Charlene7361go Charlene7361go Biology Answered Activity 1:Crossword puzzle. Write the answer on the crossword.Across 4. muscle in the heart 5. muscles that are voluntary and striated 6. tissue that binds and support Down 1. shooting support in areas of active growth 2. finger-like cytoplasmic extensions 3. epithelial tissue arrangement for secretion 5. specialized pores for exchange of gas