Salivary gland: Savilon -- Oesophageal sphincters: Upper oesophageal sphincter and lower oesophageal sphincter -- Stomach as an Acid Producer -- Homeostasis of gastric acid secretion: neurocrine, paracrine and endocrine system, proton pump inhibitors. Alkaline tide -- Gastric mucosal barrier, Helicobacter pylori -- Gastric motility: (Migrating Motor Complex, Receptive Relaxation, Accommodation, Retropulsion) -- Gastric Emptying -- Gastrointestinal Rhythmic Contractions Electrical Basis: Slow wave potential -- Migratory Motor Complex (or migrating myoelectric complex), MMC, Motilin -- Motility: Peristalsis, Segmentation, Haustration and Mass movement -- Motility: Peristalsis, Segmentation, Haustration and Mass movement -- Recycling of bile salts: Enterohepatic Circulation (EHC) -- Intestinal Fluid Handling: Absorption -- Intestinal Fluid Handling: Secretion -- Pancreatic Exocrine function: Pancreatic acinar cell in pancreatic secretion, cholecystokinin (CCK), Auto- digestion -- Pancreatic Exocrine function: Pancreatic ductal cell, CFTR chloride channel. Secretin -- Carbohydrate Digestion: Small intestine as the site of digestion and absorption for dietary carbohydrate -- Fat digestion: Bile salt, emulsification, micelles, lipases, chylomicrons -- Protein Digestion -- Protein Absorption -- Defecation Reflex: Parasympathetic defecation reflex, intrinsic myenteric defection reflex -- Resting Membrane Potential (RMP) -- Equilibrium Potential -- Membrane conductance -- Action Potential -- Neuronal excitability -- Neuronal refractory period -- Initiation zone -- Saltatory conduction -- Firing rate -- Post-synaptic potentials -- Synaptic delay -- Summation -- Neurotransmitter -- Presynaptic inhibition -- Adequate stimulus -- Stimulus transduction -- Stimulus coding -- Adaptation -- Sensory discrimination (acuity) -- Motor neurons -- Neuromuscular junction -- Proprioception -- Spinal reflex -- Alpha-gamma coactivation.