Skip Navigation
Improving lifelong health one pregnancy at a time.
English
Español
Português
Educator Login / Register
Donate Now
Get Free Videos
Your Life Before Birth Video
Free Mobile Apps
Get Free EHD Videos
When Health Begins
The Virtual Human Embryo
Prenatal Development DVD
Image Gallery
Movie Theater
DVD Documentation Center
Multilingual Illustrated DVD
Introduction
0 - 4 Weeks
4 - 6 Weeks
6 - 8 Weeks
8 Weeks
8 - 12 Weeks
3 - 4 Months
4 - 6 Months
6 Months - Birth
Educator's Corner
Classic Works
Prenatal Summary
Prenatal Timeline
Prenatal Overview
EHD Store
About EHD
Support EHD
Sections
Home
›
Multilingual Illustrated DVD
Multilingual Illustrated DVD
[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
生前発育の生物学
.
日本語
[Japanese]
This program is distributed in the U.S. and Canada by National Geographic and EHD.
[
learn more
]
[
hide
]
To purchase online:
visit
EHD's Online Store
To purchase online:
visit
EHD's Online Store
Choose Language:
88 languages available
Afrikaans
Albanian (Tosk) [Shqip]
Arabic [عربي]
Armenian [Հայերեն]
Assamese [অস]
Azerbaijani North [Azərbaycan Dilində]
Belarusian [Беларуская мова]
Bengali [বাং]
Bosnian [Bosanski]
Bulgarian [Български]
Catalan [Català]
Creole (Haitian) [Kreyòl Ayisyen]
Croatian [Hrvatski]
Czech [Česky]
Danish [Dansk]
Dutch [Nederlands]
English
Estonian [Eesti]
Finnish [Suomi]
French [Français]
Ganda [Luganda]
Georgian [საქართველო]
German [Deutsch]
Greek [Ελληνικά]
Gujarati [ગુજરા]
Hausa
Hebrew [עברית]
Hindi [हिन्दी]
Hungarian [magyar]
Igbo
Indonesian [BAHASA INDONESIA]
Italian [Italiano]
Japanese [日本語]
Javanese [Basa Jawa]
Kannada [ಕನ್ನಡ]
Kashmiri [کشمیری]
Kazakh [Қазақ]
Kinyarwanda
Kirundi (Rundi) [Kirundi]
Korean [한국어]
Krio
Kurmanji [Kurmancî]
Kyrgyz [Кыргыз]
Latvian [Latviski]
Lithuanian [Lietuvių kalba]
Macedonian [Македонски]
Malagasy
Malay [Bahasa Melayu]
Malayalam [മലയാളം]
Mandarin (Simplified) [中文(简体)]
Mandarin (Traditional) [中文 (繁體)]
Marathi [मराठ]
Mongolian (Khalkha) [Монгол]
Nepali [नेप]
Norwegian [Norsk]
Pashtu (Pushto) [پښتو]
Persian [فارسی]
Polish [Polski]
Portuguese [Português]
Punjabi, Eastern [ਪੰਜਾਬੀ]
Punjabi, Western [پاکستانی پنجابی]
Romanian [Română]
Russian [Русский]
Serbian [СРПСКИ]
Shona
Sindebele (Ndebele) [Ndebele]
Sindhi [سندھی]
Slovak [Slovenčina]
Slovenian [Slovenščina]
Somali
Sorani [كوردی]
Spanish [Español]
Swahili
Swati (siSwati) [Siswati]
Swedish [Svenska]
Tagalog
Tajik [Тожик]
Tamil [தமி]
Telugu [తెల]
Thai [ไทย]
Turkish [Türkçe]
Turkmen [Türkmençe]
Ukrainian [Українська]
Urdu [اردو]
Uzbek [Ўзбек]
Vietnamese [tiếng Việt]
Yoruba
Zulu [isiZulu]
Download English PDF
Download Spanish PDF
Download French PDF
What is PDF?
Hide Table of Contents
Show Table of Contents
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)
The Fetal Period
(8 Weeks through Birth)
Chapter 37
9 Weeks: Swallows, Sighs, and Stretches
See Snapshots
胎児期は 出生まで続きます
See Snapshots
9 週までには 指しゃぶりが始まり 胎児は 羊水を嚥下できます
See Snapshots
胎児は 物をつかんだり 頭を前後に動かし 顎を開いたり閉じたり 舌を動かし ため息をついたり 伸びをすることができます
顔や手のひら 足裏にある神経受容体は 軽い接触を感じることができます
「足裏への軽い接触に反応して」 胎児は 股間部節と膝を曲げ また 足指を丸めたりもします
See Snapshots
この頃には 瞼は かたく閉じられています
See Snapshots
声帯発達の始まりの兆候として 喉頭に声帯靱帯が現れます
See Snapshots
女の胎児では 子宮が 識別できるようになり 卵原細胞と呼ばれる 未成熟の生殖細胞が 卵巣内で複製されています
外性器においては 男女の区別ができる ようになります
Chapter 38
10 Weeks: Rolls Eyes and Yawns, Fingernails & Fingerprints
See Snapshots
9 ~ 10 週にかけての 急激な成長により 体重が75% 増加します
See Snapshots
10 週までには 上瞼を刺激することにより 眼球を下方に向けます
胎児は 頻繁にあくびをし 口を開けたり閉じたりします
See Snapshots
殆どの胎児は 右指をしゃぶっています
臍帯内の腸の部分は 腹腔内に戻ります
See Snapshots
骨の殆どの部分において 骨化が進んでいます
See Snapshots
手足の爪が発達します
See Snapshots
受精後10 週で 唯一無比の指紋が現れます 指紋は 人の一生を通じて 認証のため使われます
Chapter 39
11 Weeks: Absorbs Glucose and Water
See Snapshots
11 週までには 鼻と唇が 完全に出来上がります その他の身体部分に関しては ヒトのライフサイクルの 各段階によって その外観が変わってきます
See Snapshots
腸は 胎児の飲み込んだ グルコースと水を 吸収し始めます
See Snapshots
受精時において 性別は決定されていますが 外性器の男女の区別が 出来るようになるのは この頃です
Introduction
0 - 4 Weeks
4 - 6 Weeks
6 - 8 Weeks
8 Weeks
8 - 12 Weeks
3 - 4 Months
4 - 6 Months
6 Months - Birth