Human Development During Pregnancy
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Transcript of Human Development During Pregnancy
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Human Development During Pregnancy
By Mrs. Fucoloro’s 7th Grade Science Class
St. Clement SchoolSt. Louis, MO2005-2006
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The First Trimester of Pregnancy
By: Beth, Olivia, Jen, Abby, Catherine,
Kate, Sarah, Kate, Tim, Olivia, Ali,
Taylor, Mary, and Allie
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Features
Week 4: The placenta develops
Week 6: Umbilical cord develops, first heart beat begins, buds for arms and legs form
Week 8: elbows and feet begin to grow, teeth develop under gums
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Week 9: Bones and cartilage begin to develop, the fingers are short and webbed
Week 10: It’s moving!!! Most joints have been formed
Week 11: Now considered a fetus, blood begins to circulate between the baby and the uterus, placenta starts to function
Week 12: Fingers and toes separate, hair and nails begin to grow, genitals take on gender characteristics
Features, continued
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Organs
• Most of the organs like kidneys, liver, pancreas, bladder, intestines, bronchi, and skin have formed by the end of the first trimester
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How Long?
• Week 7: baby is 1/3 of an inch long or the size of a grain of rice
• Week 12: baby is 2 inches long
• At the end of the first trimester the baby will weigh approximately half of a pound
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Senses
• All sense organ have begun to form, but it will be many weeks before they are completed to the point where the baby will be able to use them
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Extra Info• Week 5: embryo has three layers: the
ectoderm, endoderm, and the mesoderm and the skin remains transparent
• Week 11: blood will begin to circulate in between the baby and the uterus
• Week 12: kidneys begin to form and excrete urine and the muscles in the intestinal wall practice digesting food
• During the first trimester the brain and head grow rapidly. “Ridges demarcate the three sections of the brain.” –www. Visibleembryo.com
• Week 6: baby’s first heart beat is recorded
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TIMELINE
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Works Cited
• “pregnancy week-by-week guide.” 98-06. StorkNet family. 3 April 2006. http://www.pregnancyguideonline.com
• “The visible embryo” not given. National Institute of Health. 3 April 2006 http://www.visembryo.com/baby/index.html
• “Fetal Development:How your baby grows.” babycenter.com 2006.Baby Center LLC.30 March 2006.http://www.babycenter.com/fetaldevelopment/
• “First Trimester”. Pregnancy week by-week guide. Doerr Consulting/Stork Net Family. 30 March 2006.http://www.pregnancyguideonline.com/
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Sean, Drew, Nick, Eric, Brian, Patrick, Mary, Molly, William, Brendan, Rebecca, Claire and Colleen
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Features• The following begin to
develop: head-face, eyes, retina, eyelids and eyebrows, ears, bones in the middle ear, nostrils
• vocal cords, intestines, pancreases, arms, hands, fingernails, hair, legs, toenails, fat, placenta, brain, muscles.
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Organs
• Week 17: Heart may be pumping up to 25 quarts of blood each day
• Week 18: Prostate glands grow in boys.
• Week 20: Uterus starts to develop in baby girls
• Week 21: Heart strengthens
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Weight and Inches
• 4 months: the baby’s length is 4.5 inches
• 5 months: the baby’s length is 10 inches.
• 6 months: the baby’s length is 12 inches and weighs more than a 1 pound
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Developed Senses
• Eyes and ears develop and move to their proper position throughout the trimester
• Week 26: brain waves for sight and sound
• Week 27: eyes start opening and retinas start growing
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Extra Info!• Baby’s bones begin to
harden• Baby is moving a lot but
the mother cannot always feel these movements
• The baby’s head is half the size of the body
• Fine hair is all over the baby’s body
• Baby’s eyes are large and opened
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TIMELINE
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Work citedWeb“Pregnancy week-by-week.” Doree Consulting
Baby Center 4/3/2006, unknown http://www.pregnancyguideonline.com/
Author unknown Visual Embryo “Visual Embryo Timeline”4/3/2006 unknown http://www.visembryo.com/baby/index.html
Baby center LLC. StorkNet “Fetal Development: How Baby Grows.”4/3/2006, unknown http://www.babycenter.com/fetaldevelopment/
Imageshttp://www.pregnancy.org/pregnancy/fetaldevelopment2.phphttp://nycpastor.typepad.com/photos/uncategorized/zaizaismile.jpghttp://pregnancy.about.com/library/ultrasounds/us0016c.jpg
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By: Michael, Justin, Jamey, Alex, Kevin, Tyler, Matthew, Chris, Maggie, David, Mary Margaret, Ellie, Anthony, Katie and Kevin
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Body Features• The eyebrows and
eyelashes finish forming and eyes function
• Hair on head continues to grow
• Leg actually starts to look like a leg, a little bony
• More body fat is collecting around bones
• The arms are small but the bones are growing
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Organs
• During the third trimester of pregnancy almost all organs have formed
• Only the lungs need to be developed more because if the baby was born now it would have a hard time breathing
• By then end of the third trimester the baby is ready to be born because all essential organs are in place
lifedynamics.com
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Length & Weight
• The average weight from weeks 28-40 is 2 to 7.5 lbs.
• The average length from weeks 28-40 is 14.8 to 20 inches
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SENSES
• By week 32, the baby is up to 4 pounds and all five sense are functional
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• In 2005 nearly 500,000 In 2005 nearly 500,000 babies born before the babies born before the 3 trimester did not gain 3 trimester did not gain all their normal all their normal functionsfunctions
• Albert Einstein was Albert Einstein was born in the beginning born in the beginning of the 3 trimesterof the 3 trimester
• 82% of twins weigh less than 6 pounds
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Timeline
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Bibliography• 1. “Baby Center.” 1997-2006. “What your baby
looks like at seven months.” 4/2/06 www.babycenter.com/fedaldevelopment/
• 2. “Visible Embryo.” no copy right date. Visible Embryo. 4/2/06.
www.visembryo.com/baby/index.html• 3.“Storknet’s.” 1998-2006. Pregnancy Week-by-
Week Guide. 4/2/06. www.pregnancyguideonline.com
• 4. “Show Me News.” no copy right date. Extra Information. www.showmenews.com/2005/babylove/2005.