Prenatal/Neonatal Flashcards
Germinal period (time)
fertilization - 2wks
Embryonic period (time)
3-8wks
Fetal period (time)
9wk - birth
Aberrations during the embryonic period result in ____
malformations
Aberrations during the fetal period result in ____
deformations
What happens during the embryonic period?
Differentiation of organ systems.
Blastula becomes Gastrula.
Endoderm of the gastrula - what organ systems?
Digestive
Respiratory
Mesoderm of the gastrula - what organ systems?
Circulatory Muscle Bone Excretory Reproductive
Ectoderm of the gastrula - what organ systems?
Nervous
Sensory
Skin
Order of sensory system development (first to last)
Tactile Vestibular Olfactory Auditory Vision
Limb buds appear __ weeks post-conception
4 weeks
Primary ossification centers
diaphysis of long bones
Secondary ossification centers
epiphysis
Bone formation completes by around age __
20years
Joint formation completes by around age __
early fetal period