12 - Human Body Systems - Reproduction and Development - List 2

amnion

• a fluid filled sac that surrounds an embryo

• a type of blood cell

• a part of the brain responsible for memory

• a muscle that aids in digestion

fetus

• developing human organism from the eighth week of pregnancy until birth

• stage of human development before the eighth week of pregnancy

• fully developed human being after birth

• the process of giving birth

menstrual cycle

• the monthly cycle of changes in the female reproductive system

• a weekly cycle of hormonal changes in males

• the process of ovulation occurring twice a month

• a cycle of physical exercise for women

egg (ovum)

• male reproductive cell

• female reproductive cell

• fertilized egg

• sperm cell

placenta

• organ through which an embryo/fetus receives nutrients/oxygen and gets rid of wastes

• structure that protects the embryo from infections

• tissue that forms the outer layer of the embryo

• fluid-filled sac that cushions the embryo

DNA

• the molecule that carries the genetic instructions for life

• a type of RNA involved in protein synthesis

• a protein that helps in cell division

• a lipid that stores energy in cells

ovulation

• the release of an egg from the ovary

• the process of fertilization

• the shedding of the uterine lining

• the development of follicles in the ovary

estrogen

• a hormone that regulates the menstrual cycle

• a male hormone responsible for muscle growth

• a hormone that controls blood sugar levels

• a hormone that affects mood and stress levels

sperm

• male reproductive cell

• female reproductive cell

• blood cell

• nerve cell

embryo

• developing human organism up until the eighth week of pregnancy

• the stage of development after the eighth week of pregnancy

• a fertilized egg before implantation

• the process of cell division in the uterus