When Franklin slams against a bulkhead, the entire wall moves.
At the end of the scene where Marcus and Ivanova are talking, and she falls off the bed, as the camera pans to the left, you can see a hand reach forward, presumably to pull the bed down on the other end, and catch Claudia Christian before her head hits the floor. It's most noticeable because the crew's hand knocks the pillow to the side.