PSC 101 Lecture Notes - Lecture 7: Apoptosis, Sonic Hedgehog, Dsm-5
Document Summary
Stages of neural development: neurogenesis = mitosis produces new neurons tube called the ventricular zone. Neurons themselves do not divide (but they are a product of cell division) New neurons and glial cells are formed from stem cells in a part of the neural. Neurogenesis can occur in a few parts of the brain. Gonadotropin releasing hormone (gnrh) = made in hypothalamus but come from some place else. During cell migration cells move away from the ventricular layer. Radial glial cells = has a long process (tail) that act as guides for stem cells to. In females, gnrh is the master regulator of estrogen and progesterone secretion from ovaries fertility influences sperm production. Activity of gnrh producing neurons controls menstrual cycles and. In males, gnrh is the master regulator of testosterone secretion in testes and. Op = olfactory epithelium; gnrh formed here then migrated through the brain to hypothalamus. Mini dots represent gnrh positive cells path of migration.
