[PSY BEH 112D] - Midterm Exam Guide - Ultimate 33 pages long Study Guide!

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UC-Irvine
PSY BEH 112D
MIDTERM EXAM
STUDY GUIDE
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PUBERTY: AN OVERVIEW
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Puberty
3 Physical Manifestations
in Puberty:
Endocrine System
Hormones
Glands
Gonadotropin-releasing
Hormone (GnRH) neurons
The Hormonal Feedback
Loop
Derived from the latin word, pubertas ( “adult” )
Definition:
The period during which an individual becomes
capable of sexual reproduction
1. Rapid acceleration in growth: increase in height + weight
2. Development of the primary sex characteristics: gonads
(sex glands) = hormonal changes
3. Development of secondary sex characteristics: genitals,
breasts, growth of pubic, facial, and body hair
No new hormones are produced at puberty.
- The levels of some hormones that have been present
since before birth increase, whereas others decline.
Produces, circulates, and regulates levels of hormones
Specialized substances that are secreted by 1 or more
endocrine glands and enter the bloodstream and travel
throughout the body
Organs that stimulate particular parts of the body to respond in
specific ways
Many hormones that play important roles at puberty carry their
instructions by activating these neurons.
The endocrine system receives its instructions to increase or
decrease circulating levels of particular hormones from the
central nervous system, through the GnRH neurons in the
brain
The system works like a THERMOSTAT
- Hormonal levels are “set” at a certain point, which differ
depending on stage of development
- When a certain hormonal level dips below the
endocrine system’s set point for that hormone,
secretion of the hormone INCREASES; when the level
reaches the set point, secretion temporarily stops
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