Chat with AIExam 8: How Does the Nervous System Develop and Adapt
After 9 weeks of prenatal development, a(n) _____ is considered a(n) _____.
(32) 
VerifiedA
The majority of glial cells migrate to their correct locations via:
(25) VerifiedB
Define masculinization. What hormones are responsible for masculinization, and on what brain areas do they have the greatest influence?
(30) 
Answered by Examlex AI CopilotMasculinization refers to the process by which male physical and behavioral characteristics are developed, particularly during embryonic development and at puberty. This process is largely driven by the influence of hormones, specifically androgens, which are male sex hormones. The most well-known and potent androgen is testosterone.
Testosterone and other androgens are responsible for the development of male secondary sexual characteristics, such as increased muscle mass, body hair, deepening of the voice, and the growth of the penis and testes. In addition to these physical changes, androgens also play a significant role in the development and function of the male reproductive system.
In terms of brain development, androgens have a significant impact on the sexual differentiation of the brain. This process begins in the womb and continues through puberty. The hormones influence various brain areas, including:
1. Hypothalamus: This brain region is crucial for regulating hormones and is involved in many aspects of sexual behavior. Androgens affect the development and function of the hypothalamus, which in turn influences the release of gonadotropin-releasing hormone (GnRH). GnRH is essential for the regulation of luteinizing hormone (LH) and follicle-stimulating hormone (FSH), which are key hormones in sexual development and reproductive function.
2. Amygdala: The amygdala is associated with emotion, aggression, and sexual behavior. Androgens can affect the structure and function of the amygdala, potentially influencing behaviors typically associated with masculinity, such as aggression and dominance.
3. Preoptic area: This area of the hypothalamus is involved in the regulation of sexual behavior. Androgens can influence the development and activity of neurons in the preoptic area, which can affect sexual motivation and performance.
4. Cerebral cortex: While the effects of androgens on the cerebral cortex are less direct, they may still influence cognitive functions and behaviors that are often seen as gender-specific.
It's important to note that while androgens like testosterone play a significant role in masculinization, the process is complex and involves a delicate interplay between genetics, hormones, and environmental factors. Additionally, the degree of masculinization can vary widely among individuals, and not all aspects of masculinity are solely determined by androgens.
Explain how language develops over the first 6 years of life. Which brain regions demonstrate the greatest changes?
(43) Neurogenesis (the process of forming neurons) is largely complete after about _____ weeks of gestation.
(35) _____ can be used to stimulate progenitor cells to produce neuroblasts.
(29) The ability to plan efficiently is a cognitive behavior controlled by the:
(26) In an experiment examining the ability of children to discriminate speech sounds of various languages, Werker and Tees found that:
(31) After the second week of prenatal development, a(n) _____ progresses to become a(n) _____.
(43) Many _____ illnesses become apparent during adolescence, likely due to the heightened sensitivity and vulnerability of the brain to stress, drugs, and trauma during this time.
(38) The dendritic spine density on the dorsolateral prefrontal cortex (DLPFC) is greatest in:
(28) 
Filters
- Essay(0)
- Multiple Choice(0)
- Short Answer(0)
- True False(0)
- Matching(0)