Microanatomy of the lung parenchyma of a tegu lizard Tupinambis nigropunctatus.

abstract：:The king-of-the-salmon, Trachipterus altivelis (Lampriformes), has an unusual set of oral jaws which allow it the ability to protrude the entire upper jaw, containing the premaxilla and the maxilla bones, to extreme distances. Here, we provide a short description of the cranial anatomy and mechanism of jaw protrusion ...

journal_title：Journal of morphology

authors： Ferry LA,Paig-Tran EW,Summers AP,Liem KF

更新日期：2019-12-01 00:00:00

abstract：:The appearance, cellular distribution, and changes of sugar residues during tooth development in adults of the polyphyodont, Liolaemus gravenhorsti, were investigated by using horseradish-peroxidase-conjugate lectins (lectin-HRP). With Con A (Canavalia ensiformis), the ameloblasts (late bell stage) show granular supra...

journal_title：Journal of morphology

authors： Lemus D,Cabello R,Lemus R,Soto M,Fuenzalida M

更新日期：1994-12-01 00:00:00

abstract：:The paired Y-organs of crustaceans control the molting process. In males of C. antennarius, these glands are opalescent, lobulated, epithelioid structures embedded in brown fatty tissue. Cells in the periphery extend processes to the connective tissue capsule, an arrangement that suggests increased surface area for me...

journal_title：Journal of morphology

authors： Hinsch GW,Spaziani E,Vensel WH

更新日期：1980-02-01 00:00:00

abstract：:A morphological comparison of the spermatozoa of the octopods Bathypolypus bairdii and B. sponsalis has been carried out by electron microscopy. Although the mature spermatozoon of B. bairdii is longer and thinner than that of B. sponsalis, its general ultrastructure is similar except for some minor differences. Their...

journal_title：Journal of morphology

authors： Roura A,Guerra A,González AF,Pascual S

更新日期：2010-02-01 00:00:00

abstract：:The Antarctic snailfish Paraliparis devriesi (Liparididae) occupies an epibenthic habitat at a depth of 500-650 m in the subzero waters of McMurdo Sound, Antarctica. Although lacking a swim bladder, this species is neutrally buoyant through the combined effects of reduced skeletal ossification and expansion of a water...

journal_title：Journal of morphology

authors： Eastman JT,Hikida RS,Devries AL

更新日期：1994-04-01 00:00:00

abstract：:The ultrastructure of a well studied insect chemosensory unit is presented in this report. Two separate lumina are present in this chemosensory unit, the trichogen and sensillar lumina. The fluid within the trichogen lumen exclusively bathes the dendritic terminals, and may be involved with the reception and/or modula...

journal_title：Journal of morphology

authors： Felt BT,Vande Berg JS

更新日期：1976-11-01 00:00:00

abstract：:The plainfin midshipman fish, Porichthys notatus, is a nocturnal marine teleost that uses social acoustic signals for communication during the breeding season. Nesting type I males produce multiharmonic advertisement calls by contracting their swim bladder sonic muscles to attract females for courtship and spawning wh...

journal_title：Journal of morphology

authors： Mohr RA,Whitchurch EA,Anderson RD,Forlano PM,Fay RR,Ketten DR,Cox TC,Sisneros JA

更新日期：2017-11-01 00:00:00

abstract：:The wall of the asymmetrical saclike lungs of the fishes Polypterus and Erpetoichthys consists of several functionally different tissue layers. Their lumen is lined by a surface epithelium composed of (1) highly attenuated cells, termed pneumocytes I; (2) pneumocytes II with lamellar bodies, presumably indicating surf...

journal_title：Journal of morphology

authors： Lechleuthner A,Schumacher U,Negele RD,Welsch U

更新日期：1989-08-01 00:00:00

abstract：:The external surface of the cornea and adjacent epidermis of larvae in representative developmental stages and of adult frogs, Rana pipiens, was studied by scanning electron microscopy. Surface cells are polygonal, usually hexagonal, in outline and covered with microprojections. During larval development prior to meta...

journal_title：Journal of morphology

authors： Kaltenbach JC,Harding CV,Susan S

更新日期：1980-12-01 00:00:00

abstract：:Over the past few decades, geometric morphometric methods have become increasingly popular and powerful tools to describe morphological data while over the same period artificial neural networks have had a similar rise in the classification of specimens to preconceived groups. However, there has been little research i...

