28 wks
•
• Gut,
villi and crypts,
peristalsis
•
•
Surfactant in lungs
Alveolar walls thinning
•
• Pituitary coordination of
endocrine function
•
•
Hematopoiesis liver,
spleen, bone marrow
•
• Some myelination brain
•
• Response
to sound
•
Subcutaneous fat
•
• Skin keratinized, lanugo
hair