The muscle fiber is the basic unit of the muscular system. true or false

The muscle fiber is definitely a basic unit to the muscular system, so the answer is true

Well a pediatrician is a children’s doctor and a obstetrician is a doctor that delivers babies and cares for pregnant women.

Probably because you wake up early. even when i get a good nights sleep i still feel tired if i wake up early. or maybe you just need coffee.