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

Type of: serratus, serratus muscles

• polls
• pollster
• pollucite
• pollutant
• genus Oenothera
• genus Oestrus
• genus Okapia
• genus Olea
• genus Oleandra
• genus Olearia
• genus Olfersia
• genus Oligoplites
• genus Oligoporus
• genus Ommastrephes
• genus Omphalotus
• genus Oncidium
• genus Oncorhynchus
• genus Ondatra
• genus Oniscus
• genus Onobrychis
• genus Onoclea
• genus Ononis
• genus Onopordon
• genus Onopordum
• genus Onosmodium