El hipotálamo produce la hormona liberadora de corticotropina CRH que estimula la glándula pituitaria para secretar la hormona adrenocorticotropina ACTH.
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Answer:
1. Stimulus
2. Receptors
3. Control center
4. Effector
5. Repeats as long as needed
Explanation:
Lactation during breastfeeding is regulated by positive feedback. As the baby starts sucking, the stimulus (suckling) is sensed by the receptors present in the skin of mammary glands. These signals are carried to the control center, the hypothalamus. Signals are sent to the posterior pituitary to release oxytocin hormone in the blood. The hormone reaches its target organ, mammary glands and stimulates the ejection of milk. Therefore, milk ejection is stimulated by hormone oxytocin in response to suckling.
Since the stimulus, suckling serves to intensify the milk ejection, the regulation is positive feedback. Here, change in a condition triggers a response to intensify the change, not to counteract it.
The chromatids are made of a substance called chromatin. This is a single, very long strand of DNA. ... The chromatin is copied, so you now have 92 strands, that are each spiraled up to form the chromatids. The 2 copies of each chromatid are joined together by a centromere to form a chromosome.