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Day 2-
Cranial flexure and torsion evident; heartbeat moves blood (16 to 17 somites).
Thyroid begins.
Anterior pituitary and pineal glands begin to develop.
Embryo turns on left side; allantois (embryonic membrane that fuses with chorion) begins. Functions of chorioallantois are: a) respiration; b) albumen absorption; c) absorption of calcium from shell; d) storage of kidney excretions.
Nasal pits, pharynx, lungs, anterior limb buds begin.
Cranial flexure and torsion evident; heartbeat moves blood (16 to 17 somites).
Thyroid begins.
Anterior pituitary and pineal glands begin to develop.
Embryo turns on left side; allantois (embryonic membrane that fuses with chorion) begins. Functions of chorioallantois are: a) respiration; b) albumen absorption; c) absorption of calcium from shell; d) storage of kidney excretions.
Nasal pits, pharynx, lungs, anterior limb buds begin.