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Transcript of Development Project
Anatomy Honors Prenatal Fertilization: When the egg and the sperm come together. Recieving 23 chromosomes from each parent. Week One About 12 hours after fertilization a one-celled zygote divides into two identical cells. This continues as the total number of cells in your baby doubles every 12 hours.
The zygote is moving down the fallopian tube to your uterus. Week Two After dividing the zygote becomes a ball of cells known as a Morula.
As the Morula divides it becomes a hollow ball of cells called a Blastocyst.
The Blastocyst implants in the uterine lining Three distinct layers develope from which all of the organs will form.
Cells continue dividng, the baby is about 1/25th of an inch long. The 3 germ layers The germ layers will form all of the body's cells later in development Placenta Begins to form
Carries nutrients to the baby.
Continues to thicken until the fourth month of pregnancy.
Although it's made up of shared tissue, the placenta does NOT allow blood from the mother and the baby to come in direct contact. Placenta at later stage of development At week two the developing baby is known as an embryo Week Three Embryo at 3 weeks The heart and circulatory system take shape.
The embryo's earliest blood vessels form.
Toward the end of week 3 the heart begins to beat.
The umbilical cord replaces the yolk sac.
Foundations of the brain, spinal cord, and nervous system are established
The baby is the length of the tip of a pen (about 1/17 inches) Week Four Clearly visible on an ultrasound.
The embryo is about 1/8 of an inch long, about the size of a grain of rice.
The nervous system and all major body organs are the first to start forming.
The embryo's heart beats about 80 times per minute and gets faster each day. An Ultrasound uses high frequency sound waves that bounce back to create images. Similar to a bat's echolocation. Week Five 1/3 to 1/2 of an inch long.
The embryo's face becomes more defined: mouth, nostrils, and ears begin to appear.
The lenses in the baby's eyes begin to form.
Arms, shoulders, hands, legs, and feet begin to take shape.
The baby's brain becomes more complex. The skull that's growing to protect it is transparent and rounding. Week Six The baby is more than half an inch long, around the length of a lima bean.
Tiny fingers and toes develop.
Arms and legs grow longer.
Wrists, elbows, and ankles are slightly visible.
His eyelids form and ears, upper lip, and nose tip become more defined.
Brain waves can be detected and recorded with an electroencephalogram (EEG). six week old embryo Week Seven Baby grows to about one inch, or about the length of an olive.
The skeleton begins to harden. Hardening of the bones (ossification) begins with the formation of cartilage.
Fingers, toes, knees, and elbows develop.
Nipples and hair follicles form.
Intestinal system starts to form.
The reproductive organs begin to develop internally.
Muscles develop and the baby may start to move. Week Eight Finally is now called a Fetus! Measures more than one inch, or roughly the length of a quarter.
All of the baby's vital organs have formed.
His embryonic tail, located at the bottom of his spinal cord, has disappeared.
Teeth buds emerge and eyelids develop further.
The testes start producing the male hormone testosterone.
Fingers and toes are fully separated (no more webbing).
Every minute, 250,000 new neurons (or first brain cells) are produced. (wow!) Month 3 From now until the halfway mark of pregnancy, the fetus will increase its weight by 30% and probably triple in length.
The blood vessels in the placenta grow larger to prepare for the rapid growth.
By the 10th week the doctor might be able to hear the fetus' heartbeat for the first time, using a special Doppler device.
Eyes and ears are clearly defined. The baby's eyelids are fused together to protect the still-developing eyes.
Vocal chords develop.
In boys, the prostate gland is forming. In girls, ovaries are moving into her pelvis from her abdominal area.
The baby's thyroid gland now is working and making hormones.
The fetus begins growing body hair (called lanugo) which will temporarily keep the fetus warm until baby fat accumulates. Month 4 The baby's skin is developing, but remains extremely thin.
Skeletal system and muscles further develop and strengthen.
The muscles throughout the baby's body are beginning to work.
Skeletal and nervous systems connect enough to allow the fetus to coordinate movement.
Developed facial muscles make it possible for the baby to frown, squint, or even smile.
Brown fat develops under the baby's skin. This helps keep the baby warm after birth. Later in pregnancy, additional layers of fat develop.
Air passages in the lungs finish branching.
The baby is about 5 1/2 inches long, or about the length of a large tomato.
Its leg bones and inner ear bones are the first to ossify.
The baby now can hear! It might hear the mother's heartbeat and loud noices outside of the womb. Month 5 Baby's brain develops millions of motor neurons. The baby can now make purposeful and involuntary movements.
The mother can feel the baby's movements by now.
