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When Health Begins
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Prenatal Development DVD
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[Tutorial]
The Biology of Prenatal Development
Introduction
0 - 4 Weeks
4 - 6 Weeks
6 - 8 Weeks
8 Weeks
8 - 12 Weeks
3 - 4 Months
4 - 6 Months
6 Months - Birth
প্রাকজন্ম বিকাশৰ জীবন-বিজ্ঞান
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Table of Contents
Chapter 1 – Introduction
Chapter 2 – Terminology
THE EMBRYONIC PERIOD (THE FIRST 8 WEEKS)
EMBRYONIC DEVELOPMENT: THE FIRST 4 WEEKS
Chapter 3 – Fertilization
Chapter 4 – DNA, Cell Division, and Early Pregnancy Factor (EPF)
Chapter 5 – Early Stages (Morula and Blastocyst) and Stem Cells
Chapter 6 – 1 to 1 1/2 Weeks: Implantation and Human Chorionic Gonadotropin (hCG)
Chapter 7 – The Placenta and Umbilical Cord
Chapter 8 – Nutrition and Protection
Chapter 9 – 2 to 4 Weeks: Germ Layers and Organ Formation
Chapter 10 – 3 to 4 Weeks: The Folding of the Embryo
EMBRYONIC DEVELOPMENT: 4 TO 6 WEEKS
Chapter 11 – 4 Weeks: Amniotic Fluid
Chapter 12 – The Heart in Action
Chapter 13 – Brain Growth
Chapter 14 – Limb Buds and Skin
Chapter 15 – 5 Weeks: Cerebral Hemispheres
Chapter 16 – Major Airways
Chapter 17 – Liver and Kidneys
Chapter 18 – Yolk Sac and Germ Cells
Chapter 19 – Hand Plates and Cartilage
EMBRYONIC DEVELOPMENT: 6 TO 8 WEEKS
Chapter 20 – 6 Weeks: Motion and Sensation
Chapter 21 – The External Ear and Blood Cell Formation
Chapter 22 – The Diaphragm and Intestines
Chapter 23 – Hand Plates and Brainwaves
Chapter 24 – Nipple Formation
Chapter 25 – Limb Development
Chapter 26 – 7 Weeks: Hiccups and Startle Response
Chapter 27 – The Maturing Heart
Chapter 28 – Ovaries and Eyes
Chapter 29 – Fingers and Toes
THE 8-WEEK EMBRYO
Chapter 30 – 8 Weeks: Brain Development
Chapter 31 – Right- and Left-Handedness
Chapter 32 – Rolling Over
Chapter 33 – Eyelid Fusion
Chapter 34 – "Breathing" Motion and Urination
Chapter 35 – The Limbs and Skin
Chapter 36 – Summary of the First 8 Weeks
THE FETAL PERIOD (8 WEEKS THROUGH BIRTH)
Chapter 37 – 9 Weeks: Swallows, Sighs, and Stretches
Chapter 38 – 10 Weeks: Rolls Eyes and Yawns, Fingernails & Fingerprints
Chapter 39 – 11 Weeks: Absorbs Glucose and Water
Chapter 40 – 3 to 4 Months (12 to 16 Weeks): Taste Buds, Jaw Motion, Rooting Reflex, Quickening
Chapter 41 – 4 to 5 Months (16 to 20 Weeks): Stress Response, Vernix Caseosa, Circadian Rhythms
Chapter 42 – 5 to 6 Months (20 to 24 Weeks): Responds to Sound; Hair and Skin; Age of Viability
Chapter 43 – 6 to 7 Months (24 to 28 Weeks): Blink-Startle; Pupils Respond to Light; Smell and Taste
Chapter 44 – 7 to 8 Months (28 to 32 Weeks): Sound Discrimination, Behavioral States
Chapter 45 – 8 to 9 Months (32 to 36 Weeks): Alveoli Formation, Firm Grasp, Taste Preferences
Chapter 46 – 9 Months to Birth (36 Weeks through Birth)
Chapter 1
Introduction
যি সক্রিয় প্রণালীৰ দ্বাৰা এক-কোষী মানব জনন-খোক (জাইগোট) বিকাশ হৈ ১০০-ট্রিলিয়ন সংখ্যাৰ প্রাপ্তবয়স্ক কোষত পৰিণত হয়, বোধহয় ই প্রকৃতিৰ আটাইতকৈ লক্ষ্য কৰিব লগীয়া ঘটনা।
বর্তমান গবেষক সকলে জানে যে প্রাপ্তবয়স্ক শৰীৰে সচাৰচৰ সমাপন কৰা অনেক কার্য্য গর্ভধাৰণৰ সময়ত প্রতিষ্ঠিত হয়- প্রায়ে জন্মৰ বহু দিনৰ আগতেই।
See Snapshots
জন্মৰ আগৰ বিকশিত কাল বেচিকৈ সাজু হোৱাৰ সময় ৰূপে জনা যায় যি কালচোৱাৰ ভিতৰত মানুহে অনেক আবয়ব অর্জন কৰে, আৰু অনেক কৌশল আয়ত্ব কৰে যি জন্মৰ পিচত জীয়াই থাকিবলৈ আৱশ্যক হয়।
Chapter 2
Terminology
গর্ভাৱস্থা সাধাৰণতে ৩৮ সপ্তাহমান থাকে আৰু এই সময় গর্ভসঞ্চাৰ হোৱাৰ পৰা জন্মক্ষণলৈ গণনা কৰা হয়।
See Snapshots
গর্ভধাৰণৰ পিচৰ প্রথম ৮ সপ্তাহত বিকশিত মানবক এক ভ্রূণ বুলি কোৱা হয়, যাৰ অর্থ "অভ্যন্তৰত বিকাশ"। এই সময়চোৱাক, যাক ভ্রূণাৱস্থা বুলি অভিহিত কৰা হয়, শৰীৰ প্রণালীৰ প্রধান অঙ্গসমুহ গঠন হোৱা অৱস্থাৰূপে বর্ণনা কৰা হয়।
See Snapshots
৮-তম সপ্তাহ অন্ত হোৱাৰ পৰা গর্ভাৱস্থা অন্ত হোৱালৈকে "বিকশিত মানবক ভ্রূণ বুলি অভিহিত কৰা হয়", যাৰ অর্থ হৈছে "অজাত সন্তান"। এই সময়চোৱাত, যাক ভ্রূণাৱস্থা বুলি কোৱা হয়, শৰীৰৰ আকাৰ বৃদ্ধি হয় আৰু তাৰ সকলোবোৰ প্রণালীয়ে কাম কৰিবলৈ আৰম্ভ কৰে।
এই প্রক্রিয়াৰসকলো ভ্রূণাৱস্থাৰ কালছোৱাক গর্ভধাৰণৰ সময়ৰ পৰা গণনা কৰা হয়।
Introduction
0 - 4 Weeks
4 - 6 Weeks
6 - 8 Weeks
8 Weeks
8 - 12 Weeks
3 - 4 Months
4 - 6 Months
6 Months - Birth