journal_title：Journal of morphology

authors： Soda KJ,Slice DE,Naylor GJ

更新日期：2017-01-01 00:00:00

abstract：:We have studied the gill epithelium of Oreochromis niloticus using transmission electron microscopy with the particular interested relationship between cell morphology and osmotic, immunoregulatory, or other non-regulatory functions of the gill. Pavement cells covered the filament epithelium and lamellae of gills, wit...

journal_title：Journal of morphology

authors： Monteiro SM,Oliveira E,Fontaínhas-Fernandes A,Sousa M

更新日期：2010-05-01 00:00:00

abstract：:From the elongated neck of the giraffe to the elaborate train of the peacock, extreme traits can result from natural or sexual selection (or both). The extreme chelicerae of the long-jawed spiders (Tetragnatha) present a puzzle: do these exaggerated chelicerae function as weapons or genitalia? Bristowe first proposed ...

journal_title：Journal of morphology

authors： Danielson-François A,Sullivan HN

更新日期：2020-10-19 00:00:00

abstract：:The morphology of 16 occipital spines of the xenacanthid Orthacanthus from Upper Carboniferous deposits of Robinson (Kansas, USA), Nýran (Czech Republic) and Puertollano (Spain) is described. The nonreplaced spines reveal the growth pattern of the shark. Moreover, the relationship between growth and paleoenvironmental...

journal_title：Journal of morphology

authors： Soler-Gijón R

更新日期：1999-10-01 00:00:00

abstract：:Newly metamorphosed Kenyan reed frogs, Hyperolius viridiflavus ferniquei, are able to regenerate amputated digits. The terminal digital pad is also completely reformed. Differentiation of the regenerating digital pad was studied by scanning electron microscopy. External differentiation of the digital pad began late in...

journal_title：Journal of morphology

authors： Richards CM,Carlson BM,Connelly TG,Rogers SL,Ashcraft E

更新日期：1977-09-01 00:00:00

abstract：:Oogenesis in the silkworm, Bombyx mori, was studied by light and electron microscopy of sections of resin-embedded follicles. The development of the follicles was divided into a series of 12 distinctive stages based on various morphological criteria. Structural changes in the oocyte, nurse cells, and follicle cells ar...

journal_title：Journal of morphology

authors： Yamauchi H,Yoshitake N

更新日期：1984-01-01 00:00:00

abstract：:An ultrastructural study was carried out on the secretory activity of the ectal mandibular gland in the wasp Polistes dominulus (foundress and worker females as well as males). Secretory activity in foundresses proceeds slowly during hibernation and early spring, becoming prominent in late spring and then falling shar...

journal_title：Journal of morphology

authors： Fortunato A,Turillazzi S,Delfino G

更新日期：2000-04-01 00:00:00

abstract：:Cetacean middle ears are unique among mammals in that they have an elongated tympanic membrane, a greatly reduced manubrium mallei, and an incudal crus longum that is shorter than the crus breve. Elongation of the tympanic membrane and reduction of the manubrium is thought to be related to an evolutionary rotation of ...

journal_title：Journal of morphology

authors： Kinkel MD,Thewissen JG,Oelschläger HA

更新日期：2001-08-01 00:00:00

abstract：:At mating, female insects generally receive and store sperm in specific organs of their reproductive tract called spermathecae. Some Heteroptera, such as Cimicomorpha, lack a true spermatheca; some have receptacles of novel formation where sperm cells can transit or be stored. In Tingidae, there are two sac-like diver...

journal_title：Journal of morphology

authors： Marchini D,Del Bene G,Dallai R

更新日期：2010-04-01 00:00:00

abstract：:The morphology and probable evolution of the depressor muscles of the lower jaw, innervated by the seventh cranial nerve (VII;M. Ceratomandibularis, M. Depressor Mandibulae), in larval, neotenic, and metamorphosed Urodela were investigated. Observations on innervation and skeletal connections of the muscles were inclu...

journal_title：Journal of morphology

authors： Bauer WJ

更新日期：1997-07-01 00:00:00

abstract：:The cloacal complex of Crocodylus porosus is composed of three chambers (proctodaeum, urodaeum, and coprodaeum) separated by tight, muscular sphincters. The proctodaeum is proximal to the cloacal vent and houses the genitalia. The urodaeum is the largest chamber, is capable of storing large quantities of urine, and is...

