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Grace Reed (Period 4); Fetal Development Timeline

  • Ovulation

    Ovulation
    -Is during menstrual cycle
    egg is released from your ovary.
    -If fertilized, the egg may travel to the uterus and implant to develop into a pregnancy.
  • Month 1 (Beginning of 1st trimester)

    Month 1 (Beginning of 1st trimester)
    -Water-tight sac forms around the fetus, gradually filling with fluid
    -Placenta develops
    -Face is developing
    -Blood cells are taking shape, and circulation will begin.
    -The tiny "heart" tube will beat 65 times a minute by the end of the fourth week.
    -By the end of the first month, the fetus is about 1/4 inch long – smaller than a grain of rice.
  • Month 2

    Month 2
    -Facial features continue to develop
    -Tiny buds that eventually grow into arms and legs are forming.
    -Fingers, toes and eyes are also forming.
    -The neural tube Is well formed by now
    -The digestive tract and sensory organs begin to develop
    -Bone is replacing cartilage
    -Heartbeat can be detected.
    -About 1 inch long and weighs about 1/30 of an ounce.
  • Month 3

    Month 3
    -The arms, hands, fingers, feet and toes are fully formed.
    -Opening and closing its fists and mouth.
    -Fingernails and toenails are now developing.
    -Ears are forming
    -Teeth are forming under gums
    -Fully formed by week 12 (end of month)
    -Extremities are formed and will further develop
    -Fetus is about 4 inches long and weighs about 1 ounce.
    -The possibility of a miscarriage drops.
  • Month 4 (Beginning of 2nd trimester)

    Month 4 (Beginning of 2nd trimester)
    -Heartbeat may now be audible through an instrument called a doppler.
    -Fingers and toes are defined
    -Eyelids, eyebrows, eyelashes, nails and hair are formed.
    -Fetus can suck his or her thumb, yawn, stretch and make faces.
    -Nervous system is starting to function.
    -Reproductive organs and genitalia are now fully developed
    -Fetus is about 6 inches long and weighs about 4 ounces.
  • Month 5

    Month 5
    -Begin to feel the fetus moving around.
    -Developing muscles
    -Hair begins to grow on the head
    -Body is covered in soft fine hair called lanugo
    -Skin is covered with a whitish coating called vernix caseosa.
    -Fetus is about 10 inches long and weighs from 1/2 to 1 pound.
  • Month 6

    Month 6
    -Fetus's skin is reddish in color, wrinkled and veins are visible through translucent skin.
    -Finger prints are visible
    -Eyes begin to open
    -Fetus responds to sounds by moving or increasing the pulse.
    -Mom can notice “hiccups”
    -*If born prematurely, your baby may survive after the 23rd week with intensive care.*
    -Fetus is about 12 inches long and weighs about 2 pounds.
  • Month 7

    Month 7
    -Reserves of body fat
    -Hearing is fully developed.
    -Fetus changes position frequently and responds to stimuli, including sound, pain and light.
    -Baby would survive if born prematurely at this point
    -Fetus is about 14 inches long and weighs from 2 to 4 pounds.
  • Month 8 (Beginning of 3rd trimester)

    Month 8 (Beginning of 3rd trimester)
    -Brain developing rapidly at this time, and the fetus can see and hear.
    -Most internal systems are well developed, but the lungs may still be immature.
    -Fetus is about 18 inches long and weighs as much as 5 pounds.
  • Month 9

    Month 9
    -Lungs are close to being fully developed at this point.
    -Coordinated reflexes and can blink, close the eyes, turn the head, grasp firmly, and respond to sounds, light and touch.
    -Fetus is about 17 to 19 inches long and weighs from 5 ½ pounds to 6 ½
  • Month 10

    Month 10
    -you could go into labor at any time.
    -notice that less movement because space is tight
    -are about 18 to 20 inches long and weigh about 7 pounds.