o
The Visible Embryo Home
   
Google  
Fetal Timeline--- Maternal TimelineNews-    Prescription Drugs in Pregnancy--  --Pregnancy Calculator-- - Female Reproductive System--& Bibliography---
Pregnancy Timeline by SemestersDevelopmental TimelineFertilizationFirst TrimesterSecond TrimesterThird TrimesterFirst Thin Layer of Skin AppearsEnd of Embryonic PeriodEnd of Embryonic PeriodFemale Reproductive SystemBeginning Cerebral HemispheresA Four Chambered HeartFirst Detectable Brain WavesThe Appearance of SomitesBasic Brain Structure in PlaceHeartbeat can be detectedHeartbeat can be detectedFinger and toe prints appearFinger and toe prints appearFetal sexual organs visibleBrown fat surrounds lymphatic systemBone marrow starts making blood cellsBone marrow starts making blood cellsInner Ear Bones HardenSensory brain waves begin to activateSensory brain waves begin to activateLungs begin to produce surfactantBrain convolutions beginPeriod of rapid brain growthImmune system beginningImmune system beginningWhite fat begins to be madeWhite fat begins to be madeFull TermBrain convolutions beginHead may position into pelvisFetal liver is producing blood cells
Roll over chart for details of  fetal  development

News Alerts   Birth Spiral  Fertilization Discovery May Lead to Male Contraceptive  Birth Spiral  Placentas Can Adapt To Poor Diets/Low Oxygen  Birth Spiral  How Stem Cells Lose Their Unlimited Potential  Birth Spiral  Circadian Rhythm Controls Sleep & Body Temperature  Birth Spiral  Polluted Air Decreases Prenatal Brain Size  Birth Spiral  Brains of Girls and Boys Have Equal Math Ability  Birth Spiral  Using 'Pot' In Early Pregnancy Disrupts Brain Growth  Birth Spiral  Health in Old Age A Lifelong Affair  Birth Spiral  Unblocking Stem Cell Division In Old Brains  Birth Spiral  Reversing Aging In The Brains of Rats  Birth Spiral  Obesity Risks Different For Men and Women  Birth Spiral  MYH9 Gene Mutations Cause Numerous Disorders  Birth Spiral  'Sleeping Cells' Can Be Harmful  Birth Spiral  Waves of Signals Determine A Cell's Fate  Birth Spiral  Identifying Gene Mutations In Intellectual Disability  Birth Spiral  Infertility More Common Than Imagined?  Birth Spiral  Competition Between Cells Exerts Change  Birth Spiral  Zika's Effects Vary Depending on Mom's Antibodies  Birth Spiral  ANT Protein Mutations Fail to Supress Mitochondria  Birth Spiral  A Target For ALS  Birth Spiral  Fatty Tissue In Lungs Causes Asthma  Birth Spiral  The Story of Thalidomide Continues  Birth Spiral  New Way to Study Early Development & Pregnancy  Birth Spiral  Moms Impact Children's Oxytocin Levels  Birth Spiral  Fewer Baby Boys for Stressed Moms  Birth Spiral  Jumping Genes Can Cause Rare Child Disorders  Birth Spiral  Gene Link For Sudden Infant Death Syndrome  Birth Spiral  Reversing Symptoms of Schizophrenia  Birth Spiral  Parents' Lies Hurt Their Children  Birth Spiral  How Fast Can Nerves Grow?  Birth Spiral  Target For Healing Old Muscles?  Birth Spiral  Do Aggressive Breast Cancers Store Their Own Energy?  Birth Spiral  Why E-cigarette Atomizers Kill  Birth Spiral  How Folk Medicines Affect Hypertension  Birth Spiral  Our Muscles Reveal An Ancient Past  Birth Spiral  Do You Hear What I Hear?  October 2019   Birth Spiral  Alzheimer's Disease Responds to Choline  Birth Spiral  Does Time Modify the Affect of Proteins?  