Lab 16: Gestation and Contraception

Sperm

male gamete

Head of sperm

name this region

Neck of sperm

Name this region

Middle piece of sperm

name this region

Tail of Sperm

name this region

Oocyte

Female gamete

Secondary oocyte

Once in the uterine tube after fertilization. Secondary oocyte is what becomes fertilized.

Corona radiata

Layer of cells that surrounds the oocyte when it is ovulated that protect the egg

Corpus luteum

Blastomere

2, 4, 8 cell stages

Morula

When the cell begins to differentiate

16 or more cells

Blastocyst

Blastocoele

The space or cavity inside the blastocyst

Name this SPACE

Trophoblast

- Outer layer of the blastocyst

- One single layer thick outer layer

- will become the placenta

Name this LAYER

Inner cell mass

Cells on the inside of the blastocyst

- Will become the fetus

First trimester

The first 13 weeks after the last menstrual period

12 weeks

- Rudimentary organ systems have formed

- Fetus is about 3 inches long

- Fetus weighs about 0.5 lbs

Second trimester

Weeks 14-26 after the last menstrual period

16-20 weeks

Fetal movements become perceptible around..........

25 weeks

- Fetus is about 9 inches long

-Fetus weighs about 1.4 lbs

-Eyelids open

Third trimester

Weeks 27-40 after the last menstrual period

38 weeks

- Average weight is about 7 lbs

- Average length is about 14 inches

Pre-term baby

Refers to babies born prior to 37 weeks gestation

Term baby

Refers to babies born between 37-40 weeks gestation

Post-term baby

Refers to babies born at greater than 40 weeks gestation

Yolk sac

Placenta

Umbilical cord

Umbilical arteries (2)

carry deoxygenated blood from the fetus to the placenta

Umbilical vein (1)

delivers oxygenated blood from the placenta to the fetus

Amniotic cavity

name this SPACE

Amnion

name this LAYER

(white)

Chorion

name this LAYER

Chorionic villi

Decidua capsularis

Only touches the baby

C

Decidua parietalis

Only touches the mother

B

Decidua basalis

Touches both the baby and the mother

A

Male condom

Lamb skin condoms do not protect against infections

-Non-hormonal

Female condom

Has a closed end and open end

-Non-hormonal

Diaphragm

Bigger and looks like a bowl

-Non-hormonal

Cervical cap

Smaller and looks like a bottle top

-Non-hormonal

Sponge contraception

A sponge structure similar to cervical cap

-Non-hormonal

Non-hormonal Intrauterine device (IUD)

Placed in the uterus by a physician prevents egg and sperm from fusing

-Non-hormonal

Spermicide

Condoms and diaphragms are often full with it

-Non-hormonal

oral contraceptives

the "pill"

-Hormonal

Injection

Depo-pavera

-Hormonal

Patch

-Hormonal

Progestin implant

in the arm

-Hormonal

Vaginal ring

ring that releases hormones

-Hormonal

Intrauterine device (hormonal)

IUD that ejects hormones

-Hormonal

Vasectomy

surgical procedure that removes all or part of the deferens deferns that prevents sperm to travel through the urethra

-Permanent method

Tubal ligation

blocking or cutting of the fallopian tubes to prevent fertilization from occurring

-Permanent method

intra-uterine tube coil placement

Results in the coil producing scar tissue in the uterine tubes that prevents the release of eggs

-Permanent method