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Most practitioners wait until at least 6 weeks to perform a first pregnancy ultrasound. However, a gestational sac can be seen as early as 4 1/2 weeks after your last period, and a fetal heartbeat can be detected at 5 to 6 weeks (though it might not always be).
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Studying rats
He watched their physiological changes when exposed to stress
The exocrine pancreas and major salivary glands are compound exocrine glands—specialized secretory organs that contain a branching ductular system through which they release their secretory products. The principal function of these exocrine glands is to aid in the digestion of food.
Answer:
Personal boundaries are developed to protect ourselves from being manipulated or used by others. Each individuals personal boundaries help identify him or her as a particular individual with certain thoughts and feelings that separate them form others. Self-boundaries help us to be identified as a unique individual.