Birth Spiral  The mesoSPIM Initiative  Birth Spiral  Microtubules Branch To Spur Mitotis  Birth Spiral  Which Proteins Call The Shots  Birth Spiral  DNA Does Not Like Water!  Birth Spiral  The Switch' from Juvenile to Adult  Birth Spiral  The Origin of Huntington's Disease?  Birth Spiral  Undercover Evolution  Birth Spiral  The Beautiful Simplicity of Tissue Formation  Birth Spiral  High Stress Decreases Mother/Child Attachment  Birth Spiral  Why Half of All Neurons Die  Birth Spiral  Mouse Brain Has Billions of Synaptic Connections  Birth Spiral  Diabetes Drug Slows Glioma Brain Cancer  Birth Spiral  Why Fruit Flies Can Eat Almost Anything  Birth Spiral  GABA Influences Circadian Clock Signals  Birth Spiral  It's Never Too Late to Exercise  Birth Spiral  Even Moderate Drinking Alters Newborn Genes  Birth Spiral  Overeating Linked to Fast Aging  Birth Spiral  Tatooing Can Create Allergic Reactions  Birth Spiral  Controlling RNA With Light!  September 2019   Birth Spiral  How Limbs Form  Birth Spiral  How Mother & Fetal Cells Communicate  Birth Spiral  Gene Changes in Sperm After Pot Use  Birth Spiral  A New Technology for Gene Editing  Birth Spiral  Unique Treatment For DPIG Glioma  Birth Spiral  Self-Testing For A Fatal Disease  Birth Spiral  Testosterone Complicates Relationships  Birth Spiral  Molecule Identified As Key to Anxiety  Birth Spiral  The Fireworks of life  Birth Spiral  From Chaos Comes Order  Birth Spiral  Mediterranean Diet Improves Pregnancy Health  Birth Spiral  Premature Baby and Maternal Complications  Birth Spiral  Worry Over Increased Medical Scans in Pregnancy  Birth Spiral  Birthing Moms Have More Transfusion Complications  Birth Spiral  Placenta Accreta  Birth Spiral  Female 'Stress' Links to Alzheimer's  Birth Spiral  Cibio Knocks Out Cystic Fibrosis  Birth Spiral  Preventing Protein Aggregates in The Brain  Birth Spiral  Linking Epilepsy to Genes  Birth Spiral  Predicting Heart Health In Infants  Birth Spiral  'Maternal Instinct' Is Real  Birth Spiral  Pregnant Mothers Can Mitigate Impact of Marijuana  August 2019   Birth Spiral  PFAS, the 'Forever Chemicals'  Birth Spiral  A Source of Infertiity?  Birth Spiral  Identified - A Gene Mutation For Autism  Birth Spiral  Super-charged Treatment for Leukemia  Birth Spiral  Daily Cannabis Use Before and During Pregnancy?  Birth Spiral  Women's Rights Benefit Entire Community  Birth Spiral  Would You Choose to Live Longer or Live Healthier?  Birth Spiral  Regulating Blood Vessel Formation  Birth Spiral  What Makes Heart Muscles Contract?  Birth Spiral  Cancers May Originate From Ancient Genes  Birth Spiral  What Ancient Hominids Tell Us  Birth Spiral  Killing HIV  Birth Spiral  How Schwann Cells Repair Axons  Birth Spiral  Reversing Diabetes  Birth Spiral  Schwann Cells Generate Myelin  Birth Spiral  A 3D Model of Early Embryo  Birth Spiral  Frankenbodies  Birth Spiral  Human Immune T Cells Vanquish Brain Tumor  Birth Spiral  6 Mammal Gene Networks Profiled  Birth Spiral  'Painting' Human Stem Cells  Birth Spiral  How Sickle Cells Form  Birth Spiral  3D Vision Brain Cells  Birth Spiral  Artificial Sweeteners On Trial Again  July 2019   Birth Spiral  Forming the Brain  Birth Spiral  How Oxygen Shapes Arms and Legs  Birth Spiral  KLF4 Role In Deciding Cell Fate  Birth Spiral  Size Matters!  Birth Spiral  Landmark Finding Stem Cells Change Fast!!  Birth Spiral  How Cells Defend Against Genetic Error  Birth Spiral  Pressure Helps Stem Cells Heal Bone Breaks  Birth Spiral  Cell Identity  Birth Spiral  Reaching and Grasping - Tunes Our Brain  Birth Spiral  Learned Behaviors Can Be Inherited  Birth Spiral  Ahhh Menopause!  