Skip to main content
Fig. 5 | BMC Zoology

Fig. 5

From: The hummingbird syrinx morphome: a detailed three-dimensional description of the black jacobin’s vocal organ

Fig. 5

Hypothetical biomechanics of the black jacobin’s syrinx. In a, caudal view of a fresh dissection. Upper panel: resting position; middle panel: inwards movement of the LL, the closing mechanism; lower panel: stiffening of the ML, tension control. In b, schematic representation of the syrinx, cranial view. Top: resting condition; bottom: the left half of each indicates a hypothetical muscle as it actuates the opening and closing mechanisms and tension control. The shaded areas indicate the final position of the syrinx in relation to the resting position and the red dashed arrows refer to the muscle probably involved in the movement. ML, medial labium; MTM, medial tympaniform membrane; LL, lateral labium; B1, first bronchial half-ring; B2, second bronchial half-ring; ML, medial labia; LL lateral labia; CrS, ventro-dorsal cranial syringeal muscle; CeS, central syringeal muscle; CaS, caudal syringeal muscle

Back to article page