Answer:
The chance of a normal couple having a child with down syndrome is 1 to 600 births.
Explanation:
Down syndrome is a genetic flaw that occurs when the fetus is being formed.
A human cell considered normal has 46 chromosomes, divided into 23 pairs. For some unknown reason, an error may occur at the beginning of embryonic development and an extra chromosome is created, which binds to par 21. The result is cells with 47 chromosomes. This causes the said syndrome.
It is important to know that this failure happens at random. It is nobody's responsibility. It has not been proven to date that lifestyle, actions during pregnancy, smoking, drinking, medicines, environmental factors or kinship between the couple can influence this occurrence. She is not contagious either. The likelihood of a normal couple having a child with the syndrome is approximately 1 to 600 births.
Answer:
The neuro cognitive disorder of blood flow to the brain is called as dementia.
Explanation:
When mental function decreases due to mental diseases,the term is called dementia in medical terminology.
There are several causes of dementia are-
- Brain injury which is caused by trauma.
- Intra cerebral hemorrhage,blood clot in the brain
- Breathing problem like hypoxia.
- Cardiovascular problems like TIA, Stroke,heart infection etc.
- Alzheimer disease,Huntington disease,HIV,any injury in brain.
- Pick disease etc
