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Multilingual Illustrated DVD [Tutorial]
The Biology of Prenatal Development
Table of Contents
- 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
- 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 continues
|By 9 weeks,
thumb sucking begins
and the fetus can swallow
|The fetus can also grasp
move the head forward
open and close the jaw, move
the tongue, sigh, and stretch.
Nerve receptors in the face, the palms of the hands, and the soles of the feet can sense light touch.
"In response to a light touch on the sole of the foot," the fetus will bend the hip and knee and may curl the toes.
|The eyelids are now
|In the larynx, the appearance
of vocal ligaments
signals the onset
of vocal cord development.
|In female fetuses,
the uterus is identifiable
and immature reproductive cells,
are replicating within
External genitalia begin to distinguish themselves as either male or female.
|A burst of growth
between 9 and 10 weeks
increases body weight
by over 75%.
|By 10 weeks, stimulation
of the upper eyelid
causes a downward
rolling of the eye.
The fetus yawns and often opens and closes the mouth.
|Most fetuses suck
the right thumb.
Sections of intestine within the umbilical cord are returning to the abdominal cavity.
|Ossification is underway
in most bones.
|Fingernails and toenails
begin to develop.
|Unique fingerprints appear 10 weeks after fertilization. These patterns can be used for identification throughout life.|
|By 11 weeks
the nose and lips
are completely formed.
As with every other body part,
will change at each stage
of the human life cycle.
|The intestine starts
to absorb glucose and water
swallowed by the fetus.
|Though sex is determined at fertilization, external genitalia can now be distinguished as male or female.|