Topics: Medical Physiology, Cell Signaling, Membrane Transport, Membrane Potential, Physiologic Regulation, plasma membrane structure, Solute Transport Mechanisms, Resting Membrane Potential, cellular signaling, neuromuscular physiology, nervous function, nervous system, action potential synaptic transmission, neurotransmission, Sensory Physiology, sensory system, somatosensory system, visual system, auditory system, vestibular system, Gustatory Systems, Olfactory Systems, motor system, autonomic nervous system, Parasympathetic Nervous System, Sympathetic Nervous System, Autonomic Integration, Hypothalamus, Brain Electrical Activity, Higher Cognitive Skills, Skeletal Smooth Muscle, Smooth Muscle, Motor Neurons, Excitation, Skeletal Muscle Metabolism, Skeletal Muscle Contraction, Muscle Plasticity, Epigenetics, Endocrine Muscle, Smooth Muscle, blood immunology, blood composition, blood function, Red Blood Cells, White Blood Cells, Platelet Formation, Blood Cell Formation, Blood Clotting, Immunology, Organ Interaction, Homeostasis, Immune System Activation, Immune Detection System, Immune System Defenses, Acute Inflammation, Chronic Inflammation, Anti-inflammatory Drugs, Organ Transplantation, Immunology, Immunologic Disorders, Neuroendoimmunology, cardiovascular physiology, Hemodynamics, Cardiac Muscle Mechanics, Cardiac Pump, Cardiac Cycle, Cardiac Excitation–Contraction Coupling, Cardiac Performance, Cardiac Output, Systemic Circulation, Arterial Pressure Measurement, Central Blood Volume, Microcirculation, Lymphatic System, Coronary Circulation, Cerebral Circulation, Hepatic Circulation, Skeletal Muscle Circulation, Cutaneous Circulation, Fetal Circulation, Placental Circulation, Circulatory Shock, respiratory physiology, ventilation, Spirometry, Lung Volumes, Minute Ventilation, Airway Resistance, Gas Transfer, Diffusing Capacity, Pulmonary Circulation, Ventilation, body fluids, Kidney Function, nephron, Renal Blood Flow, Glomerular Filtration, Glomerular Hemodynamic Forces, Tubular Reabsorption, Tubule Secretion, Urinary Concentration Mechanisms, Electrolyte Balance, fluid balance, Acid–Base Homeostasis, gastrointestinal physiology, Salivary Secretion, Gastric Secretion, Pancreatic Secretion, Biliary Secretion, Intestinal Secretion, Carbohydrate Digestion, Carbohydrate Absorption, Water Absorption, Electrolyte Absorption, Mineral Absorption, Vitamin Absorption, Liver Functions, Immune Surveillance, Gastrointestinal Regulation, temperature regulation, exercise physiology, Heat Dissipation, Thermoregulatory Control, Heat Acclimatization, endocrine physiology, Endocrine Control Mechanisms, Hypothalamus, Pituitary Gland, Thyroid Gland, Thyroid Hormone Synthesis, Adrenal Gland, Adrenal Medulla Catecholamines, Endocrine Pancreas, Islets of Langerhans, Islet Hormone Synthesis, Insulin, Glucagon Action, Diabetes Mellitus, Plasma Calcium, Phosphate Regulation, Bone Dysfunction, reproductive physiology, Male Reproductive System, Testicular Function