Chapter 17 Flashcards
Egg cell
Reproductive cell from the female that joins with a sperm cell to make a new life
Sperm cell
Cell from the male that enters the egg cell during fertilization
Uterus
Pear shaped organ inside the females body where the embryo is protected and nourished
Embryo
Developing organism from fertilization to about the eighth week of its development
Fetus
Developing organism from the end of the eighth week until birth
Placenta
A thick rich tissue that lines the walls of the uterus during pregnancy that nourishes the fetus
Umbilical cord
Tube that connects the mothers placenta to the fetus
Cervix
Entry to the uterus
Heredity
Passing of traits from there parents to their children
Chromosomes
Threadlike structures found within the nucleus of a cell that carry the codes for inherited traits
Genes
Basic units if heredity
Genetic Disorder
Caused partly or completely by defect if genes
Environment
Sum total of a persons surroundings
Parental care
Steps taken to provide for the health of a pregnant female and her baby
Birth defects
Abnormalities present at birth that cause physical and mental disability or death
Developmental tasks
Events that need to happen in order for you to grow toward becoming a healthy mature adult
Infancy
First year if your life
Toddlers
Children between the ages of one and tree who are learning to walk and talk
Preschoolers
Children between the ages of three and five
Puberty
Time when you start to develop physical characteristics of adults your gender
Chronological age
Age measured in years
Biological age
Determines by how well various body parts are working
Social age
Measured by your lifestyle and the connections you have with others
Fertilization
Joining of a male sperm cell and a female egg cell
