HD 302 Lecture Notes - Lecture 1: Secondary Sex Characteristic, Sex Organ, Menarche
4 Apr 2017
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Document Summary
From latin word pubertas (adult) capable of sexual reproduction. Hormones regulated by endocrine system lead to physical changes. No new hormones are produced and no new bodily systems develop at puberty. Endocrine system * terminology is important * Organs that stimulate particular parts of the body to respond in specific ways. Neurons in the brain that play important roles at puberty. Hormonal feedback loop (hpg axis) hypothalamus pituitary glad axis. Figure 1: levels of sex hormones are regulated by a feedback system composed of the hypothalamus, pituitary glad, and gonads. Rising levels of leptin signal hypothalamus to stop _inhibiting_ puberty (at least in females) Maturation of adrenal glands leads to physical (somatic) changes. Timing of physical changes in adolescence varies by: 5 chief physical changes (somatic) state, explain, support with examples (actual person: rapid acceleration of growth, further development of sex organs, development of secondary sex characteristics, changes in quantity/distribution of muscle and fat.
