-
Ovulation
- an ovum is releases by one of a woman's two ovaries.
-
Conception: egg and sperm
-sperm fertilizing the ovum
-ovum lives 12 to 24 hours, while sperm can fertilize an ovum for 48 to 72 hours -
1 month
-2 weeks old, small as a pin head
-egg attaches to lining of uterus
-critical stage for brain and spinal cord development
-internal organs and circulatory system begins to form
- the heart begins to beat -
2 month
-about 1/4 inch (6mm)
-face, eyes, ears, and limbs take shape
-bones begin to form -
3 months
-about 1 inch (25 mm)
-Nostrils, mouth, lips, and eyelids form
-buds for all 20 baby teeth
-fingers and toes are complete
-all organs present but still immature -
4 months
-about 3 inches (7.6 cm) and weighs 1 ounce (28g)
-can suck its thumb, swallow, hiccup, and move around
facial features become clearer -
5 months
-about 6 1/2 -7 inches (16-18 cm), weighs about 4-5 ounces (113-142 g)
-hair, eyelashes, and eyebrows appear
-teeth continue to develop
-organs are maturing
-becomes more active -
6 months
-about 8-10 inches (21-25 cm), weighs about 8-12 ounces (227-340 g)
-fat deposits under skin, but fetus appears wrinkled
-breathing movements begin -
7 months
-about 10 -12 inches (25-31 cm), weighs about 1 1/2 - 2 pounds ( 680-907)
- has periods of activity followed by periods of rest and quiet -
8 months
-about 14- 16 inches (36-41 cm), weighs about 2 1/1- 3 pounds (1.0-1.4 kg)
-rapid weight gain continues
-may react to loud noises with a reflex jerking action
-moves into a head-down position -
9 months
-about 17-18 inches (43-46 cm), weighs about 5-6 pounds (2.3-2.7 kg)
-weight gain continues
-skin becomes smooth as fat deposits continue
-movements decrease as the fetus has less room to move around
-acquires disease-fighting antibodies from mothers blood
-descends into pelvis, ready for birth
