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The stages of labor and delivery. (A) During the dilation stage the cervix thins and dilates to 10 c
A breech birth. This image illustrates a newborn that has been delivered buttocks first.
Both humans and apes readily engage in learned imitative behavior.
Grieving behavior can have common expressions in different cultures.
Effect of stimulus type on graded potentials.
The stress response involves several pathways, which begin with a signaling stimulus