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Sexual Reproduction TO THE MAX
Transcript of Sexual Reproduction TO THE MAX
to the Vas Deferans. And with that, the sperm go through
a water slide with a milky substance Provided by the prostate gland and seminal
vesicles. They produce this milky fluid in order for the sperm to easily get through the URETHRA. This is now traveling through the urethra! Eventually, these sperm will race to the death! Dashing past the cervix, vagina, uterus and eventually having to choose a fallopian tube to win over the egg of life. MAMA// And all the females in the house. Now, I'm going to dive in and explain the development of the ova (or egg as it is informally named as). In the OVARY Urethra Endometrium lining SEMEN! Eggs are formed in the ovaries, which is pretty obvious. The follicle releases the mature egg into the fallopian tubes (or oviducts) to make it's way into the uterus. The uterus gets ready to receive the egg by building up its nutrient and blood-rich lining called the endometrium! The penis would be erect and ejaculate in the vagina.
That on, the sperm would pass through the cervix and enter the uterus in search for the egg. That moment on, the fastest sperm would race
to the death to obtain the egg and share chromosomes with it. The other sperm die, which pretty much sucks for them. Once the sperm has fertilized the egg,
it is transformed into a zygote.
There on, the single-celled zygote will go through a rapid process called mitosis. In Interphase, the cell will duplicate all of its DNA.
After all of the DNA is duplicated, the cell begins for division. In Prophase, the nucleolus and the nuclear membrane disappear. Spindle fibers begin to form centrioles that have moved to opposite ends of the cell.
Spindle fibers will attach to each side of centromeres. In Metaphase, the tugging action of the
spindle fibers pulls the double stranded
chromosomes into a line across the middle
of the cell. In Anaphase, the spindle fibers begin to
contract and shorten. This action pulls the centromere apart, allowing one of each of the replicated strands to move to opposite ends (poles) of the cell. In Telophase, one complete set of chromosomes is now attached to each end of the cell.
The spindle fibers disappear, and a nuclear membrane forms around each set. Single stranded chromosomes start to uncoil into strands of chromatin. In Cytokinesis, The cell finally divides itself to create a new daughter cell.
And this process will keep going on and on. UNTIL... ... It is left with a blastocyst.
The blastocyst will finally attach to the endometrium for nutrients to develop into the next stage. Pssst... Of course, your conception and birth all started
when your parents met each other and made love
with each other.
It doesn't matter whether it was a one night stand, or a honeymoon night. They made love to each other and that's how this terrible mess has started.
Just kidding, you're not a mess.
Maybe. Rollo: So what's the prognosis, Fertile Myrtle? Minus or plus?
Juno MacGuff: I don't know. It's not seasoned yet.
Nope... There it is. The little pink plus sign is so unholy.
[shakes pregnancy tester]
Rollo: That ain't no Etch-A-Sketch. This is one doodle that can't be un-did, Homeskillet.
- Juno (2007) COOTIES. Love! is nothing but a serious of chemicals messing with your head when you grow attached to someone.
(Because let's get real here. This is a science project, not a Nicholas Sparks novel.) There are three stages of birth: Lust, Attraction, and Attachment. 1. Lust: The first stages of love that are driven by the sex hormones: testosterone and estrogen. 2. Attraction: This is when you are truly lovestruck and can think of little else but them. Them, them, them. There are three neurotransmitters are involved in this stage:
adrenaline, dopamine and serotonin. Adrenaline - Falling in love with someone activates your stress response, increasing your blood levels. This is the effect when you bump into your new love. You start to sweat and your heart races and your mouth goes dries. Basically, this person makes you feel like a total mess. Dopamine- Newly lovestruck couples have high levels of neurotransmitter dopamine.
That is because this chemical stimulates triggers an intense rush of pleasure.
This causes increased energy, less need for sleep and food and focused attention and delight to the relationship. You become this lovestruck zombie and it's really, really gross. Serotonin- One of love's most important chemicals. This chemical makes your lover pop into your thoughts constantly. It's like a bee's need for honey, like THEY NEED HONEY LIKE YOU NEED YOUR HONEY. And it all starts here folks! When two people of the opposite genders join forces to create the ultimate pleasure!
But of course, with great pleasure comes great sacrifice. Unless there was a condom in between. We all know that unprotected sex can lead to things such as...
Well, I don't know? Childbirth, perhaps? And that is what we will be discussing today.
Childbirth. Oh glorious, glorious childbirth! 3. Attachment: This is like the bond that keeps two people together long enough for them to have and raise children for themselves. Scientists think there might be two major hormones involved with this sick maneuver; Oxytocin and Vasopressin. Oxytocin- This is a powerful hormone released by women and men during orgasm. It deepens the feelings of attachment and makes couples feel much closer to one another after they have sex.
Oxytocin, as researched, is also responsible for a mother's breast to automatically release milk in the mere sight and sound of her young baby. Vasopressin- It is another important hormone in a long term commitment stage and is released after sex. It also works with your kidneys to control thirst. AND this is what love does to you. It manipulates your head with chemicals in order
for us human beings to reproduce.
Sounds delightful, no? C; And of course after a while, you start to feel
that you can trust this fellow human being
with all your secrets and toothbrushes and stuff
that... you get to be a little be more closer to them.
