Human Reproduction Flashcards
The organ through which sperm and urine exit a mans body
Urethra
The organ that produces sperm and testosterone
Testes
Joining of sperm and egg
Fertilization
Release of an egg from the ovary
Ovulation
The female organ in which a baby devolpes
Uterus
Where fertilization occurs
Fallopian tubes
Delivery of the placenta
Afterbirth
Fertilized egg during the first 8 weeks of devolpement
Embryo
Protective covering wrapped around the embryo filled with fluid
Amniotic sac
Sex cells that ovaries produce
Eggs
Male sex hormone
Testosterone
Two female sex hormones
Estrogen and progesterone
Gland responsible for metabolism
Thyroid gland
Chemical substance that travels from an endocrine gland through the bloodstream to other organs/tissues to regulate growth and activity
Hormones
Explain the relationship between semen and sperm
sperm is in the mixture of semen
Explain the relationship between egg and menstrual cycle
Menstrual cycle occurs when egg isn’t fertilized
Explain the relationship between fetus and placenta
Placenta provides nutrients for the fetus
Describe the changes that occur in the female reproductive organs during the menstrual cycle
Release of egg from ovary then uterine lining thickens to prepare for pregnancy and If there is no pregnancy then menstration occurs
There are how many stages of labor
3 stages
Summarize path of egg through the female reproductive system
Fallopian tube ~> endometrium ~> uterus ~> cervix ~> vagina
Ovulation occurs on this day
14th day
Describe the difference between how identical and fraternal twins are devolved
- Identical twins develop from the same fertilized egg
* Fraternal twins develop at the same time but from different fertilized eggs
Most cells in the body contain how many chromosomes? Sex cells contain half. Why?
- 23
* half from each parent gives baby 23 pairs of chromosomes
Menstruation usually lasts about this long
3-7 days