fertilization

Question 1

process by which sperm and ovum the male and female gametes , or sex cells combine to create a single cell called zygote

Answer 1

fertilization/ conception

Question 2

occurs when an egg from
the mother is fertilized by a sperm from the father

Answer 2

conception

Question 3

In humans, the conception process begins with

Answer 3

ovulation

Question 4

fertilized ovum

Answer 4

zygote

Question 5

zygote attaches to the wall of the uterus

Answer 5

embryo

Question 6

next six weeks, the major
internal and external organs are formed,
each beginning at the microscopic level,
with only a few cells.

Answer 6

embryonic phase

Question 7

fluid-filled reservoir in which the embryo (soon to be known as a fetus) will live until birth, and which acts as both a cushion against
loutside pressure and as a temperature
regulator

Answer 7

amniotic sac

Question 8

organ that allows the exchange of nutrients between the
embryo and the mother, while at the same time filtering out harmful material

Answer 8

placenta

Question 9

links the embryo directly to the placenta and
transfers all material to the fetus

Answer 9

umbilical cord

Question 10

protect the fetus
from many foreign agents in the
mother’s system that might
otherwise pose a threat.

Answer 10

placenta and umbilical cord

Question 11

beginning at 9 weeks after conception

characteristic

Answer 11

fetus
growth

Question 12

weight of fetus

Answer 12

6-8 pounds

Question 13

begins to take on many characteristics of a human being

Answer 13

fetus

Question 14

begins to develop its senses, able to distinguish tastes and respond to sound

Answer 14

fetus

Question 15

23 single chromosomes because of a special kind of cell division

Answer 15

meiosis

Question 16

type of cell
division in sexually
reproducing organisms that
reduces the number of
chromosomes in gametes(the sex cells, or egg and sperm).

Answer 16

meiosis