QUESTION 1 Each muscle fiber i

QUESTION 1

Each muscle fiber is innervated by 

a.one nerve fiber 

b.two or more nerve fibers 

c.an autonomic nerve fiber 

d.none of the above 

QUESTION 2

The plasma membrane of a muscle cell is referred to as which of the following? 

a.sarcoplasmic reticulum 

b.sarcolemma 

c.plasmalemma 

d.none of the above 

QUESTION 3

1. Which of the following is a protein located in myofibrils? 

a.actin 

b.myosin

c.dystrophin 

d.both a and b 

QUESTION 4

Thick  filaments contain 

a.actin 

b.myosin 

c.actin and myosin 

d.none of the above 

QUESTION 5

Thin filaments contain

a.myosin

b.actin

c.choline 

d.none of the above