Question

what structures are positioned between adjacent cisternae of the sarcoplasmic reticulum?

o neuromuscular junctions
o mitochondria
o a bands
o transverse tubules

Explanation:

The transverse tubules (T - tubules) are positioned between adjacent cisternae of the sarcoplasmic reticulum. They play a key role in the transmission of electrical impulses in muscle cells. Neuromuscular junctions are sites of communication between nerve and muscle cells. Mitochondria are the power - houses of the cell. A bands are part of the sarcomere structure related to muscle contraction but not located between the cisternae of the sarcoplasmic reticulum.

Answer:

D. Transverse tubules