Chapter 4 Vocab

Question 1

Sperm

Answer 1

Male sex cell

Question 2

Ovum

Answer 2

Female sex cell; also called the egg

Question 3

Conception

Answer 3

Union of the ovum and the sperm cells

Question 4

Zygote

Answer 4

A single cell formed at conception; also called a fertilized egg

Question 5

Fallopian Tubes

Answer 5

Two hollow tubes that connect to the uterus and have finger like projections that reach toward each ovary

Question 6

Uterus

Answer 6

Organ in which the baby develops and is protected until birth

Question 7

Genetic Factors

Answer 7

Traits that are passed through the genes

Question 8

Chromosomes

Answer 8

Threadlike structures that carry genes in living cells

Question 9

Dominant traits

Answer 9

Traits that always show in a person even if only one gene of the pair is inherited for that trait

Question 10

Recessive trait

Answer 10

Traits that typically do not show in a person unless both genes for the trait are inherited

Question 11

Multiple pregnancy

Answer 11

Pregnancy in which two or more babies develop

Question 12

Fraternal

Answer 12

Term used to describe children from multiple pregnancies who develop from two or more fertilized ova and differ in genetic makeup

Question 13

Chorion

Answer 13

Membrane that surrounds the baby in the uterus

Question 14

Identical

Answer 14

Term used to describe children from the multiple pregnancies who develop from one fertilized ovum and have the same genetic makeup

Question 15

Prenatal Development

Answer 15

Development that takes place between conception and birth

Question 16

Germinal Stage

Answer 16

First stage of prenatal development, lasting about two weeks after conception

Question 17

Amnion

Answer 17

Fluid-filled sac that surrounds the baby in the uterus

Question 18

Placenta

Answer 18

Organ filled with blood vessels that nourish the body in the uterus

Question 19

Umbilical Cord

Answer 19

Cord that connects the baby to the placenta

Question 20

Embryonic Stage

Answer 20

Second stage of prenatal development, lasting about six weeks

Question 21

Embryo

Answer 21

Medical term used to describe the unborn baby in the embryonic stage of development ( week 3 through 8 of pregnancy )

Question 22

Cartilage

Answer 22

Soft, elastic, flexible tissue that provides structure for the body

Question 23

Fetal Stage

Answer 23

The third stage of pregnancy, lasting from about nine weeks after conception until birth

Question 24

Fetus

Answer 24

Medical term used to describe the unborn baby in the fetal stage of development (week 9 until the end of pregnancy)

Question 25

Quickening

Answer 25

Movements of the fetus that can be felt by the mother

Question 26

Age of viability

Answer 26

Age at which most babies could survive if they were born (28th week of pregnancy)

Question 27

Cell

Answer 27

Smallest unit of like that is able to reproduce itself