Reproduction/Development

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Sexual Reproduction

2 parents where the offspring can be different than the parents

Asexual Reproduction

1 parent where the offspring looks identical to the parent

Reproduction

To make more of the same kind ( not needed for the survival of an induvidial but needed for the survival of a species

Example of something that undergoes asexual reproduction

bacteria

An example of something that undergoes sexual reproduction

humans

Fertilization

When the sperm and egg unite

Time line of developing child

sperm+egg (gametes)---> Fertilization----> Zygote-----> gestation------> birth

Ovary

Produces eggs (By the hormones estrogen and progesterone)

Ovulation

When the egg is released from the ovary

Oviduct

The tube that lead from the ovaries to the utereus (Where fertilization occurs)

Uterus

where the body/fetus developes (large muscle where placenta forms)

Bladder

stores urine

Urethra

urine comes out here

Vagina

the openening through which the baby comes out

Cervix

The opening to the uterus

Rectum

Stores Solid wastes

Scrotum

Holds testes

Testicles

(Where testosterone is released)- makes sperm

Vas Defrens

Tube thats leads from the Scrotom to urethra

Urethra (Male)

tube that urine and semen leave the body

Penis

Allows for internal fertilization, sperm is realeased inside the femal and increases the changefor sperm to reach the egg

What The Menstrual Cycle is controled by

Hormones, also regulated by negative feedback

Ages of 10-14

When the Mentrual Cycle usually begins in females

Menstrual Cycle

A complex series of events which involves the interaction of the endocrine system and reproductive system

Average Length of the Menstrual Cycle

28 days

Menses

Latin- A month

4 phases of the Menstrual Cycle

Follicle Stag, Ovultion(Day 14) Corpus Luteum Stage, Menstruation- Uterine linging is shed, bleeding begins)

4 Hormoes involves in the Menstrual Cycle

FSH-Follicle Stimulationg hormone LH-Lutenizing Hormone, Progesterone, Estrogen

Menopause

A Perminant cessation of the Menstrual cycle

Pregnacy

A temporary cessation of the Menstrual cycle

Zygote

Chromosomes from the Sperm and eggs combine to form this

Placenta

Provides Nutrients and Proteins to the developing baby inside the womb

Cleavage, Mitosis, Cell Division

After a zygote forms it ungdergoes this

Blastula

A hollow ball of cells

Glastrula

After a zygote undergoes cleavage and forms into a blastula it forms into this and forms the layers Ectoderm, Mesoderm, and the endoderm

Differentiation

When the cells get their different jobs

Aniotic Sac

Cushions the baby

Umbeltical Cord

connects the baby to the placenta

Centromere

Where the Chromatids attach

Chromones

Made up of DNA whih carries cells genetic info passed from one generation to the next sister chromatids

Interphase

Before mitiosis, cell grows and replicates DNA

Propahse

Largest phase where the nuclear envelope disapears, chromosomes are visible, spindle froms fiber that guides the chromosomes where to go

Metaphase

The Chromosomes line up ib the middle of the cell

Anaphase

Seperates centrameres and moves apart from the oppisite poles

Telophase

Cell starts to tear, nucleus starts to form, chromosomes gather at the end of eah cell (clevage begins)

Cytokinesis

Cytoplasm splits (cleavage), this usually happens in telophases, results in 2 idemtical cells with identical number of chromosomes

Cell Division is controlled....

When cells come into contct with other cells they respond by not growing

Cancer

Uncontrolled cell division

Ends up in 2 cells that have the full number of chromosomes

Mitosis

diploid

2n (46 chromosomes in humans

Meiosis

Cell division that ends up with 4 cells that have half the number of chromosomes as the parents, sex cells has the same phases as mitosis just twice

Spermatogenis

Production of Sperm cells in testes

Oogenesis

Production of Egg cells in ovaries

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