• Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

Card Range To Study

through

image

Play button

image

Play button

image

Progress

1/14

Click to flip

Use LEFT and RIGHT arrow keys to navigate between flashcards;

Use UP and DOWN arrow keys to flip the card;

H to show hint;

A reads text to speech;

14 Cards in this Set

  • Front
  • Back

Approximate time first division occurs

36 hours after fertilization

Implantation occurs (1/100 in)

6-12 days after fertilization

A bulge develops where the spinal cord will be located

11-13 days after implantation

Blood cells form

17 days after implantation

Heart forms (embryo 2/25 inch long)

18 days

Heart beats

24 days

Basis for nervous system laid (spinal cord, brain, nerves)


Kidneys and reproductive ducts begin to form

18-28 days

Muscles and liver form, lung buds appear (embryo 1/4 inch long)

28 days

Arms and legs sprout; stomach and esophagus form

5th week

Face muscles, teeth, hands, eye pigment

6th week

Gonads develop- sex is determined

7th week

Taste buds develop, fingernails from (embryo 1 1/2 inches long

8th week

Teeth in jaws, bones develop (fetus 2 1/2)

11-12 weeks

Growth

Months 4,5,6