturing spermatozoa before being released into the vas deferens

Vas deferens: tube leading to urethera in which sperm become active.

Testes: tissue in which spermatogenisis takes place.

Urethera: tube that leads from the urinary bladder to the outside.

Human Male Reproductive System

Sperm

Male haploid sex cell or gamete

HAPLOID: HALF THE GENETIC COMPLEMENT OF THE ORGANISM (23 chromosomes in human male).

Produced in testes Ideal temperature for

production is 34 degrees Celsius

must be accompanied by fluids so that the sperm may move.

Female Reproductive System

Mr.G.Burgess2004

Associated Hormones

Hormone Sent from Acts on Function

Gonadotrophic Hormone

(GnRH)

Hypothalamus

Pituitary gland

Tells pituitary gland to secrete LH and FSH

Follicle Stimulating Hormone

(FSH)

Pituitary gland

Ovary Stimullates the development of oocytes and maturation of follicles

Lutenizing Hormone

(LH)

Pituitary gland

Ovary Simulate the migration of follicle in ovary

Estrogen Ovary Body/ uterus

Forms secondary sex characteristics/ influence the forming of the endometrium

Proghesterone Ovary uterus Maintains the endometrium

Female Reproductive System

Oviduct/ fallopean tube

Fimbrae

Ovary

Uterus

Cervix

Vaginal canal

Bladder

Urethra

Organs

Uterus: protective structure that is the site of implantation and development

Ovary: Structure in which the ova are produced and developed into follicles

Oviduct: the tube which is the site of fertilization and sends the fertilized follicle to the uterus

Fimbriae: structures of oviduct that create currents to bring the ova into the oviduct

Cervix: muscular structure that is the entrance to the uterus and closes the uterus so that the developing fetus is protected

Vagina: the canal that leads the sperm to the uterus

Ovum

Female gamete Haploid (23

chromosomes in human)

Developed during embryonic stage

Matured during puberty

Menopause when follilces are no longer being formed

References

Graffian Follicle, http://www.deltacollege.edu/emp/aassadi-rad/Slides/Bio1/Ovary-Grafian%20folicle.jpg, accessed Dec.7, 2004

Female Reproductive Organs, http://www.uh.edu/~tgill2/image008.jpg, accessed Dec.7, 2004 All images taken by G.Burgess, Nov.23, 2010.