Position and structure of the monkey lips in the sperm whale …
In the sperm whale, these monkey lips are a thick flap valve consisting of extremely dense collagen which frame the slit-like aperture and seem to represent an air- tight valve because...
Functional Morphology of the Nasal Complex in the Harbor …
Mar 20, 2009 · Ventral to the border between the vestibulum and the paired nasal passages, the phonic lips (monkey lips) are situated (Fig. 1: AL). These lips are represented by two low horizontal band-like prominences in the rostral and in the caudal wall of each nasal passage which oppose each other and thus stand perpendicular to the air stream: according ...
Morphology of the Nasal Apparatus in Pygmy
Apr 30, 2015 · The external right nasal passage starts at the ventral aspect of the spermaceti chamber (sc), just dorsal to the right bony naris (Rbn), and runs laterally into the vocal chamber between the phonic lips (white triangles).
(A), Frontal view of the reconstructed sperm whale head with …
Accordingly, the potential sound path in the spermaceti organ swings back from the monkey lips on the right to the centre of the acoustic mirror at the amphitheatre, continues through a...
Anatomy of nasal complex in the southern right whale,
The vibrating tissues of the ‘monkey-lip-dorsal-bursae complex’ (Amundin & Andersen, 1983; Amundin & Cranford, 1990; Cranford et al. 1996) surround the nasal passages and generate sounds. A specialized fat structure (melon) appears to focus and transfer the sounds to water (Norris, 1968 , 1969 ).
Three-dimensional reconstruction of the head of an adult sperm whale …
Recent examinations interpret this enormous nasal apparatus of sperm whales as a bio-acoustic machine capable of generating extremely loud click sounds by a pneumatic mechanism at the monkey...
May 12, 2014 · Just deep to the open-ing of each vestibular sac is a pair of phonic (“monkey”) lips (Cranford et al., 1996). Each pair is formed by one lip embedded into the spiracular cavity’s rostral wall and one into its caudal wall, termed the “anterior” and “posterior” phonic lips, respectively, by Cranford et al. (1996) (Fig. 1).
monkey lip - Wiktionary, the free dictionary
The photo inset presents the actual surface of the ventral monkey lip of an adult sperm whale (photo width represents 5 cm) projected on the same relative position and size in the drawing showing the whitish band of the groove and tongue complex.
Sound production and propagation in cetaceans - ScienceDirect
Jan 1, 2021 · Toothed whales generate sound from the phonic lips by letting air flow across them to excite vibration. The sound propagates through the various structures in the forehead and is finally projected into the water. All toothed whales produce clicks for echolocation, while most of them can also emit tonal whistles for intraspecific communication.
Apr 10, 2014 · For sound generation, toothed whales have specific valves (monkey lips 1⁄4 phonic lips) associated with small fat bodies (dorsal bursae 1⁄4 bursae cantantes), which can vibrate in the air current and generate sound waves in adjacent tissues (Cranford, 1988; Cranford et al., 1996; Dubrovsky et al., 2004; Huggenberger et al., 2009).
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