Chapter 6 diGesTioN ABSORPTION §1. Introduction Concept of digestion absorption k Mechanical chemical digestion o Characteristics of digestive smooth muscles *k General characteristics k Electrophysiological characteristics Resting potential (rP) Slow wave or basic electrical rhythm (BEr) Action potential (AP)
Chapter 6 DIGESTION & ABSORPTION § 1. Introduction • Concept of digestion & absorption * Mechanical & chemical digestion • Characteristics of digestive smooth muscles * General characteristics * Electrophysiological characteristics Resting potential (RP) Slow wave or basic electrical rhythm (BER) Action potential (AP)
g 5 mv 0 (I) 35 Electrical activities contraction of digestive smooth muscles
Electrical activities & contraction of digestive smooth muscles
o Secretion of digestive glands k Main functions of digestive fluids o Gastrointestinal innervation k Intrinsic (or enteric) nervous system Submucosal myenteric plexus k Extrinsic nervous system Parasympathetic sympathetic nerves o Gastrointestinal hormones 米 General functions 米 Brain- gut peptides
• Secretion of digestive glands * Main functions of digestive fluids • Gastrointestinal innervation * Intrinsic (or enteric) nervous system Submucosal & myenteric plexus * Extrinsic nervous system Parasympathetic & sympathetic nerves • Gastrointestinal hormones * General functions * Brain-gut peptides
AAAUWM! 黏膜层 黏膜肌层 黏膜下层和 神经丛 ?环形肌层 肌间神经丛 }纵形肌层 传入纤维 浆膜层 交感神经 节后纤维 脊髓传入纤维 迷走神经传入 Intrinsic 和传出纤维 (or enteric nervous 节衔纤维 systen
Intrinsic (or enteric) nervous system
副交感神经系统 延 髓 交感神经系统 胸段 腹腔神经节 肠系膜下 神经节 腰段 分 骶段 Extrinsic nervous system
Extrinsic nervous system