Exam 1 Chapter 2 Flashcards
The pear-shaped muscular organ in a woman’s abdomen that houses the developing baby.
Uterus
The neck, or narrow lower portion, of the uterus.
Cervix
One of a pair of slim, pipelike structures that connects the ovaries with the uterus.
Fallopian tube
One of a pair of almond-shaped organs that contains a woman’s ova, or eggs.
Ovary
An egg cell containing the genetic material contributed by the mother to the baby.
Ovum
The union of sperm and egg.
Fertilization
The moment during a woman’s monthly cycle when an ovum is expelled from the ovary.
Ovulation
Male organs that manufacture sperm.
Testes
A threadlike strand of DNA located in the nucleus of every cell that carries the genes, which transmit hereditary information.
Chromosome
The material that makes up genes, which bear our hereditary characteristics.
DNA
A segment of DNA that contains a chemical blueprint for manufacturing a particular protein.
Gene
The first 14 days of prenatal development, from fertilization to full implantation.
Germinal stage
A fertilized ovum.
Zygote
The hollow sphere of cells formed during the germinal stage in preparation for implantation.
Blastocyst
The process in which a blastocyst becomes embedded in the uterine wall.
Implantation
The structure projecting from the wall of the uterus during pregnancy through which the developing baby absorbs nutrients.
Placenta
The second stage of prenatal development, lasting from week 3 through week 8.
Embryonic stage
A cylindrical structure that forms along the back of the embryo and develops into the brain and spinal cord.
Neural tube
A nerve cell
Neuron
The developmental principle that growth occurs from the most interior parts of the body outward.
Proximodistal sequence
The developmental principle that growth occurs in a sequence from head to toe.
Cephalocaudal sequence
The developmental principle that large structures (and movements) precede increasingly detailed refinements.
Mass-specific-sequence
The final phase of prenatal development, lasting seven months, characterized by physical refinements, massive growth, and the development of the brain.
Fetal stage
The earliest point at which a baby can survive outside the womb.
Age of viability
The structure that attaches the placenta to the fetus, through which nutrients are passed and fetal wastes are removed.
Umbilical cord
A bag-shaped, fluid-filled membrane that contains and insulates the fetus.
Amniotic sac
