More or less all the systems below the level of injury are affected may it be the digestive, circulatory or respiratory systems etc. But again the extent of damage depends on the level of injury and the severity of the injury. In the initial phase loss of control over bladder, bowel and pressure ulcers are the main cause of worry, anger and depressions. Later they may also come to realise about loss of sensation, erection and thus inability to perform sex. It too becomes a major worry in addition to bladder and bowel management. At the hospital you would be re-trained in how to perform these vital functions, may it be bladder, bowel, sexuality or keeping free from pressure sores Ask you doctor for more information.