1. Muscles that rotate the scapula and elevate the rib cage
   - anterior serratus muscle, serratus anterior, musculus serratus anterior

Type of: serratus, serratus muscles

• XXY-syndrome
• XY
• xylan
• Xylaria
• Xylaria mali
• Xylaria polymorpha
• Xylariaceae
• xylem
• rydberg
• rydberg constant
• rydberg unit
• Rydberg's penstemon
• rye
• rye bread
• rye ergot
• rye whiskey
• rye whisky
• ryegrass
• Rynchopidae
• Rynchops
• ryot
• Rypticus
• Ryukyu Islands
• Ryukyuan
• Réaumur