Vygotsky's social account of psychology is comprehensible when viewed in relation to his political views and his early work experience. A brief discussion of this context is therefore in order before explaining the details of his psychological stand- point.
1 Central cyanosis and its causes are all associated with peripheral cyanosis. 2  Decreased pumping of blood by the heart or reduced cardiac output. 3  This is seen in heart failure or circulatory shock. 4  Diseases of circulation like thrombosis or embolism. 5  Constriction of blood vessels of the limbs, fingers and toes.
Complete loss of function of a voltage gated sodium channel, Nav1.7 is believed to be the cause of this condition. This essay will detail the genetic description of SCN9A/ Nav1.7, normal function of the voltage gated sodium channel, mutations leading to altered protein...