In the above picture the letter B can be labeled as: Screen… Post author By Anonymous Post date June 5, 2025 Related Posts:In the above picture the letter D can be labeled as:…In the above picture the letter B can be labeled as:…In the above picture the letter D can be labeled as:… ← In the picture shown here, number 3 is: Screen Shot 2022-06-… → Sarcoplasm is the plasma membrane of a muscle cell