Question

the area from one z - disc to the next z - disc is referred to as the______. answers: a - e a i band b sarcoplasmic reticulum c sarcomere d sarcolemma e a band

Explanation:

In muscle structure, the sarcomere is the basic unit of striated muscle tissue. It is defined as the region between two consecutive Z - discs. The I - band (A) contains only thin filaments (actin) and is part of the sarcomere. The sarcoplasmic reticulum (B) is a membrane - bound structure involved in calcium storage. The sarcolemma (D) is the muscle cell membrane. The A - band (E) contains both thick (myosin) and thin filaments and is also part of the sarcomere. Since the question asks for the area between two Z - discs, the correct answer is sarcomere (C).

Answer:

C. sarcomere