Question

Which are sources of adult stem cells? Check all that apply.

1. bone marrow
2. amniotic fluid
3. brain 
4. gametes
5. liver
6. embryo

Answer 1

1. Bone marrow
6. Embryo
+ Umbilical chord

Answer 2

Answer: The correct answer is -

1. bone marrow

3. brain

5. liver.

Stem cells are the undifferented cells (that is without having a specific function) of the body that are present in multicellular organisms in their adult as well as their embryonic stage.

They are capable of producing specialised cells (such as blood cells, liver cells, muscle cells etc) through a process called differentiation.

In adult stage, they are present in various body organs and tissues such as bone marrow, brain, skeletal muscles, testes, ovaries, blood vessels, liver etc.

Thus, option 1), 3), and 5) are the right answers.