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OB- Exam1 > Conception > Flashcards

Conception Flashcards

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

A

progesterone

18
Q

______ prevents pregnancy

A

progestin

19
Q

(period/stage of growth)

conception to day 14

A

ovum

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

A

fetus

22
Q

(germ layer of cells)

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

A

ectoderm

23
Q

(germ layer of cells)

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

A

mesoderm

24
Q

(germ layer of cells)

digestive, respiratory, and parts of GU system formed

A

endoderm

25
Q

inner membranes that surround the baby

A

amniotic sac

26
Q
  • 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
A

amniotic fluid

27
Q

<300 mL of AF

associated with fetal kidney obstruction or renal agenesis

A

oligohydramnios

28
Q

> 2000 mL of AF

associated with esophageal atresia with severe CNS anomalies

A

polyhydramnios

29
Q

functions of amniotic fluid

A
  • protects fetus from mechanical injury and infection
  • maintains stable thermal environment
  • helps in fluid and electrolyte homeostasis
  • allows freedome of movement for baby
30
Q

when baby bounces against examiner’s hand

A

ballottment

31
Q

pH of amniotic fluid

A

alkaline

turns nitrazine paper blue

32
Q

amniotic fluid contains _____ and ______, which are the major component of surfactant

A

Lecithin and Sphingomyelin

33
Q

L/S ratio

A

2:1

34
Q

nursing action for rupture of membranes (ROM)

A

always check the fetal monitor for decelerations in fetal heart rate

35
Q

increase in _____ levels can indicate of pregnancy

usually found in the pregnancy tests

A

HCG (human chorionic gonadotrophin)

36
Q
  • provides nutrients (O2) and removes wastes (CO2) for the fetus
  • metabolizes drugs and other substances
  • produces hormones estrogen/progesterone for maintenance of pregnancy
A

placenta

37
Q

umbilical cord carries ___ arteries and ____ vein

A

2 arteries; 1 vein

38
Q

artery carries _____ blood while vein carries _____ blood

A

deoxygenated; oxygenated

39
Q

progesterone _____ uterine muscle

A

RELAXES;

can prevent spontaneous abortion; it slows down for the pregnancy to allow pro-life

OB- Exam1 (3 decks)

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