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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
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[Japanese]
This program is distributed in the U.S. and Canada by National Geographic and EHD.
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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)
Embryonic Development: 4 to 6 Weeks
Chapter 11
4 Weeks: Amniotic Fluid
See Snapshots
4 週までには 無色の羊膜が 液体に満たされた嚢にある 胎芽を取り囲みます この無菌の液体は 羊水と呼ばれ 胎芽を損傷から守ります
Chapter 12
The Heart in Action
See Snapshots
通常1 分間に113 回の 心拍数があります
血液が心室に出入りすると 心臓の色が変化することに 気づきましたか
心臓は 出生前に およそ5,400 万回も脈打ち 約80 年という一生を通じて 32 億回もの心拍数があります
Chapter 13
Brain Growth
急速な脳の発達は 前脳 中脳 後脳の変化により分かります
Chapter 14
Limb Buds
See Snapshots
4 週までには 肢芽の出現とともに 上肢と下肢の発育が始まります
See Snapshots
この時点の皮膚は 細胞1個の厚みしかなく 透明色をしています
皮膚が厚みを増すにつれて 透明感は失われます ですから 器官の発達を 観察できるのも あと1 ヶ月のみとなります
Chapter 15
5 Weeks: Cerebral Hemispheres
See Snapshots
4 ~ 5 週の間に 脳は急速な成長を続け 5 つのはっきりと識別できる 部分に分かれます
頭は 胎芽全体の大きさの 約 1/3を占めます
大脳半球が現れ 次第に 脳の大半を 占めるようになります
大脳半球が制御する ことになる機能は 思考 学習 記憶 言語 視力 聴覚 随意運動 および問題解決などです
Chapter 16
Major Airways
See Snapshots
呼吸器官では 左右の主気管支幹が見られ 最終的には 気管が 肺につながります
Chapter 17
Liver and Kidneys
See Snapshots
脈打つ心臓の横にある腹部を 大きな塊の肝臓が占めている ことに注意してください
永久腎臓は5 週までに現れます
Chapter 18
Yolk Sac and Germ Cells
See Snapshots
卵黄嚢は 胎芽細胞と呼ばれる 初期の生殖細胞を含んでいます 5 週までに これらの胎芽細胞は 腎臓の横にある 生殖器官に移動します
Chapter 19
Hand Plates and Cartilage
See Snapshots
5 週までに 胎芽では 手板が発達し 軟骨の形成は5 週半 までに始まります
ここでは 5 週 6 日目に 左の手板と手首が見られます
Introduction
0 - 4 Weeks
4 - 6 Weeks
6 - 8 Weeks
8 Weeks
8 - 12 Weeks
3 - 4 Months
4 - 6 Months
6 Months - Birth
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