Changes

==Function==

==Function==

The lateral and medial walls of the primary bronchi are membranous and flutter, which produces sound. Sound is produced on expiration. An increased pressure in the clavicular air sac causes the tympanic membrane of the syrinx to be forced into the lumen and vibrate. Tension of the membranes is controlled by the '''tracheolateral muscles'''. Each half of the syrinx can function independently allowing 2 different notes to be produced at the same time.

The lateral and medial walls of the primary bronchi are membranous and flutter, which produces sound on expiration. An increased pressure in the clavicular air sac causes the tympanic membrane of the syrinx to be forced into the lumen and vibrate. Tension of the membranes is controlled by the '''tracheolateral muscles'''. Each half of the syrinx can function independently allowing 2 different notes to be produced at the same time.

[[Image:Modified Syrinx.jpg|thumb|right|250px]]

[[Image:Modified Syrinx.jpg|thumb|right|250px]]

[[Category:Musculoskeletal System - Anatomy & Physiology]]

[[Category:Musculoskeletal System - Anatomy & Physiology]]

[[Category:Avian Respiratory System - Anatomy & Physiology]]

[[Category:Avian Respiratory System - Anatomy & Physiology]]

[[Category:To Do - AimeeHicks]][[Category:To Do - Review]]

[[Category:A&P Done]]