development- book

Question 1

the reproductive cells of the body are called?

Answer 1

gametes

Question 2

haploid cells have how many chromosomes

Answer 2

23

Question 3

the reproductive cells of the body are produced by what process

Answer 3

meiosis

Question 4

in meiosis what stage is skipped in between divisions

Answer 4

interphase

Question 5

after sperm cells are released they undergo a change called

Answer 5

capacitation

Question 6

after ovulation the oocyte must be fertilized within how many hours

Answer 6

24

Question 7

the oocyte is moved through the uterine tubes by the

Answer 7

cilia

Question 8

the sperm cells are attracted to the oocyte by a process called

Answer 8

chemotaxis

Question 9

sperm and oocyte unite through what process

Answer 9

fertilization

Question 10

the cell resulting from the union of the sperm and oocyte is

Answer 10

zygote

Question 11

the oocyte is surrounded by a protective barrier of cells called the

Answer 11

corona radiate

Question 12

the germinal period covers what weeks of development

Answer 12

first 2

Question 13

weeks 2-8 are what period of development

Answer 13

embryonic

Question 14

how long after fertilization does implantation occur

Answer 14

7 days

Question 15

the placenta and chorion will develop from the

Answer 15

trophoblast

Question 16

the organ responsible for the swapping of materials between the mother and fetus is the

Answer 16

placenta

Question 17

the layer which invades the uterine wall is the

Answer 17

syncytiotrophoblast

Question 18

the linings of the lungs and GI tract will develop from which germ layer

Answer 18

endoderm

Question 19

skeletal muscles and bones will develop from which germ layer

Answer 19

mesoderm

Question 20

the epidermis will develop from which germ layer

Answer 20

ectoderm

Question 21

skeletal muscles will develop from immature cells called

Answer 21

myoblasts

Question 22

the upper and lower limbs will begin to develop at the beginning of what week

Answer 22

4

Question 23

before birth there is a hole between the two atria called the

Answer 23

foramen ovale

Question 24

the second stage of labor involes

Answer 24

the baby exciting the body

Question 25

premature babies will most likely have trouble with what system

Answer 25

respiratory

Question 26

what is needed to reduce the attraction of water molecules in the alveoli

Answer 26

surfactant

Question 27

twins resulting from one fertilization are

Answer 27

monozygotic