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7 st week of pregnancy: limbs develop
Elbows, knees, joints, wrists, ankles become finer. The innervation and musculature take shape. Sensorially, tactile and gustatory receptors begin to develop. The genital organs differentiate, i.e. a morphological transformation of the embryo allows the future female structures, the ovaries, or the male structures, the testicles, to be established. The profile of the small embryo begins to resemble that of a baby: the head is smaller than the rest of the body, the nose, mouth and ears are distinct.