SOC 32 Lecture Notes - Lecture 19: Prefrontal Cortex, Sympathetic Nervous System, Heart Rate Variability
Document Summary
Gut- brain axis: the gut-brain axis refers to the continuous feedback loop between sensory neurons in our gastrointestinal tracts (from lips to rectum) and motor responses generated in our central nervous systems. Enteric microbiota (1: within the first few days of life the human gut is colonised by intestinal microbiota, a reference man" (70kg, 20yr, 1. 7m) contains on average about 30 trillion human cells and 39 trillion bacteria. Neural crest cells are a temporary group of cells that give rise to diverse cell groups including enteric neurones. Central and enteric nervous system are connected via the vagus nerve. Enteric nervous system the gut has a large, semi-autonomous (having the freedom to control itself) brain with 108 neurones. Brain gut enteric microbiota axis this bidirectional communication network includes the central nervous system the spinal cord the autonomic nervous system the enteric nervous system the hypothalamic pituitary adrenal (hpa) axis. Microbiota may interact with gba (gut brain axis) through:
