Influences of the ncc axons on electrical activity in the glandular lobe of the corpus cardiacum of Locusta migratoria

1986 ◽  
Vol 84 (2) ◽  
pp. 319-324 ◽  
Author(s):  
R.E.B. Bloemen ◽  
A.M.Th. Beenakkers ◽  
T.A. de Vlieger
Keyword(s):  
Electrical Activity ◽  
Locusta Migratoria ◽  
Corpus Cardiacum

The Control of Changes in Peripheral Sensilla Associated with Feeding in Locusta Migratoria (L.)

1972 ◽  
Vol 57 (3) ◽  
pp. 755-763
Author(s):  
E. A. BERNAYS ◽  
R. F. CHAPMAN
Keyword(s):  
Normal Level ◽  
Electrical Resistance ◽  
Locusta Migratoria ◽  
Corpus Cardiacum ◽  
Corpora Cardiaca ◽  
Diuretic Hormone ◽  
Stretch Receptors ◽  
The Brain ◽  
Maxillary Palps ◽  
Stimulation Of

1. The electrical resistance across the tips of the maxillary palps is not affected by stimulation of the palps, but increases to the normal level found after feeding as a result of distension of the foregut with agar or injection of corpus cardiacum homogenates into the haemolymph. 2. No increase in resistance occurs if the posterior pharyngeal nerves or the frontal connectives are cut. 3. It is inferred that distension of the foregut stimulates stretch receptors which, acting via the posterior pharyngeal nerves, the frontal connectives and the brain, cause the release of hormone from the storage lobes of the corpora cardiaca. This hormone acts on the terminal sensilla of the palps, causing them to close and so increasing the resistance across the palps. 4. Release of the diuretic hormone is controlled via the same pathway.

Peptide profiling of a single Locusta migratoria corpus cardiacum by nano-LC tandem mass spectrometry

Peptides ◽  
2003 ◽  
Vol 24 (10) ◽  
pp. 1475-1485 ◽  
Author(s):  
G. Baggerman ◽  
E. Clynen ◽  
J. Huybrechts ◽  
P. Verleyen ◽  
S. Clerens ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Tandem Mass Spectrometry ◽  
Locusta Migratoria ◽  
Tandem Mass ◽  
Corpus Cardiacum

Innervation of the ventral diaphragm of the locust (Locusta migratoria)

1977 ◽  
Vol 69 (1) ◽  
pp. 23-32
Author(s):  
M. Peters
Keyword(s):  
Electrical Stimulation ◽  
Electrical Properties ◽  
Electrical Activity ◽  
Neuromuscular Junctions ◽  
Motor Nerve ◽  
Locusta Migratoria ◽  
Posterior Segment ◽  
Muscle Fibres ◽  
Inspiratory Muscles ◽  
Motor Neurones

1. Innervation and some electrical properties of the locust ventral diaphragm were investigated with electrophysiological and histological methods. 2. Muscle fibres are coupled electrically. Electrical stimulation evokes a graded active membrane response. 3. Each segment is innervated by four motor neurones as follows. Two motor neurones are situated in each abdominal ganglion. Branches of their axons supply the ventral diaphragm in the respective and the next posterior segment. 4. This pattern of innervation was confirmed by axonal Co and Ni staining of the motor nerve endings. 5. Neuromuscular junctions are excitatory. EPSPs show summation but no facilitation. 6. Spontaneous electrical activity of the diaphragm is to a certain degree coupled to activity of the main inspiratory muscles.

The Structure of the Corpus Cardiacum of Locusta Migratoria

1954 ◽  
Vol s3-95 (30) ◽  
pp. 245-250
Author(s):  
K. K. NAYAR
Keyword(s):  
Phase Contrast ◽  
Locusta Migratoria ◽  
Phase Contrast Microscopy ◽  
Living Tissue ◽  
Corpus Cardiacum ◽  
Cytoplasmic Inclusions ◽  
Contrast Microscopy

The corpus cardiacum of Locusta consists of a syncytium containing nuclei of two sizes. The most obvious cytoplasmic inclusions are spheroid bodies, mostly about 0.6µ in diameter, which are easily seen in the living tissue, especially by phase-contrast microscopy. They do not appear in routine microscopical preparations, but are blackened by the classical ‘Golgi’ techniques. They give positive reactions for phospholipines. The cytoplasm also contains very numerous minute granules, which appear to be mitochondria.

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