Question 1
During rapid expulsion of air, which additional muscles are involved?
◦ neck muscles
◦ back muscles
◦ abdominal muscles
◦ pelvic muscles
◦ eye muscles
Question 2
Exchange across a membrane requires
◦ moisture only.
◦ transport proteins only.
◦ pressure gradients only.
◦ moisture and pressure gradients only.
◦ moisture, pressure gradients, and transport proteins.