Gestation Flashcards
2.5 Weeks
shape and length are determined
neural plate begins for the brain
heat begins as single tube (may beat)
blood is not circulating yet
3 weeks
cells differentiate
1. Ectoderm: outer layer
skin, hair, nails, sensory, skin glands, nervous tissue
2. Mesoderm: middle layer
muscle, bones, circulatory organs, some endocrine glands
3. Endoderm: inner layer
digestive organs, liver, alimentary tract, linings, endocrine glands
28 days
head region is differentiated
head is 1/3 the length of the body (body is 1/5in)
brain and primitive spinal cord develop
rudimentary eyes, ears, and nose
initial limb buds appear
6 weeks
deciduous teeth form
8 weeks
becomes a fetus
organs become functional
length: 1 inch; wt: 2/3 oz
9 weeks
first muscle movements (mouth and jaw)
arms and legs respond to tactile stimulation
by then end of month: turns head, elbow bends, fans toes, moves hips (mom can’t feel except for hiccups)
Length: 3 in; Wt: 3/4 oz
16 weeks
fingerprints
mom can feel movement
Length: 6 inch; Wt: 4 oz
20 weeks
fetus turns and moves easily
sleep and wake patterns
sucking reflex
regular heart beat
Length: 12in: Wt 1 lb
24 Weeks
hair grows thicker
eyes open and close
Length: 14 in: Wt: 2lbs
28 weeks
Length: 16 inches: Wt: 2.5 lbs
Onset of : Rooting Reaction
Sucking
Moro
Traction Response
Plantar Grasp
Flexor Withdrawal
Crossed Extension
Extension Thrust
32 Weeks
strong growth
fetal movement slows down
Onset: Galent’s Response
34 Weeks
Onset: Neonatal Neck Righting
Neonatal Body on Body
35 Weeks
Onset: Proprioceptive Placing (LE)
Neonatal Positive Supporting
Spontaneous Stepping
40 Weeks
Birth
Onset: Proprioceptive Placing (UE)
Tonic Labyrinthine
Asymmetrical Tonic Neck
Birth-2 Months
Onset: Optical RIghting
Labyrinthine RIghting
Body on Head
