Resting membrane potential. Action potential and its propagation. Synaptic transmission. Mechanism of muscle contraction. The central and autonomic nervous system. Sensory receptors and sensory systems of the brain. Motor systems. Sleep and EEG. Motivation and emotion. Homeostatic and non-homeostatic regulations. Higher cognitive functions. The cardiovascular system. The respiratory system and regulation of respiration. Blood gas transport. The gastrointestinal system. The renal system.