CSB328H1 Lecture Notes - Lecture 1: Prenatal Development, Pharyngeal Arch, Human Embryogenesis
28 Aug 2019
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Lecture 1: what is development: what are the changes the take place during our development. State of homeostasis at young adult stage (we can continue this if we are healthy for 30 years) Rate of renewal and degeneration of cells. Developmental process: child growth, changes in body proportions, brain development, puberty changes in production of sex hormones. Production of mature germ cells (differentiation of egg and sperm: young adults homeostasis through regeneration of tissues (stem cells, senescence menopause, shift from muscle to fat production (gaining weight/loss of strength), other changes. Increase in muscle mass like cancer (developmental disease) Our body undergoes changes throughout our life: development never stops, brain develops continuously. Human embryogenesis: stage 1 zygote (single cell with immense potential, each stage, we develop new potential/development. Both have heads, heart, eyes, nostrils, somytes (backbone), peddles (arms and legs: pharyngeal arches develop into. Part of upper and lower jaw in reptiles and birds.