The baby's skin is covered in a white, waxy, protective coating called vernix.
Kidneys fully function.
Hair and nails continue to grow.
The digestive system begins to work. The fetus can swallow amniotic fluid and absorbing small amounts of sugar from it.
Most of its nutrition is still delivered through the placenta and the umbilical cord.
The bone marrow, rather than your baby’s liver and spleen, takes over the permanent job of making red blood cells.
The baby is about 7 1/2 to 8 inches long head to rump, and weighs about 1 pound.
The sensation of touch develops
The brain begins to develop folds. It was smooth before.
The baby continues to hear sounds. The baby is able to recognize it's mothers voice. Month 6 The lungs are making surfactant, it allows the lungs to inflate and deflate without collapsing or sticking together.
Blood vessels in the lungs are growing in preparation for breathing.
The baby can make breathing-like movements, moving amniotic fluid in and out of its lungs. (This prepares it for breathing after birth, and develops diaphragm muscles)
The baby actually looks like a baby and not like an alien or a little monster
The inner ear, which controls balance (learned that in class!), has finished developing. The baby can realize which way is right side up.
The baby's hands are fully developed. It can even can make a fist.
The nerve connections continue to develop as the baby uses its hand to explore it's womb.
Thebaby weighs 1 1/2 to 2 pounds, and is about the length of a small pineapple.
The hair on its head grows and thickens.
Footprints and fingerprints begin forming. Is that a smile? Month 7 Brain continues to develop and expand.
May start to open its eyes .
At 7 months (28 weeks) the baby weighs about 3 pounds and is about 10 1/2 inches long from head to rump
From now until week 35 of pregnancy, the baby gains half a pound each week.
The Baby continues practicing breathing movements.
The brain continues to develop. It creates more folds in the brain's surface.
The baby's brain now has the ability to regulate temperature. Due to this the fetus starts to lose the lanugo. Cute baby sleeping in his womb Month 8 The lungs are now more developed but are not completely mature.
Trillions of brain connections develop, the baby is already using all five senses before it is even born.
The baby's skin is no longer see-through. It looks more like ours.
The baby's pupils can now constrict to bright light or dialate to dim light.
It probably weighs about 5 1/2 pounds and is about 12 1/2 inches, about as long as a loaf of bread, from head to rump (plus an additional 5 inches or more counting legs).
The vernix thickens each week. Its a waxy like coating that protects the baby's skin.
The lanugo has been falling off, and is almost gone. 9 Months! During the 33rd week of pregnancy, the baby is already close to its birth lenght. About 18 inches from head to toe.
The baby might have settled into a head-down position. This is ideal for birth.
Your baby has grew completely into its once oversized skin.
The baby's bones are hardening, but the skull remains soft and flexible for his birth. It will fuse more at the sutures after birth.
Essential fat (baby fat) continues to form. This will help keep the baby warm after birth.
The waxy vernix and the lanugo start to go away, although some might remain after birth.
I's normal for the baby to weigh anywhere from 6 to 9 pounds.
The its normal for the baby to measure between 18 and 20 1/2 inches long
A surge of hormones in the baby's body is important to initiating labor. Birth! The baby's foramen ovale closes and the two atria are separated.
Ductus arteriosus closes, blood doesnt flow between the pulmonany trunk and aorta anymore.
Umbilical veins and arteries die.
The newborn's stomach begins to secrete acid.
The baby can digest lactose, while other foods can be gradually introduced. 1-3 Months The baby can hold its head up at 1 month, and its chest up at 2 months.
Able to grasp things.
At 3 months able to see faces and recognize some objects. 4-6 Months Can sit when supported.
Starts to drool.
Baby can laugh or giggle.
Baby makes constant sounds.
Continues playing with hands.
Can tell family and strangers apart.
Can hold objects. 7-9 Months At around 7 months the baby can sit up without help.
Enjoys banging on surfaces.
Can stand while holding on to furniture.
Starts to understand certain words.
The baby develops a preference of one hand over the other.
Understands single verb commands.
Teeth start growing. 10-12 Months At 10 months the baby can crawl.
Understands simple words like "mama".
Can stand upright without any help.
At a year old most babies can already walk.
Recognizes objects and toys by name. 13-15 Months A baby will start walking well on its own.
Some babies will start running.
Seperation anxiety lessensn when the child is alone for a short time.
Coordination and language skills continue improving.
Might be able to climb stairs and other obstacles.
Able to drink alone from a baby cup.
Able to eat finger foods without help.
The baby can communicate needs through words and gestures 16-18 Months The baby's running and climbing skills continue to improve.
