Chapter 29:

Question 1

development

Answer 1

series of progressive changes including formation and organization of cell types

Question 2

pregnancy

Answer 2

• multiple anatomic and physiological changes
• postpartum effects too

Question 3

heredity

Answer 3

genetic triats (DNA) transmitted from parent to newborn

Question 4

gestation

Answer 4

pregnancy

Question 5

chromosomes

Answer 5

condensed, organized sticks of DNA

Question 6

genes

Answer 6

segments of DNA

Question 7

menses signals day __ of cycle

Answer 7

1

Question 8

2 weeks until

Answer 8

ovulation

Question 9

______________ can occur within 1-2 day window

Answer 9

fertilization

Question 10

prenatal period (pregnant) includes

Answer 10

2 weeks- preEmbryonic
6 weeks- embryonic
30 weeks- fetal
38 weeks total of pregnancy

Question 11

natal refers to

Answer 11

birth

Question 12

pre-embryonic period

Answer 12

• secondary oocyte + spermatozoan unite (fertilization)
• new complete cell formed (zygote)
• zygote becomes multicellular ball (blastocyst)
• which implants in the uterine endometrial lining

Question 13

embryonic period

Answer 13

• rudimentary versions of major organs appear
• blastocyst transforms into an embryo

Question 14

fetal period

Answer 14

embryo now called a fetus

Question 15

mitosis =

Answer 15

cleavage (same thing)

Question 16

zygote =

Answer 16

diploid

Question 17

human chorionic gonadotropin (hCG)

Answer 17

pregnancy hormone
- produced during implantation
- maintains corpus luteum
- hCG found in urine by end of 2nd week
- hCG levels decline after 3 months

Question 18

hCG is released from the ___________ when it implants in the uterus

Answer 18

blastocyst

Question 19

___________ produces estrogen and progesterone to maintain uterus

Answer 19

placenta

Question 20

placenta (afterbirth)

Answer 20

• highly vascular structure
• site of exchange between maternal and fetal blood
• produces estrogen and progesterone
• expelled from uterus after the baby is born

Question 21

first trimester

Answer 21

• first 3 months of pregnancy
• zygote becoming an embryo and then the early fetus

Question 22

second trimester

Answer 22

• months 4 to 6

Question 23

third trimester

Question 24

estrogen and progesterone

Answer 24

high hormone levels suppress FSH and LH secretion

Question 25

relaxin

Answer 25

• secreted by corpus luteum and placenta
• promotes blood vessel growth in uterus

Question 26

melanocyte-stimulating hormone (MSH)

Answer 26

• secreted by placenta
• darkening of areola and nipples
• darkens linea alba, now linea nigra

Question 27

labor

Answer 27

physical expulsion of fetus and placenta from uterus

Question 28

premature labor

Answer 28

labor prior to 38 weeks

Question 29

false labor

Answer 29

braxton-hicks contractions

Question 30

labor is a

Answer 30

positive feedback mechanism

Question 31

colostrum

Answer 31

• produced by mammary glands
• watery, milk-like substance
• lower concentration of fat than true breast milk
• rich in IgA

Question 32

inhibition of ovulation

Answer 32

• often occurs with regular breastfeeding
• GnRH inhibited (hypothalamus)