Micro Anat Abnormal Amnio Placenta

Front 1

when does the blastocyst implant into the endometrium

Back 1

2nd week post fetilization

Front 2

what does the embryoblast develop into?

Back 2

embryo proper

Front 3

what are cytotrophoblasts connected by?

Back 3

desmosomes

Front 4

decidual cells are derived from?

Back 4

endometrial stroma

Front 5

what is this?
large, high lipid/glyc content, pas positive, protect blastocyst from immune reaction, secrete prosta's and prolactin

Back 5

decidual cells

Front 6

when does the blastocyst implant into the endometrium

Back 6

2nd week post fetilization

Front 7

what does the embryoblast develop into?

Back 7

embryo proper

Front 8

what are cytotrophoblasts connected by?

Back 8

desmosomes

Front 9

decidual cells are derived from?

Back 9

endometrial stroma

Front 10

what is this?
large, high lipid/glyc content, pas positive, protect blastocyst from immune reaction, secrete prosta's and prolactin

Back 10

decidual cells

Front 11

endometrium located between the myometrium and the chorion frondosum, contributes to placenta

Back 11

decidua basalis

Front 12

endometrium located between the embryo and the uterine lumen

Back 12

decidua capsularis

Front 13

remainder of uterine endometrium on the wall opposite the implantation site

Back 13

decidua parietalis

Front 14

where is the chorion derived from?

Back 14

trophoblast

Front 15

villous of feathery part of chorion adjacent to decidua basalis(contributes to placents)

Back 15

chorion frondosum

Front 16

smooth part of chorion adjacent to the decidua capsularis

Back 16

chorion laeve

Front 17

maternal blood flows through spaces in the chorion and is in direct contact with the cells of the chorion. This is called?

Back 17

hemochorial placenta, note however that there is a complete seperation of maternal and fetal blood

Front 18

when are the primary, secondary and tertiary villi formed?

Back 18

primary - 11-13 days post ovulation
secondary - 16 days
tertiary - 3rd week and beyond

Front 19

what is the core of a secondary villi made of?

Back 19

mesenchyme from the mesoderm

Front 20

what does the placental barrier include when it's thick? when it's thin?

Back 20

syncyciotrophoblast, *discontinuous cytotrophoblast, trophoblast basal lamina, *CT, fetal caps basal lamina, fetal cap endothelium

Front 21

fused with the decidua basalis, attach anchoring villi, outer covering of the fetal part of placenta, interrupted by maternal blood vessels

Back 21

cytotrophoblast shell part of the chorion frondosum

Front 22

fetal side of the placenta, large branches of umbilical arteries and veins of fetal circulation

Back 22

chorionic plate

Front 23

what are the two sides of the chorionic plate?

Back 23

smooth amniotic cells, cyto and syncytiotrophoblast

Front 24

where do stem villi arise from?

Back 24

the chorionic plate

Front 25

what are the names of villi that branch from the sides of stem villi and dont fuse w/ decidua basalis

Back 25

free, terminal or branch villi

Front 26

formed by decidual partitions that grow into the maternal blood space

Back 26

cotyedons

Front 27

how many cotyledons in one placenta

Back 27

15-25

Front 28

what cells produce acidophilic PAS pos material called fibrinoid?

Back 28

decidual cells (found under cotlyedons heading)

Front 29

where do spiral arteries of the mother empty into?

Back 29

intervillous space, blood flows to the chorionic plate initially represented by the lacunae of the syncycio

Front 30

in the fetus, where does poorly oxygenated blood flow from? and what does it flow through?

Back 30

flows from fetus to placents through paired umbilical arteries

Front 31

in fetus, where does highly oxygenated blood flow from? what does it flow through

Back 31

flows from palcenta to fetus through a single umbilical vein

Front 32

what does the umbilical cord become covered by?

Back 32

the amnion(simple cuboidal epithelium)

Front 33

contain main branches from the umbiical arteries and veins, branch repeatedly, which increases SA for metobolic exchange

Back 33

stem villi

Front 34

how can anchoring villi mix maternal blood?

Back 34

anchoring villi contract to mix maternal blood

Front 35

bathed by maternal blood in intervillous spaces

Back 35

tertiary villi

Front 36

aggregates of syncytiotrophoblast nuclei

Back 36

syncytial knots, may break off and enter maternal circulation

Front 37

sparse microvilli, no terminal web, actin near cell surface, mito w/ both tubular and shelf cristae, lipid droplets, multivesicular bodies, share basement membrane with some of the fetal capillaries

Back 37

syncytial cells of the tertiary villi, have properties of absorptive cells, protein and steroid secreting cells

Front 38

macrophages located in the core of the tertiary villous are called?

Back 38

hofbauer cells

Front 39

what cells are mainly responsible for absorption in teh placenta?

Back 39

syncytio

Front 40

what Ig_ can cross the placenta?

Back 40

IgG

Front 41

what cells mainly produce glycogen, cholesterol and fatty acids(metabolites) and steroid hormones (estrogen/progesterone)

Back 41

syncytio

Front 42

maintains pregnancy, precursor is from the fetal adrenal cortex

Back 42

estrogen

Front 43

maintains pregnancy, placenta takes over its production from the corpus luteum

Back 43

progesterone

Front 44

maintains corpus luteum, especially during early pregnancy, homologous to TSH in stimulating maternal thyroid to produce T4,

Back 44

hCG

Front 45

growth promoting and lactogenic hormone, other name hPL(human placental lactogen), regulates glucose metabolism,

Back 45

hCS

Front 46

what hormone stimulates mammary duct proliferation

Back 46

hCS

Front 47

where is hCS produced?

Back 47

the syncytio

Front 48

when does hCG production begin?

Back 48

around day 6 of pregnancy

Front 49

what is produced by and stimulates the proliferation of the cytotrophoblast?

Back 49

IGF-I and IGF-II

Front 50

maintains the function of the differentiated trophoblast

Back 50

endothelial growth factor

Front 51

where is endothelial growth factor produced?

Back 51

early - cytotrophoblasts,
later - syncyciotrophoblasts

Front 52

contributes to softening of the cervix/pelvic ligaments,

Back 52

relaxin

Front 53

what cells produce relaxin?

Back 53

decidual cells

Front 54

regulates maternal nutrient storage relative to the requirements of the fetus

Back 54

leptin

Front 55

where is leptin produced?

Back 55

the syncyciotrophoblast

Front 56

stiumulates the prolifertion of breast tissue and milk production

Back 56

prolactin

Front 57

where is prolactine produced?

Back 57

produced by decidual cells

Front 58

involved in the initiation of partutition, produced by decidual cells

Back 58

prostaglandins