Like maybe you want to do them!
And you do.
Now let me go ahead and explain the process of how you came to be and how your parents created you the unholy, hideous thing you are <3 As mitosis continues to do it's job, the blastocyst will eventually develop into an embryo. Fetal Development! And with that ladies and gentlemen, is where I go ahead and finally put in the details of the Three Trimesters! for you, alright? alright. The First Trimester - (Weeks 1 -12) 4 Weeks - -The embryo produces hormones that will stop the mother's menstrual cycle.
-The cells have attached to the endometrium lining and has split into two parts: the cells for the baby and the cells for the placenta.
-The bone cells will soon develop, along with a nervous system and the organs taking shape. How mitosis works, yo: 5-7 Weeks- - The embryo's heart begins to beat, and would
be the size of a raisin.
- The baby's external features will begin to take form, like its facial features.
- It will develop his ears, a mouth and a tongue as well as its eyes.
-Hands and feet develop, having a paddle-like shape.
-Placenta begins to function, providing baby with nutrients. 8-9 Weeks- The baby is considered a fetus. - The fetus is now protected by the amniotic sac
and filled with fluid.
- The baby's head appears larger than the body, and that is because the brain is growing more rapidly.
- By now, the fetus would be constantly moving, but you wouldn't feel any fetal movement for several more weeks.
-All it's nerves, organs and muscles are in place and only beginning to function.
-Its arms and legs have lengthened, and the toes and fingers begin to develop. 11-12 Weeks- -The vital organs- the liver, kidneys, intestines, brain and lungs are almost fully formed and beginning to function.
-The brain is fully formed, meaning the baby can also feel pain.
- The eyelids now cover the eyes, and will remain closed until the seventh month to protect the delicate optical nerve fibers.
- The kidneys are developed and begin to secrete urine. The vocal chords are complete and sometimes the baby can silently cry. Juno MacGuff: You should try talking to it. 'Cause, like, supposedly they can hear you even though it's all, like, ten-thousand leagues under the sea.
-Juno (2007) The Second Trimester -(Weeks 12-26) 18 Weeks- - With an ultrasound, you can now find out whether the baby is a girl or a boy.
- If female, the vagina, uterus and fallopian tubes have formed. If male, the genitals are discernible. 20-22 Weeks- -The child can hear and recognize the mother's
- This is an important time for sensory development as the nerve cells are programming the 5 senses. These senses are now developing in a special part of your brain.
-If you read, talk or sing to your baby, it will be able to hear you in the uterus.
-Along with that, the eyebrows and eyelids are fully developed, and the fingernails cover the fingertips. 24 - 26 Weeks- - The unborn baby is covered with a fine, downy hair and the skin is protected by a waxy substance.
-The baby practices breathing by inhaling the amniotic fluid into developing lungs.
-The brain is growing rapidly while it takes up more space in the uterus. The Third Trimester -(Weeks 27-40 27-28 Weeks- - The baby's eyes begin to open around this time.
- The fetus has its own schedule of sleeping and being awake.
- It opens and closes it's eyes, and it may be able to know how to suck its own thumb. 29-30 Weeks - - The baby's muscles and lungs are continuing to mature.
- It's brain is already busy developing billions on neurons.
- The baby can now distinguish real sounds and voices. It is recommended to teach the baby by exposing it to music, literature or by simply talking to it. 32 Weeks - - The baby will grow increasingly large overtime. By then, the uterus would be getting way too small for the baby.
-It is still trying to move frequently, but you will notice a decrease of its movement due to the uterus getting smaller for it. 33-37 Weeks - - The baby is positioned with the head down position this time.
-The bones are pretty flexible, and they aren't completely joined to help ease the exit out of the birth canal.
- The baby's body is growing because it is developing fat layers.
- During this time, the mother will feeling the sensation of the baby dropping. This is called lightning; this feelings comes from the increased pressure of the lower abdomen. 38-40 Weeks - Full term! - At birth, the placenta will detach from the side of the uterus, and the umbilical cord will stop working when the child takes his first breath of air outside the uterus.
- The child's breathing will trigger changes in the heart that will force all blood to go through the lungs. And now, for the grand finale. The stages of birth! (P.S: There will be no gruesome pictures entailing the process, instead it will be replaced with Lisa Frank's artwork.) Dilation Stage (2-20 hr.) - Uterine contractions and Oxycontin cause the cervix to open, or dilate.
During this stage, the amniotic fluid is released through the vagina. This is the process called "breaking the water", and it is clearly a soaking experience. Eh? Explosion stage (0.5 to 2 hr.) - Contraptions in the uterus become so forceful that the baby is pushed through the cervix to the birth canal. As the baby moves around the canal, its head rotates, making it easier for its body to pass through the canal. Placental stage (10-15 min) - The placental and umbilical cord are expelled from the uterus. The process of the placental cord being moved out of the body is called the "afterbirth". It's kinda like you were hit by this gigantic earthquake and now you have the aftershock - only it's more personal and hurts ten times more. "And that is how you were born!" This is the end of the presentation! I hope you enjoyed looking at every single detail of my presentation and at least learned something from it! -Ivy <3333 Su-Chin: [protesting in front of the abortion clinic] All babies want to get borned! All babies want to get borned!