Lecture 1 & 2

Question 1

what is gestation?

Answer 1

period between conception (fertilization) and birth

Question 2

latin for offspring

Answer 2

fetus

Question 3

pre-natal

Answer 3

before birth

Question 4

general term for embryonic connective tissue

Answer 4

mesenchyme

Question 5

formation of a mature oocyte/egg from a small germ cell precursor initiated during embryonic period

Answer 5

oogenesis

Question 6

One of two small cells produced with the ovum (oogenesis) during meiosis and then degenerates; it cannot be fertilized

Answer 6

polar body

Question 7

back

Answer 7

dorsum

Question 8

belly

Answer 8

ventral

Question 9

beak or nose

Answer 9

rostral

Question 10

tail

Answer 10

caudal

Question 11

ploidy

Answer 11

number

Question 12

what is a diploid cell

Answer 12

double the number of chromosomes found in a mature germ cell (egg or sperm)

Question 13

what type of cells are human cells

Answer 13

diploid cells (23 pairs of chromosomes (46 chrom) and two germ chrom (XX or XY

Question 14

what type of cell is an egg or sperm cell (germ cells)

Answer 14

haploid cells
23 chromosomes

Question 15

these are haploid cells with half the number of chromosomes as the somatic cells

Answer 15

germ cells (egg and sperm)

Question 16

development of a human begins with

Answer 16

fertilization

Question 17

what does fertilization result in

Answer 17

new organism
single celled zygote

Question 18

what is a zygote

Answer 18

diploid cell with 22 autosome and 1 sex chrom from each parent (total of 46 chrom)

Question 19

does a zygote multiply

Answer 19

yes

Question 20

when does a zygote multiple its cells

Answer 20

3 to 4 days post fertilization

Question 21

what enters the uterine cavity

Answer 21

morula
zygote multiplied cells post fertilization

Question 22

what implants into the uterus

Answer 22

blastocyst

Question 23

when the cells arrange in an inner and outer cell mass and implant into the uterus

Answer 23

blastocyst

Question 24

small haploid cell that is formed concomitantly as an egg cell during oogenesis

Answer 24

polar body

Question 25

what does most of the placenta develop from

Answer 25

trophoblast

Question 26

doesn’t have the ability to be fertilized and degenerates

Answer 26

polar body??

Question 27

what are the 4 early stages of development

Answer 27

zygote
morula
blastocyte
baby

Question 28

when female is born, all eggs are formed during the embryological period

Answer 28

oogenesis

Question 29

process of development of germ cells (egg/sperm, all other cells in body are somatic cells)

Answer 29

meiosis

Question 30

all other cells development process

Answer 30

mitosis

Question 31

cannot be fertilized
degenerates - there and then goes away

Answer 31

polar body

Question 32

total # of chrom in humans?

Answer 32

46

Question 33

egg and sperm are

Answer 33

half the number (23)

Question 34

female chrom makeup

Answer 34

XX

Question 35

male chrom makeup

Answer 35

XY

Question 36

each egg and sperm has ____ chrom each and when combined they make the total number to make a human

Answer 36

23

Question 37

what type of cell is a germ cell

Answer 37

haploid

Question 38

what type of cells are human cells?

Answer 38

diploid (23+23=46)

Question 39

what is the makeup of human diploid cells?

Answer 39

44 somatic cells and two germ cells (XX or XY)

Question 40

rapidly dividing ball of cells

Answer 40

blastocyst

Question 41

what gives rise to all 3 germ layers

Answer 41

epiblast