Reproductive System Vocabulary

cellular division, especially of a fertilized egg cell – the first step in a single celled zygote becoming a multicelled organism

• Cleavage

• Mitosis

• Implantation

• Zygote

forcible, sudden expulsion of semen from the male urethra; reflex action due to sexual stimulation

• Pregnancy

• Stimulation

• Ejaculation

• Emission

involuntary discharge of semen from the male urethra; often occurs during sleep

• Erection

• Emission

• Cleavage

• Ejaculation

enlarged, engorged, and rigid state of the penis

• Erection

• Emission

• Ejaculation

• Clevage

process involving the fusion of male and female gametes to form a zygote 

• Zygote

• Implantation

• Fertilization

• Pregnancy

 

vesicle in the ovary that contains a developing egg 

 

• Ovary

• Follicle

• Uterus

• Fallopian tube

phase in embryonic development in which a single layered blastula becomes a multilayered gastrula 

 

• Implant

• Ovary

• Ejection

• Gastrulation

process in which a developing embryo contacts the uterine wall and remains attached to it until birth 

• Implantation

• Zygote

• Ovary

• Gestation

interval from birth to 28 days of age; time of greatest risk

• Implantation period

• Cycle

• Neonatal period

• Gestational period

production and development of an ovum (egg cell) 

• Gestational period

• Oogenesis

• Implantation

• Ovary