Chap 27

Front 1

the time spent in prenatal development

Back 1

gestation

Front 2

outer layer of blastocyst that cna penetrate the endometrium

Back 2

trophoblast

Front 3

hollow cavity within blastocyte

Back 3

blastocoele

Front 4

first 12 weeks of gestation establish _______, for organ formation

Back 4

organogenesis

Front 5

identical cells produced by cleavage

Back 5

blastomeres

Front 6

process by which a viable embryo is formed

Back 6

embryogenesis

Front 7

placental functions are concentrated in disc shaped area in endometrium

Back 7

decidua basalia

Front 8

portion of endometrium not in contact with the chorion

Back 8

decidua parietalis

Front 9

___ is formed by the allantois, blood vessels and yolk sac

Back 9

umbilical cord

Front 10

blood vessels that carry deoxygenated

Back 10

umbilical arteries

Front 11

carry oxygenated blood

Back 11

umbilical vein

Front 12

uterine contraction that are irregular and brief that occur toward the end of gestation

Back 12

false labor

Front 13

trimester is

Back 13

3 months ong

Front 14

incision is made in perineal musculature

Back 14

episiotomy

Front 15

polyspermia is prevented by

Back 15

cortical

Front 16

stage is the stage of labor during which the placenta is expelled from the uterus

Back 16

placental

Front 17

period extends from birth to 1 month

Back 17

neonate

Front 18

1 months to 2 yrs

Back 18

infancy

Front 19

period from 2 yrs to puberty

Back 19

childhood

Front 20

human gametes chromosome

Back 20

23

Front 21

chromosome human somatic

Back 21

46

Front 22

original 46 chromosomes and their component genes constitue an individuals

Back 22

genotype

Front 23

traits of individual controlled by his or her genotype

Back 23

phonotype

Front 24

allele will always be expressed regardless

Back 24

dominant

Front 25

only with homozygous

Back 25

recessive

Front 26

fusion of secondary oocyte and spermatozoon

Back 26

zygote

Front 27

chromosomes determine gender

Back 27

sex chromosome

Front 28

appear on x chromosome are to be

Back 28

x linked

Front 29

zygote whose genotype XX

Back 29

female

Front 30

xy

Back 30

male

Front 31

twins two different ova

Back 31

dizygote

Front 32

same ova twin

Back 32

monozygote

Front 33

identical twins share body structure

Back 33

conjoined

Front 34

amnionic fluid removed and anlayzed

Back 34

amniocentesis

Front 35

developmental period heralded by onset of puberty is known as

Back 35

adoolescence

Front 36

formation of diff types of cells required in devleopment, occurs through selective changes in genetic activity

Back 36

differnetiation

Front 37

5-6kg baby

Back 37

850milk

Front 38

lood flows to the placenta through

Back 38

2 umbilical arteries

Front 39

clear liquid before milk

Back 39

colostrum

Front 40

is the percentage of individuals with a particular genotype that actually show the expected phenotype

Back 40

penetrance

Front 41

gradual modification of anatomical structure an dphysiological characteristic

Back 41

development

Front 42

amphimixis marks the actual moment of conception

Back 42

true

Front 43

fertilization normally occurs within uterine tube

Back 43

true

Front 44

fetal hemoglobin has lower affinity for oxygen than maternal hemoglobin

Back 44

false

Front 45

umbilical cord contains a pari of arteries and a pair of veins

Back 45

false

Front 46

blood in umbilical arteries is oxygenated

Back 46

false

Front 47

ectopic pregnancy occurs in one pregnancy out of thousand

Back 47

false