Conception Flashcards

(39 cards)

1
Q

Meiotic process by which male gametes are produced

A

spermatogenesis

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2
Q

Meiotic process by which female gametes are produced

A

oogenesis

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3
Q

production of sperm begins at puberty in response to _________ (male hormone)

A

testosterone

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4
Q

pH of sperm

A

slightly alkaline

helps neutralize the normally acidic female vagina

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5
Q

lifespan of sperm

A

48-72 hours after ejaculation

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6
Q

average time for sperm to travel to egg

A

4-6 hours; but can be as little as 5 minutes

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7
Q

oocytes form by ____ weeks of gestation

A

12

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8
Q

ovulation occurs _____ days before the next menstrual period

A

14 +/- 2 days

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9
Q

of chromosomes

A

46 total
23 from each parents
22 pairs of chromosome, leaving 2 chromosome to determine the sex

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10
Q

_____ secretes HCG to make sure that the corpus luteum remains viable

A

blastocyst

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11
Q

16 cells (3rd day)

first weeks of human development

A

morula

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12
Q
outer layer of cells;
develops projections (chorionic villi)

(first weeks of human development)

A

trophoblast

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13
Q

inner layer of cells; outer layers are chorionic villi; implants 6-7days after fetilization

(first weeks of human development)

A

blastocyst

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14
Q

corpus luteum secretes _____ and ______ first 2-3 months of pregnancy

A

estrogen and progesterone

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15
Q

blastocyst is implanted ______ days after ovulation

A

6-8 days

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16
Q

site of implantation

A

upper portion of uterus

17
Q

______ changes cervical mucus and endometrium to mature the uterine lining for implantation

18
Q

______ prevents pregnancy

19
Q

(period/stage of growth)

conception to day 14

20
Q

(period/stage of growth)

day 15 to 8 weeks
most critical time
organs are forming

A

embryonic stage

21
Q

(period/stage of growth)

8 weeks to birth

22
Q

(germ layer of cells)

trophoblast (outer layer) develops into the placenta, integument, neural tissue and glands

23
Q

(germ layer of cells)

forms muscles, bones, connective tissue, circulatory system, and genitourinary system

24
Q

(germ layer of cells)

digestive, respiratory, and parts of GU system formed

25
inner membranes that surround the baby
amniotic sac
26
- within the sac and around the baby - source of oral fluid for fetus - repository for wastes (urine and meconium) - assists in lung development - transparent yellow liquid
amniotic fluid
27
<300 mL of AF associated with fetal kidney obstruction or renal agenesis
oligohydramnios
28
>2000 mL of AF associated with esophageal atresia with severe CNS anomalies
polyhydramnios
29
functions of amniotic fluid
- protects fetus from mechanical injury and infection - maintains stable thermal environment - helps in fluid and electrolyte homeostasis - allows freedome of movement for baby
30
when baby bounces against examiner's hand
ballottment
31
pH of amniotic fluid
alkaline turns nitrazine paper blue
32
amniotic fluid contains _____ and ______, which are the major component of surfactant
Lecithin and Sphingomyelin
33
L/S ratio
2:1
34
nursing action for rupture of membranes (ROM)
always check the fetal monitor for decelerations in fetal heart rate
35
increase in _____ levels can indicate of pregnancy usually found in the pregnancy tests
HCG (human chorionic gonadotrophin)
36
- provides nutrients (O2) and removes wastes (CO2) for the fetus - metabolizes drugs and other substances - produces hormones estrogen/progesterone for maintenance of pregnancy
placenta
37
umbilical cord carries ___ arteries and ____ vein
2 arteries; 1 vein
38
artery carries _____ blood while vein carries _____ blood
deoxygenated; oxygenated
39
progesterone _____ uterine muscle
RELAXES; can prevent spontaneous abortion; it slows down for the pregnancy to allow pro-life