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Apex Learning Biology Semester 2 unit 5.3
Terms in this set (35)
A group of about 100 cells, of two types, that form from a fertilized egg. Each of these cells can be developed into almost any type of cell.
The opening to the uterus from the vagina.
The act of a baby coming out of it's mother and into the world.
A squeeze of the walls of a mother's uterus during childbirth. As the uterus contracts, the mother's cervix slowly opens, and eventually the contractions expel the baby from the mother's body.
The process through which sperm leaves the body.
A fertilized egg that has begun cell division.
A coiled tube connecting the testis to the vas deferens. Here, sperm gain the ability to swim and fertilize
A hormone secreted by the ovaries that stimulates the menstrual cycle; regulates FSH, LH, and GnRH; and promotes the development of the adult female characteristics.
One of two tubes that transport eggs from the ovaries to the uterus. Also called oviduct.
An unborn offspring.
A hormone that stimulates the production of sperm in the testes and eggs in the ovaries. Abbreviated FSH.
Two babies formed from the same mother at the same time, when two eggs are fertilized by two sperm.
A hormone that stimulates the production of LH and FSH, abbreviated GnRH
Two babies formed from the same mother at the same time, when a single fertilized egg cell divides into two embryos.
A hormone that promotes ovulation in females and testosterone production in males. Abbreviated LH
A monthly pattern counted from the first day of a woman's period. The menstrual cycle includes the development and release of an egg, and the preparation of the uterus for a growing embryo.
The pair of female reproductive organs in which eggs are produced.
In the menstrual cycle, when an egg is released from the ovary into the Fallopian tube, where it can be fertilized.
also known as menstruation, the stage in the menstrual cycle in which the lining and blood in the uterus from the last month's cycle are cleared out.
The organ that supports a growing embryo
A hormone secreted by the ovaries that stimulates the female monthly cycle and regulates FSH, LH, and GnRH
The period during which a child develops into an adult capable of reproducing.
The system in the body by which offspring are produced.
The fluid in which sperm cells travel.
One of many slender tubes in the testes in which sperm are produced.
The gender of an organism: male or female. Sex can also refer to an act of reproduction involving a male and female.
A group of molecules that have 17 carbon atoms arranged in four rings. Can refer specifically to anabiotic steroids, which can mimic natural hormones but are dangerous, and illegal for use by athletes.
The pair of male reproductive organs in which sperm are produced
A hormone secreted by the testes that promotes sperm production, sex drive, and development of adult male physical characteristics.
One-third of a cycle ex: the first, second and third three-month long trimesters in pregnancy
A device that uses sound waves to develop a picture of the inside of a body. Ultrasounds are used to see a fetus inside a womb.
A tube connecting a fetus to the placenta.
The female reproductive organ in which a fertilized egg is housed and the fetus develops.
Part of the females reproductive system, leading from the outside of the body to the cervix.
A fertilized egg that has not yet divided. Being fertilized a zygote has a full set of genes- half from the sperm and half from the egg.