Child Dev. Vocabulary

Front 1

ovum

Back 1

a mature female reproductive cell, especially of a human or other animal, that can divide to give rise to an embryo usually only after fertilization by a male cell.

Front 2

uterus

Back 2

the organ in the lower body of a woman or female mammal where offspring are conceived and in which they gestate before birth; the womb.

Front 3

fallopian tube

Back 3

either of a pair of tubes along which eggs travel from the ovaries to the uterus.

Front 4

sperm

Back 4

another name for semen

Front 5

conception

Back 5

Conception is the initiation of pregnancy, or when an egg and sperm form a union. It normally occurs in the ampulla of the uterine tube. In vitro fertilization (IVF) is a process by which conception occurs outside the body.

Front 6

prenatal development

Back 6

The process of prenatal development occurs in three main stages. The first two weeks after conception are known as the germinal stage; the third through the eighth week are known as the embryonic period, and the time from the ninth week until birth is known as the fetal period

Front 7

zygote

Back 7

a diploid cell resulting from the fusion of two haploid gametes; a fertilized ovum.

Front 8

embryo

Back 8

an unborn or unhatched offspring in the process of development

Front 9

amniotic fluid

Back 9

the fluid surrounding a fetus within the amnion.

Front 10

placenta

Back 10

a flattened circular organ in the uterus of pregnant eutherian mammals, nourishing and maintaining the fetus through the umbilical cord.

Front 11

umbilical cord

Back 11

a flexible cordlike structure containing blood vessels and attaching a human or other mammalian fetus to the placenta during gestation.

Front 12

fetus

Back 12

an unborn offspring of a mammal, in particular an unborn human baby more than eight weeks after conception.

Front 13

chromosomes

Back 13

a threadlike structure of nucleic acids and protein found in the nucleus of most living cells, carrying genetic information in the form of genes.

Front 14

genes

Back 14

a unit of heredity that is transferred from a parent to offspring and is held to determine some characteristic of the offspring.

Front 15

genome

Back 15

the haploid set of chromosomes in a gamete or microorganism, or in each cell of a multicellular organism.

Front 16

DNA

Back 16

deoxyribonucleic acid, a self-replicating material present in nearly all living organisms as the main constituent of chromosomes. It is the carrier of genetic information.

Front 17

dominant gene

Back 17

The first allele is dominant and the second allele is recessive. For genes on an autosome (any chromosome other than a sex chromosome), the alleles and their associated traits are autosomal dominant or autosomal recessive. Dominance is a key concept in Mendelian inheritance and classical genetics.

Front 18

recessive gene

Back 18

The first allele is dominant and the second allele is recessive. For genes on an autosome (any chromosome other than a sex chromosome), the alleles and their associated traits are autosomal dominant or autosomal recessive. Dominance is a key concept in Mendelian inheritance and classical genetics.

Front 19

infertility

Back 19

Infertility is “a disease of the reproductive system defined by the failure to achieve a clinical pregnancy after 12 months or more of regular unprotected sexual intercourse

Front 20

surrogate

Back 20

a substitute, especially a person deputizing for another in a specific role or office.