The occurrence of mucus in urine can be a symptom of various abnormalities of the immune system, the excretory system and/or the reproductive system. Mucus in urine may also indicate the presence of underlying conditions such as urinary tract infection, cystitis or calculi.
The brain sends messages through the spinal cord and nerves of the peripheral nervous system to control the movement of the muscles and the function of internal organs. The basic working unit of the nervous system is a cell called a neuron. The human brain contains about 100 billion neurons.
The human brain is a complex organ controlling every voluntary and involuntary action we make. The brain controls basic motor skills, heart and breathing rates, emotions, behavior and decision-making. There is a part of the brain responsible for addiction. The name for this part of the brain is the limbic system. This system, also known as the âbrain reward system,â is responsible for producing feelings of pleasure.