Birth Spiral  Pregnancy Compensation Hypothesis  Birth Spiral  Food for Thought  Birth Spiral  Human Brains Tuned for Musical Pitch  Birth Spiral  Music Builds Brains In Preemies  Birth Spiral  Celiac Disease In Children  Birth Spiral  Recent CRISPR Births At Risk  Birth Spiral  Fetal Cilia & Adult Heart Valves  Birth Spiral  Controlling Cell Identity  Birth Spiral  Weak Current Can Retrieve Lost Memories  June 2019   Birth Spiral  Mitochondria Influenced By Cell Nucleus  Birth Spiral  What Signals Muscle Cell Differentiation?  Birth Spiral  A Down Syndrome Treatment?  Birth Spiral  A Circuit Board In Each Cell?  Birth Spiral  Did Leonardo da Vinci have ADHD?  Birth Spiral  What Controls Cell Size?  Birth Spiral  Pigment Stem Cells Can Regenerate  Birth Spiral  A Protein That Adjusts Skin Color  Birth Spiral  Asymmetry Cues Cell Function Via Structure  Birth Spiral  All Immature Cells Can Become Stem Cells  Birth Spiral  How Thalidomide Can Affect Brain Size  Birth Spiral  How Stem Cells Self Protect From Viruses  Birth Spiral  Chronic Stress Stimulates Appetite  Birth Spiral  Discovering Achilles' Heel of Glioblastoma  Birth Spiral  World's 2nd Most Common Birth Defect  Birth Spiral  Deciphering the Cerebral Cortex  Birth Spiral  The Hansel and Gretel of Neuron Connection  Birth Spiral  To Become, Or Just To Be - That is the question  Birth Spiral  Diagnosing Rare Genetic Disease Fast!  Birth Spiral  Bravery Cells Found In Hippocampus  Birth Spiral  Gene Removal Prevents Pancreatic Cancer  Birth Spiral  3D Model of Nutrient Exchange in Human Placenta  Birth Spiral  Pregnancy Pushes Mom's Clock Forward  May 2019   Birth Spiral  Lipids Increase Brain Volume In Tiny Preemies  Birth Spiral  No Safe Amount of Alcohol During Pregnancy  Birth Spiral  Direction of Nerve Fibers Dictates Head to Toe Axis  Birth Spiral  Hair Follicle Stem Cells Repair Damaged Neurons   Birth Spiral  Taming 'Jumping' Genes  Birth Spiral  3 Prenatal CRISPR Gene Editing Studies  Birth Spiral  Gene Therapy Corrects X-SCID  Birth Spiral  A 'Single Cell' Atlas For Children's Health  Birth Spiral  Star Wars 'Burst' of Activity Before Cell Death  Birth Spiral  Eliminating Damaged Mitochondria  Birth Spiral  Eliminating Damaged Mitochondria  Birth Spiral  Ultrasound Aligns Living Cells  Birth Spiral  Anesthesia Sends Fetal Neurons Down Wrong Path  Birth Spiral  Two Enzymes May Trigger Muscle & Brain Disorders  Birth Spiral  Marijuana For Morning Sickness Bad For Baby  Birth Spiral  Unjamming DNA Log Jams  Birth Spiral  Digging Up Ancient Gene Signals In Modern Humans  Birth Spiral  Skin Responds to Sunlight On a 48 Hour Cycle  Birth Spiral  Sunscreen Can Reduce Melanoma By 40%  Birth Spiral  Neural Stem Cells Continuously Generate  Birth Spiral  Assisting Preemies With Vision Problems  Birth Spiral  Linking Nicotine to Sudden Infant Death  Apr 2019   Birth Spiral  How Blood and Immune Cells Form  Birth Spiral  Squishing Blood Stem Cells  Birth Spiral  Roots of Infertility's In Some Sperm DNA  Birth Spiral  Secret to Human Sperm's Swimming Prowess  Birth Spiral  Precision Medicine for Pediatric Cancer  Birth Spiral  Understanding Influence of R-Loops  Birth Spiral  The Genetics of Regeneration  Birth Spiral  Increasingly Complex Mini Brains  Birth Spiral  Steps Closer to Curing Spina Bifida  Birth Spiral  Fetal Brain Problems Caused by Flu Preventable  Birth Spiral  How Cytochrome C Triggers Cell Death  Birth Spiral  Embryos 'Go With The Flow'  Birth Spiral  Mapping A Baby's First Week  Birth Spiral  Measuring Mother's Blood for Smoking  Birth Spiral  PFCs in Food & Water Slow Fetal Growth  Birth Spiral  How Axons Enter the Spinal Cord  Birth Spiral  Protein Stimulates Stem Cell Growth?  