Whereas the content standards will provide the topic of the lesson and what exactly the students should be doing with that topic (e.g., solving problems, creating models, ranking ideas), the English language proficiency or development standards help to identify language skills and functions that students should be working on to achieve academic language fluency.
Tay-Sachs disease is a gangliosidosis characterised by: An exaggerated startle response. Delay in psychomotor development. Hypotonia (followed by spasticity) Visual loss. A macular cherry-red spot. Pathogenesis. Tay-Sachs disease (and its variants) are caused by absence or defects of the alpha subunit of hexosaminidase A.
Infantile, juvenile and adult are the different forms of Tay-Sachs disease. Doctors classify this condition based on the age that the symptoms begin. A child whose symptoms begin before the age of six months will be formally diagnosed with infantile Tay-Sachs disease. Juvenile Tay-Sachs disease is a more rare form of this condition. The symptoms of juvenile Tay-Sachs disease usually present themselves when the child is between the ages of two and 10. In extremely rare cases, people in their 30s and 40s have developed Tay-Sachs disease.