B) nature vs nurture debate
Answer:
Answer is : 8 weeks
Explanation:
The heart of fetus starts to beat at around 6th week of pregnancy and can be heard through sonographically however by week 8th, one can hear it through stethoscope.
Answer:
Satellite cells
Explanation:
Satellite cells are the type of glial cells present in the peripheral nervous system (PNS) of brain. These cells cover the cell body of neurons present in the PNS.
Satellite cells support neurons and supply nutrients to the neurons. These cell also provide structural function to the neurons present in the PNS. These cells also control the micro environment of the cell.
Thus, the correct answer is option (a).