Bio: Skills Assesment

Testes

Produce and store sperm

_____ are produced in large numbers throughout a man’s life.

Sperm

Sperm are _____ cells (contain ____ normal number of chromosomes) made by ______.

haploid, 1/2, meiosis

Sperm are _____ than the egg and are ____ (swim using ____).

smaller, motile, flagella

Sperm provide _____ offspring with ___ chromosomes only.

human, 23

Testosterone

The male sex hormones made in the testes

Semen

The fluid that carries sperm

Semen contains ____ to give sperm energy.

sugar

Male Reproductive System

Testis, Vas Deferens, Penis/Urethra

Ovaries produce _____.

eggs

Eggs are _____ cells (contain _____ normal number of chromosomes) made by ______.

haploid, 1/2, meiosis

An egg isn’t fully developed until _______.

ovulation

Females are born with _______ eggs, enough for several lifetimes.

400,000

Eggs are the ______ cells in the body.

largest

Eggs do not ____ on their own.

move

Eggs contain ___ chromosomes and all cell _____ (mitochondria, ribosomes, cytoplasm) that the ______ will need to grow and develop.

23, parts, offspring

Female Reproductive System

Oviduct, Ovary, Uterus, Vagina

Put pictures in for diagrams

Ok

The menstrual cycle lasts _____ days (average).

28

Ovulation

Release of an egg (typically 1 per cycle)

Menstruation

Shedding of the uterine lining if fertilization doesn’t occur

If ______ occurs, the menstrual cycle temporarily stops.

pregnancy

The menstrual cycle is controlled by 4 hormones called

FSH, LH, estrogen, progesterone

The oviduct/Fallopian tubes

Carry the egg to the uterus

FSH and LH are made where?

The pituitary gland

Estrogen and progesterone are made where?

The ovaries

Uterus

The womb where the baby develops

Vagina

Birth canal where the baby leaves the mother’s body

Fertilization occurs where?

In the oviduct/Fallopian tube

Fertilization

Restores the diploid number of chromosomes (2n = homologous pairs)

Zygote

Fertilized egg

Cleavage

A form of mitosis when cells develop rapidly but do not differentiate. This forms an embryo

The embryo plants into the _____ of the uterus after ______.

wall, cleavage

Fertilization and early development forms a single-celled _____ which begins the process of ______ which eventually creates a layered ball of cells that form the ______. ________ begins as the cell layers specialize and become different types of body cells.

zygote, mitosis, embryo, Differentiation

Differentiation

3 cells are formed, cells begin to specialize

What 3 cell layers are formed during differentiation?

Ectoderm, mesoderm, endoderm

Fetus

Most major organs are formed and continue to grow through cell division (mitosis)

The _____ transfers _____ and ______ from the mother’s blood into the blood of the fetus through ______.

placenta, nutrients and oxygen, diffusion

The _____ of the mother and fetus don’t mix.

blood

The fetus is attached to the placenta by the _____ ______.

umbilical cord

The developing baby is affected by small amounts of ______, _____, and whatever the mother takes in because the baby’s ______ and systems are still forming and growing.

alcohol, drugs, organs

Waste products by the fetus are removed by the ______.

placenta

Waste (CO2, urea, salts) ______ from the placenta into the mother’s _______.

diffuse, blood

Since the fetus does not eat solid food, it doesn’t have to eliminate ______.

feces

The _____ ______ is filled with fluid gto protect and cushion the fetus.

amniotic sac

True or False: The sperm fertilizes the egg in the oviduct/Fallopian tube.

True!

True or False: The baby grows inside the mother’s stomach

FALSE!!! The baby develops in the uterus

True or False: The placenta and umbilical cord diffuse nutrients and oxygen to the baby from the mother’s bloodstream.

True!!

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