The cerebral cortex is the cerebrum 's (brain) outer layer of neural tissue in humans and other mammals.It is divided into two cortices, along the sagittal plane: the left and right cerebral hemispheres divided by the medial longitudinal fissure.n large mammals, the cerebral cortex is folded, giving a much greater surface area in the confined volume of the skull. A fold or ridge in the cortex is termed a gyrus (plural gyri) and a groove or fissure is termed a sulcus (plural sulci).
Could be coxsackie: Small red blisters on palms & soles can have several causes. Commonly a viral infection (coxsackie virus) causes hand-foot-mouth disease. Treatment is for symptoms. See your doctor since there are other causes which need antiboitics. ...Read more.
Blood blisters in the mouth could be due to canker sores, also known as aphthous ulcers and due to cold sores. The cause of canker sores is still not known though they can be very painful and cause great discomfort to the person.