Preliminary report on the digestive enzymes present in the digestive gland ofPerna viridis

1990 ◽  
Vol 106 (3) ◽  
pp. 403-407 ◽  
Author(s):  
L. H. Teo ◽  
U. Sabapathy
Keyword(s):  
Digestive Gland ◽  
Digestive Enzymes ◽  
Preliminary Report

A PRELIMINARY REPORT ON DIGESTIVE ENZYMES OF HERMODICE CARUNCULATA

1963 ◽  
Vol 41 (2) ◽  
pp. 159-164 ◽  
Author(s):  
Joan Rattenbury Marsden
Keyword(s):  
Olive Oil ◽  
Digestive Tract ◽  
Digestive Enzymes ◽  
Preliminary Report ◽  
Body Wall ◽  
Posterior Intestine ◽  
Digestive Function ◽  
Hermodice Carunculata ◽  
Fish Flesh ◽  
Anterior Intestine

Extracts of the various regions of the digestive tract of Hermodice carunculata (Amphinomidae;Polychaeta) were tested for the digestion of olive oil, gelatin, fish flesh, and starch and for the production of glucose. The buccal region was found to lack amylytic enzymes. The pharynx, oesophagus, and anterior intestine produce all three categories of enzyme, lipase, protease, and amylase. The posterior intestine lacks a lipase. The probable digestive function of each region of the digestive tract is discussed as well as the significance of the dark tracts on the mid-ventral body wall and mid-dorsal pharyngeal lining.

Histological Investigation of the Digestive System and SEM Study of Radula in Fusinus nicobaricus (Gastropoda: Fasciolariidae)

2019 ◽  
Author(s):  
P Subavathy
Keyword(s):  
Digestive Gland ◽  
Digestive Enzymes ◽  
Digestive System ◽  
Histological Investigation ◽  
Histological Studies ◽  
Buccal Mass ◽  
Sem Study ◽  
Gland Tissue ◽  
Thin Walled ◽  
Carbohydrate Metabolites

In the present study, histological studies of the digestive system and SEM study of radula of Fusinus nicobaricus was evaluated. The digestive system contains proboscis, oesophagus, stomach, hepatopancreas, intestine, rectum and anus. The digestive tract of Fusinus nicobaricus encloses a buccal mass at the anterior region which contains a chitinous radula. The oesophagus leaved the buccal mass dorsally and passed the food into an extensible stomach. A pair of salivary gland lied with mid-oesophagus region. Digestive gland secreted digestive enzymes into the lumen of the stomach into mid region. Intestine was thin walled, usually long and possess loop through the digestive gland tissue and leaves as short rectum. Hepatopancreas was also implicated in storage and excretion of inorganic reserves, lipids and carbohydrate metabolites. Radula, a specific character and part of the appendices of digestive system of majority of molluscs. It was observed that the type of radula in F.n is rachiglossate with radular formula of 1+R+1.

Progress report on 21-cm observations at low latitude between longitudes (l 11) 0° and 66°

1967 ◽  
Vol 31 ◽  
pp. 177-179
Author(s):  
W. W. Shane
Keyword(s):  
Preliminary Report ◽  
Progress Report ◽  
Galactic Centre ◽  
Low Latitude ◽  
The Third ◽  
Introductory Lecture ◽  
Centre Region

In the course of several 21-cm observing programmes being carried out by the Leiden Observatory with the 25-meter telescope at Dwingeloo, a fairly complete, though inhomogeneous, survey of the regionl11= 0° to 66° at low galactic latitudes is becoming available. The essential data on this survey are presented in Table 1. Oort (1967) has given a preliminary report on the first and third investigations. The third is discussed briefly by Kerr in his introductory lecture on the galactic centre region (Paper 42). Burton (1966) has published provisional results of the fifth investigation, and I have discussed the sixth in Paper 19. All of the observations listed in the table have been completed, but we plan to extend investigation 3 to a much finer grid of positions.

Preliminary Report of a Comparative Study of Seminiferous Tubular Epithelium from Rats Flown on Cosmos 1887 and SL3

1988 ◽  
Vol 46 ◽  
pp. 276-277
Author(s):  
Walter J. Sapp ◽  
D.E. Philpott ◽  
C.S. Williams ◽  
K. Kato ◽  
J. Stevenson ◽  
...  
Keyword(s):  
Space Flight ◽  
Physiological Response ◽  
Preliminary Report ◽  
Complete Recovery ◽  
Environmental Constraints ◽  
Tubular Epithelium ◽  
Testicular Weight ◽  
Testicular Morphology ◽  
Normal Offspring ◽  
Rats And Mice

Space flight, with its unique environmental constraints such as immobilization, decreased and increased pressures, and radiation, is known to affect testicular morphology and spermatogenesis. Selye, summarized the manifestations of physiological response to nonspecific stress and he pointed out that atrophy of the gonads always occurred. Reports of data collected from two dogs flown in space for 22 days (Cosmos 110) indicate that there was an increase of 30 to 70% atypical spermatozoa when compared to ground based controls. Seventy-five days after the flight the abnormalities had decreased to the high normal value of 30% and mating of these dogs after this period produced normal offspring, suggesting complete recovery. Effects of immobilization and increased gravity were investigated by spinning rats and mice at 2x g for 8-9 weeks. A decrease in testicular weight was noted in spun animals when compared to controls. Immobilization has been show to cause arrest of spermatogenesis in Macaca meminstrins.

Electron Probe Analysis of Vertebrate Smooth Muscle: Distribution of Ca and Ci

1976 ◽  
Vol 34 ◽  
pp. 334-335 ◽  
Author(s):  
Avril V. Somlyo ◽  
H. Shuman ◽  
A.P. Somlyo
Keyword(s):  
Smooth Muscle ◽  
Electron Probe ◽  
Preliminary Report ◽  
Cell Damage ◽  
Electron Probe Analysis ◽  
Perinuclear Space ◽  
Probe Analysis ◽  
High K ◽  
Low K ◽  
Initial Results

This is a preliminary report of electron probe analysis of rabbit portal-anterior mesenteric vein (PAMV) smooth muscle cryosectioned without fixation or cryoprotection. The instrumentation and method of electron probe quantitation used (1) and our initial results with cardiac (2) and skeletal (3) muscle have been presented elsewhere.In preparations depolarized with high K (K2SO4) solution, significant calcium peaks were detected over the sarcoplasmic reticulum (Fig 1 and 2) and the continuous perinuclear space. In some of the fibers there were also significant (up to 200 mM/kg dry wt) calcium peaks over the mitochondria. However, in smooth muscle that was not depolarized, high mitochondrial Ca was found in fibers that also contained elevated Na and low K (Fig 3). Therefore, the possibility that these Ca-loaded mitochondria are indicative of cell damage remains to be ruled out.

The Successful Stuttering Management Program: A Preliminary Report on Outcomes

2010 ◽  
Vol 20 (1) ◽  
pp. 20-25 ◽  
Author(s):  
Jim Tsiamtsiouris ◽  
Kim Krieger
Keyword(s):  
Preliminary Report ◽  
Speech Rate ◽  
Management Program ◽  
Intensive Program ◽  
Adults Who Stutter

Abstract The purpose of this study was to test the hypothesis that adults who stutter will exhibit significant improvements after attending a residential, 3-week intensive program that focuses on avoidance reduction and stuttering modification therapy. Preliminary analyses focused on four measures: (a) SSI-3, (b) speech rate, (c) S-24 Scale, and (d) OASES. Results indicated significant improvements on all of the measures.

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