The Reproductive System
Reproductive system begins with Endocrine System Endocrine system is similar to the nervous system Both regulate body activities Nervous system uses nerve impulses Endocrine system uses chemicals Endocrine glands - produce and release those chemicals (called hormones) into the bloodstream which then circulates the chemicals throughout the body
Endocrine Glands responsible for sex hormones In females: ovaries In males: testes
Sex hormones Female Sex hormones: estrogen - progesterone controls changes in female’s body works with progesterone to trigger egg development progesterone works with estrogen to trigger egg development Male Sex hormone: testosterone controls changes in male’s body regulates sperm production
Sex cells Female Sex cells: Eggs = 23 chromosomes Male Sex cells: Sperm = 23 chromosomes What is the cellular process we’ve studied that results in these haploid cells?
Fertilization Fertilization: the joining of a sperm & egg Zygote: a fertilized egg = 46 chromosomes
Male Reproductive System: Functions: to produce sperm to produce testosterone
Male Reproductive System: semen - mixture of sperm cells and fluids 5 - 10 million sperm per drop Male Reproductive System: Testes (there are 2) produce sperm produce testosterone Scrotum external pouch of skin that holds testes keeps testes 2-3℃ below body temp Penis organ through which semen leaves the body
Female Reproductive System (slide 1 of 2): Ovaries (there are 2) produce eggs produce estrogen Fallopian tubes passageways for eggs that connect the ovaries and the uterus
Female Reproductive System (slide 2 of 3): 3. Uterus hollow, muscular organ size of pear fertilized egg attaches to wall of uterus unfertilized egg breaks down and moves into the vagina
Female Reproductive System (slide 3 of 3): 4. Vagina muscular passageway connecting the uterus to the outside of the body aka birth canal the passageway through which a baby leaves the mother’s body
Menstrual Cycle: the monthly cycle of changes that occur in the female reproductive system Stages: Ovulation - the process in which an egg is released from the ovary. Menstruation - the process of the extra blood and tissue of the thickened lining of the uterus passing out of the body.