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In collection:Comparative biomechanics of movement
J Exp Biol (2021) 224 (11): jeb242240.
Published: 4 June 2021
... of their sole, such as living crocodylians, intermetatarsal mobility offers the potential for a continuum of reconfiguration within the foot itself. Alligator hindlimbs are capable of postural extremes from a belly sprawl to a high walk to sharp turns – how does the foot morphology dynamically accommodate...
Includes: Supplementary data
J Exp Biol (2019) 222 (7): jeb201079.
Published: 1 April 2019
... http://www.biologists.com/user-licence-1-1/ Summary: Blood in the left aorta of American alligators does not contain elevated P CO 2 levels during digestion. Reptile Alligator Digestion Cardiovascular Cardiac shunt Acid–base balance Blood gases Crocodilians have...
J Exp Biol (2012) 215 (23): 4217–4230.
Published: 1 December 2012
... on the face and body of crocodilians and documented related behaviors for an alligatorid ( Alligator mississippiensis ) and a crocodylid ( Crocodylus niloticus ). Each of the ISOs (roughly 4000 in A. mississippiensis and 9000 in C. niloticus ) was innervated by networks of afferents supplying multiple...
Includes: Multimedia, Supplementary data
J Exp Biol (2009) 212 (21): 3553–3563.
Published: 1 November 2009
... during diving in aquatic species. We eliminated R–L shunt in American alligators( Alligator mississippiensis ) by surgically occluding the left aorta(LAo; arising from right ventricle) upstream and downstream of the foramen of Panizza (FoP), and we tested the hypotheses that this removal of R–L shunt...
J Exp Biol (2008) 211 (10): 1565–1570.
Published: 15 May 2008
... to ventilation. HPV is an ancient and highly conserved response expressed in the respiratory organs of all vertebrates. However, the underlying mechanism and the role of the endothelium remain elusive. Isolated intrapulmonary arteries (internal diameter <346 μm) from the American alligator Alligator...
J Exp Biol (2008) 211 (7): 1141–1147.
Published: 1 April 2008
...T. J. Uriona; C. G. Farmer SUMMARY We used electromyography on juvenile American alligators to test the hypothesis that the following muscles, which are known to play a role in respiration, are recruited for aquatic locomotion: M. diaphragmaticus, M. ischiopubis, M. rectus abdominis, M...
J Exp Biol (2007) 210 (16): 2811–2818.
Published: 15 August 2007
...Frank E. Fish; Sandra A. Bostic; Anthony J. Nicastro; John T. Beneski SUMMARY Crocodilians, including the alligator ( Alligator mississippiensis ), perform a spinning maneuver to subdue and dismember prey. The spinning maneuver, which is referred to as the `death roll',involves rapid rotation about...
J Exp Biol (2006) 209 (21): 4313–4318.
Published: 1 November 2006
...T. J. Uriona; C. G. Farmer SUMMARY The importance of the diaphragmaticus muscle to vital capacity was investigated in juvenile American alligators by transection of this muscle. In both fasting and post-prandial animals a pneumotach was used to study vital capacity that was stimulated by either...
J Exp Biol (2005) 208 (16): 3047–3053.
Published: 15 August 2005
...T. J. Uriona; C. G. Farmer; J. Dazely; F. Clayton; J. Moore SUMMARY Esophageal structure and function were studied in juvenile American alligators ( Alligator mississippiensis ). The anatomy of alligators differs from humans in several important aspects: the crocodilian esophagus is more muscular...
J Exp Biol (2005) 208 (6): 993–1009.
Published: 15 March 2005
...Stephen M. Reilly; Jeffrey S. Willey; Audrone R. Biknevicius; Richard W. Blob SUMMARY Alligator hindlimbs show high torsional loads during terrestrial locomotion, in sharp contrast to the bending or axial compressive loads that predominate in animals that use parasagittal limb movements...
J Exp Biol (2003) 206 (23): 4327–4340.
Published: 1 December 2003
... to test how the activity patterns of hindlimb muscles in American alligators ( Alligator mississippiensis Daudin)differ between sprawling and more upright postures. Previous force platform analyses suggested that upright posture in alligators would require greater activation by hindlimb extensors...
J Exp Biol (2002) 205 (13): 1843–1851.
Published: 1 July 2002
...Douglas A. Syme; Kurt Gamperl; David R. Jones SUMMARY Alligators and other crocodilians have a cog-wheel valve located within the subpulmonary conus, and active closure of this valve during each heart beat can markedly and phasically increase resistance in the pulmonary outflow tract...
J Exp Biol (1991) 158 (1): 539–564.
Published: 1 July 1991
...G. SHELTON; D. R. JONES Pressure recordings from the heart and major arteries of the alligator show that a conventional relationship exists between the left ventricle and the right aorta. Pressure gradients from ventricle to aorta during systole are very small. Right aortic blood flow rises rapidly...