A few teeth have grown. A good time to start brushing teeth.
Seperation anxiety and stranger danger lessen more.
The baby starts talking clearly. Forming small sentences.
The baby starts potty training 101.
The baby is able to sribble and doodle with crayons. 2-4 years old The toddler continues growing.
Language and motor skills develop greatly.
Able to hold a pencil.
Throw and catch a ball.
Start speaking well, and expanding vocabulary day by day. This is why its important to watch your language among children. They will instantly pick up that word and then use it. I was born on November 4, 1994 My dad holding me. I'm probably at 4 weeks My grandma feeding my at 5-6 weeks About 5 months 8 months old Me on my micky mouse carpet! I dont look to happy in the snow.
15 months. Getting a hair cut at 18 months 3! I was a bulls fan since 2 Alpine Fest. 2 years old 5-7 years old By five, the child should have 20/20 vision.
Increased growth and gain in muscle mass.
Understands concept of time.
Should know right from left.
Vocabulary of 10,000-14,000 words.
-Mine might have been larger at the time since i know both English and Polish.
Easily frustrated by failure.
Loves telling jokes and riddles.
Asks many questions like "Why?....How come?....What if?"
Children learn at a rapid rate. I'm 6. Sitting with my Mom 5yrs old in top 2 pictures 8-10 Years Old 8-10 year olds have difficulty focusing.
Lots of energy.
Still growing upward.
Brain making many connections and learning every day. 8 years old. What a player at 10 years old! Riding giant ant. 8yrs old at Disney World 11-13 Years Old Transitioning to Middle School.
Some kids start thinking about future jobs. (i've always wanted to either be a police man or a doctor. Now im leaning towards doctor).
Body continues growing.
Brain (pituitary gland) starts producing different hormones.
Puberty begins at around 13. 11 on a cruise ship I'm eleven with Daffy and Daisy Duck. 14-My Current Age (16!) Around 14 puberty went into full swing.
Facial and more body hair starts growing,
Bones become denser and muscles continue increasing in size.
Transition to High School may increase stress levels.
Vocabulary continues expanding.
Brain continues learning new things every day. "Love you Mama!" I'm 15 in mexico. That hunk is me about a year ago. Me and my girlfriend before Homecoming Zip lining (I'm 15) (16) Future Age 20 Get into a good college. My dream college would be Harvard Med. I would also love to go to the University of Chicago or Northwestern University.
I plan on going into the Medical field and become a doctor or researcher.
On top of all that I plan on getting an apartment. Age 30 I plan on getting married.
I plan on buying a house.
Have 3 kids in my 30s.
Also get a job i enjoy doing in the medical field. Such as a Doctor. Age 40 Raise a family.
Possibly buy a new house.
Hopfuly become a millionare by age 40.
If that happens i will then travel the world for a few years. Age 50 Have mid-life crisis.
Buy a harley davidson.
Grow beard. (Maybe moustache too). Age 60 When my kids have kids of their own i plan on being an awesome grandpa.
Go on vacation to some exotic location.
Buy a boat if I do not already have one and go sailing. Age 70 Retire.
In old age the urge for sex decreases and so does the ability to preform. In other words stock up on viagra.
My eyesight will go back. I will need to get glasses. I might possibly develop cataract or glaucoma.
My skeleton will become old and frail. It will be made up of smaller or porous bones.
I might get osteoarthritis.
Old age does not sound good at all :(
Before i hit old age I plan to live life to the fullest. Approximate timetable of prenatal development. (2010). Retrieved from http://www.childdevelopmentinfo.com/development/prenataldevelopment.shtml During your pregnancy. (2008). Retrieved from http://www.babies.sutterhealth.org/during/ Fetal development. (2011). Retrieved from http://www.octopusmom.com/Fetal_Development.html McMullen, T. M. (2010). Human development. Informally published manuscript, Deparment of Psychology, Montana State University Billings, Billings, Montana. Retrieved from http://www.msubillings.edu/CASFaculty/McMullen/GeneralPsychology_files/development.pdf Prenatal image gallery index. (2011). Retrieved from http://www.ehd.org/prenatal-images-index.php Pregnancy guide. (2011). Retrieved from http://similac.com/pregnancy/ Stöppler, M.C. (2011, May 25). Puberty. Retrieved from http://www.medicinenet.com/puberty/article.htm Vorvick, L. U.S. National Library of Medicine, American Accreditation HealthCare Commission. (2010). Anatomy Retrieved from http://www.nlm.nih.gov/medlineplus/ency/imagepages/17010.htm Works Cited