Birth Spiral  Immune Cells Help Form Heart Valves  Birth Spiral  Why Male/Female Brains Differ  Birth Spiral  Machine Learning & Diagnosis  Mar 2019   Birth Spiral  What Controls Telomeres On Our Chromosomes?  Birth Spiral  Mitochondrial Fusion  Birth Spiral  Therapy For Mitochondrial Disease?  Birth Spiral  Our Genes Vary Our Physical Outcomes  Birth Spiral  How Exercise/Fasting Keep Us Healthy  Birth Spiral  NEW - Double Walled Nucleus?   Birth Spiral  Nested CRISPR: Using Clone-Free DNA Pieces  Birth Spiral  CRISPR Makes Stem Cells 'Invisible'  Birth Spiral  New anti-CRISPR Proteins Found  Birth Spiral  Miniature Kidney Organoids Come of Age  Birth Spiral  Therapy for Muscular Dystrophies  Birth Spiral  SMLC and Embryos  Birth Spiral  Disrupting Embryo Implantation  Birth Spiral  Gastrulation In Artificial Embryos  Birth Spiral  Regrowing Damaged Kidneys  Birth Spiral  What Makes Maleness?  Birth Spiral  Getting Cells Going  Birth Spiral  How a neuron grows an axon  Birth Spiral  Cells Mathematically Determine Position  Birth Spiral  Heavy Drinking Changes DNA  Birth Spiral  Artificial Intelligence and the Single Cell  Feb 2019   Birth Spiral  Kick-Starting Cell Division  Birth Spiral Can Adult Brains Create New Neurons?  Birth Spiral Can Adult Brains Create New Neurons?  Birth Spiral A First! CRISPR/Cas9 Edit of Gene Inheritance  Birth Spiral All too human  Birth Spiral CNVs Link to Schizophrenia  Birth Spiral The Long and the Short of It  Birth Spiral The Body's Weight Center Is In The Brain  Birth Spiral Why Do HeLa Cells Persist?  Birth Spiral How Cells Fight Chromosome Imbalance  Birth Spiral  Changing How We Study Disease?  Birth Spiral How Cell Membrane Receptors Are Activated  Birth Spiral Caught At Work  Birth Spiral Linking Aging and RNA-binding Proteins  Birth Spiral Two Proteins Create Brain Boundaries  Birth Spiral  Some Tension is Good in Life  Birth Spiral  Gut Link to Brain Disorders in Pregnancy  Birth Spiral  True age detected in DNA from blood  Birth Spiral  How sperm stem cells maintain high numbers  Birth Spiral  What Causes Organs to Deteriorate and Age?  Birth Spiral  What a mother gives to her baby besides genes  Birth Spiral  We Are What We Eat  Birth Spiral  How Exercise Reduces Belly Fat  Birth Spiral  Gender Affects Sense of Smell  Birth Spiral  Cannabis Alters Genes in Sperm  Birth Spiral  A New Way to Use CRISPR  Birth Spiral  The Role of microRNAs in Social Behavior  Birth Spiral  Parent Brain Activity Mimics Infant Brain Activity  Birth Spiral  Roots of Neuropsychiatric Disease  Birth Spiral  Vitamin D Deficiency Increases Risk of Schizophrenia  Birth Spiral  Good Infant Nutrition Can Protect Against Stress  Birth Spiral  Glutamate Stimulates Nerve Growth  Birth Spiral  Why Newborns Root  Birth Spiral  A Gene That Helps Define Us As Humans  Birth Spiral  Rare Gene Mutation Affects Brain and Memory  Birth Spiral  Alleviating Schizophrenia In Mice  Birth Spiral  The Brain Uses Two Clocks  Birth Spiral  Brain Grey Matter Grows Rapidly In First Years  Jan 2019