The levator costae is one of the muscles that lift the ribs.

He broke his rib.

He broke his rib.

The levator costae longus is a part of our back muscles.

The levator costae brevis is a part of our back muscles.

He is working out his muscles at the gym every day.

He struggled to lift the heavy box.

She had an ophthalmologist examine her levator muscle problem.

He ate one apple.

I strained a muscle at the gym yesterday.