journal_title：Journal of morphology

authors： Kuchel LJ,Franklin CE

更新日期：2000-08-01 00:00:00

abstract：:The female reproductive system of Sphaerodema rusticum consists of a pair of ovaries, two lateral oviducts, a median common oviduct, and a median spermatheca. Accessory glands are absent. Each ovary has five free ovarioles branching from the oviduct. Each ovariole consists of a terminal filament, germarium, vitellariu...

journal_title：Journal of morphology

authors： Jawale SM,Ranade DR

更新日期：1990-08-01 00:00:00

abstract：:The cytoarchitecture and neuronal morphology of the torus semicircularis in the red-eared turtle, Chrysemys scripta elegans, were examined in Nissl-stained and Golgi-impregnated material. The torus semicircularis begins in the caudodorsal mesencephalon and extends rostrally and laterally to end ventrally to the tectal...

journal_title：Journal of morphology

authors： Browner RH,Kennedy MC,Facelle T

更新日期：1981-08-01 00:00:00

abstract：:The larval development of "conchostracans" has received only scattered attention. Here I present the results of a study on the larval (naupliar) development and the metamorphosis of Lynceus brachyurus, a member of the bivalved branchiopod order the Laevicaudata. Lynceus brachyurus is the only species of the "Conchostr...

journal_title：Journal of morphology

authors： Olesen J

更新日期：2005-05-01 00:00:00

abstract：:Large pinnae are characteristic of the Leporids, and the pinna is known to have a thermoregulatory role. Another role has been hypothesized for the pinna of Lepus spp., as a part of a suspensory system for the greater portion of the head, absorbing shock that might otherwise interfere with vision during high-speed loc...

journal_title：Journal of morphology

authors： Stott P,Jennings N,Harris S

更新日期：2010-06-01 00:00:00

abstract：:Timed-sequence studies have shown that reticulate scales on the ventral footpads of birds do not undergo "epidermal placode" formation during their morphogenesis, but arise as symmetrical evaluations similar to the scales of snakes and lizards. Unlike the scutellate scales on the dorsal surface of the foot, in which t...

journal_title：Journal of morphology

authors： Sawyer RH,Craig KF

更新日期：1977-10-01 00:00:00

abstract：:Three regions of the byssus of the marine mussel Mytilus edulis L. are distinct in structural organization at the macroscopic and microscopic level and in amino acid composition. The threads that emanate from the stem at the base of the foot are divided into two regions. The proximal, elastic region has a crimped, den...

journal_title：Journal of morphology

authors： Benedict CV,Waite JH

更新日期：1986-09-01 00:00:00

abstract：:Early embryonic mitosis of the silkworm, Bombyx mori, was morphologically studied in the normal eggs and in the eggs treated by low temperature (-10°C). The first embryonic mitosis is observed in the eggs at 120 to 150 minutes after deposition at 26°C. After egg and sperm pronuclei unite, a spindle is formed in each o...

journal_title：Journal of morphology

authors： Kawamura N

更新日期：1978-10-01 00:00:00

abstract：:The laterophysic connection (LC) is an association between bilaterally paired, anterior swim bladder extensions (horns) and medial openings in the supracleithral lateral line canals that diagnoses butterflyfishes in the genus Chaetodon. It has been hypothesized that the LC makes the lateral line system sensitive to so...

journal_title：Journal of morphology

authors： Webb JF,Smith WL,Ketten DR

更新日期：2006-11-01 00:00:00

abstract：:Homology is resemblance caused by a continuity of information. In biology it is a unified developmental phenomenon. Homologies among and within individuals intergrade in several ways, so historical homology cannot be separated sharply from repetitive homology. Nevertheless, the consequences of historical and repetitiv...

journal_title：Journal of morphology

authors： Van Valen LM

更新日期：1982-09-01 00:00:00

abstract：:Larval and juvenile air breathing fish may experience nocturnal and/or seasonal aquatic hypoxia. Yet, whether hypoxia induces respiratory developmental plasticity in larval air breathing fish is uncertain. This study predicted that larvae of two closely related anabantid fish-the facultative air breather the Siamese f...

journal_title：Journal of morphology

authors： Mendez-Sanchez JF,Burggren WW

更新日期：2019-02-01 00:00:00