Phalloidin labeling of developing muscle in embryos of the polychaete...

The Biological Bulletin;  October 1, 2001 ;     700+ words ......days after fertilization, longitudinal muscles of the body wall begin to form. Initially eight longitudinal muscles appear in the following sequence...lateral muscles form (Fig. 1b). Longitudinal muscles initially appear as thread-li...

peristalsis

Webster's NewWorld Dictionary;      68 words ......alimentary canal and certain other hollow organs, consisting of alternate contractions and dilations of transverse and longitudinal muscles that move the contents of the tube onward --peri|stal'tic adj. --peri|stal'ti|cal|ly adv. Copyright 1994, 1991, 1988...

taenia

The Oxford American College Dictionary;      105 words ......Anatomy a flat ribbonlike structure in the body. ∎  ( taeniae coli / ˈkōlī / ) the smooth longitudinal muscles of the colon. 2. Architecture a fillet between a Doric architrave and frieze. 3. (in ancient Greece) a band or ribbon...

Peptides controlling stiffness of connective tissue in sea cucumbers.

The Biological Bulletin;  June 1, 1998 ;     700+ words ......composed of a sheet of ring muscles and five bands of longitudinal muscles. In most species the dermis makes up by far the biggest...structure determination of peptides Body walls, including longitudinal muscles, from a 5-kg sample of S. japonicus were cut into small...

The Accommodative process

Ophthalmology Times;  March 1, 1999 ;     312 words ......is far more complex. The ciliary muscle is composed of three anatomically distinct muscles: the circular, radial, and longitudinal muscles." The three components of the ciliary muscle act in concert to increase tension in the equatorial zonules while decreasing...

Evolution of proboscis musculature in Lepidoptera

European Journal of Entomology;  January 1, 2004 ;     700+ words ......proximal region of the galea. Two muscle units form the basal galeal musculature of the joint region and one to three longitudinal muscles extend into the galea lumen. Multiple intrinsic galeal muscles, of which both the origin and attachment sites are markedly...

Branchial musculature of a venerid clam: pharmacology, distribution, and...

The Biological Bulletin;  February 1, 2003 ;     700+ words ......2001) and many other bivalve gills. In addition to these longitudinal muscles, called horizontal muscles by Atkins (1943) and others...Indeed, neurons have been reported in association with the longitudinal muscles in a unionid mussel, Ligumia subrostrata (Dietz et al...

Illaenidae (Trilobita): Morphology of thorax, classification, and mode of...

Journal of Paleontology;  September 1, 1997 ;     700+ words ......have been flexed unusually strongly concavely dorsally, as well as to enroll. The musculature suggested omits dorsal longitudinal muscles. It is argued that many illaenids may have been vagrant benthos, particularly adapted for negotiating over irregular...

Demonstration of primary and secondary muscle fiber architecture of the...

Biophysical Journal;  February 1, 2001 ;     700+ words ......forcibly, and so to act in opposition to the ensheathing longitudinal muscles of the tongue. METHODS Specimens Magnetic resonance imaging...Identified muscles include the superior and inferior longitudinal muscles (blue), the vertical muscle (green), the transverse muscle...

Maintaining the Line of Defense: Regeneration of Cuvierian Tubules in the...

The Biological Bulletin;  February 1, 2000 ;     700+ words ......perpendicularly to the tubule long axis) and a thick inner layer (where collagen fibers are arranged in helixes parallel to the tubular long axis). Nerve processes are associated with the longitudinal muscles; they also occur between the spirally ar

Walking Versus Breathing: Mechanical Differentiation of Sea Urchin Podia...

The Biological Bulletin;  February 1, 2000 ;     700+ words ......Contraction of the ampulla forces coelomic fluid into the podium, and thus extends it. Conversely, contraction of the longitudinal muscles shortens the podium and forces coelomic fluid back into the ampulla. All of the podia on S. droebachiensis share these...

Making waves

Natural History;  July 1, 1997 ;     700+ words ......every segment has taken a tiny step. The telescoping movements result from the phased activity of the dorsal and ventral longitudinal muscles of each segment, while the prolegs are drawn in by specialized retractor muscles. The transmission of the wave along...

Characterization of nicotinic cholinergic receptors

Indian Journal of Pharmacology;  March 1, 2004 ;     700+ words ......The esophagus was carefully removed. After longitudinal incision, the mucosal tissue was dissected gently, leaving the longitudinal muscles intact. A strip of the upper 2/3rd of the esophageal muscle was mounted under 0.2 g tension in an organ bath filled with...

Adult Myogenesis in Drosophila melanogaster Can Proceed Independently of...

Genetics;  August 1, 2005 ;     700+ words ......contains large fibrillar muscles termed the indirect flight muscles (IFMs) consisting of two muscle groups termed the dorsal longitudinal muscles (DLMs) and dorsoventral muscles (DVMs), which provide the power for flight (ViGOREAUX 2001). The thorax also contains...

Muscle and nerve terminal fine structure of a primitive crustacean, the...

The Biological Bulletin;  August 1, 1994 ;     700+ words ......the muscles in the abdomen is much simpler than that of the thorax, consisting of paired sheaths of dorsal and ventral longitudinal muscles that line the exoskeleton and insert upon it at the anterior end of each segment (Hessler, 1964). Materials and Methods...