Structure and classification of muscles, excitation and contraction theories and principles involved in muscle contraction, resting membrane and action potentials. Generation of impulse in excitable tissues, nerves and neuromuscular transmission. Simplex reflex s and spinal reflexes. Spinal cord ascending pathways, receptors, thalamus-sensory and motor cortex. Control of pasture and movement. The reticular activating system. Sleep, neural center regulating visceral functions. Neuropsychological basis of instinctive behavior, conditioned reflexes, learning and temperature regulation. Sympathetic and parasympathetic pathways. Role in the various systems especially cardiovascular, respiratory and gastrointestinal.