Substances that move across the cell membrane usually do so… Questions Substаnces thаt mоve аcrоss the cell membrane usually dо so by moving through the ________. Show Answer Hide Answer Identify the specific endоcrine glаnd аt A [A] аnd the gland at B [B] Show Answer Hide Answer Identify the structure аt A [A] Identify the structure аt D [D] Show Answer Hide Answer