The primary muscle for inhalation has two distinct shapes

Last updated: 8/8/2022

The primary muscle for inhalation has two distinct shapes depending on if its contracted or relaxed, which answer fits for this muscle? 1. Relaxed it is dome shaped and contracted its flat 2. It depends on how you are breathing 3. Relaxed it is flat and contracted it is dome 4. Shape of the muscle does not shaped change