The function of the T-tubules in muscle contraction is to………
a) make and store glycogen
b) release Ca ions into the cell interior and then pick up again
c) make the action potential deep into the muscle cells
d) to hamper the nerve impulse
The site where the motor nerve impulse is transmitted from the nerve endings to the skeletal muscle cell membranes are the……….
a) neuromuscular junction
b) sarcomere
c) myofilaments
d) Z-discs
Myoglobin has a special function in the muscle tissue ……..
a) it breaks down glycogen
b) it is a contractile protein
c) it holds a reserve supply of oxygen in the muscle
d) none of these
