منابع مشابه
The extensor tibiae muscle of the stick insect: biomechanical properties of an insect walking leg muscle.
We investigated the properties of the extensor tibiae muscle of the stick insect (Carausius morosus) middle leg. Muscle geometry of the middle leg was compared to that of the front and hind legs and to the flexor tibiae, respectively. The mean length of the extensor tibiae fibres is 1.41+/-0.23 mm and flexor fibres are 2.11+/-0.30 mm long. The change of fibre length with joint angle was measure...
متن کاملMuscle membrane potential and insect chill coma.
Chill-susceptible insects enter a reversible paralytic state, termed chill coma, at mild low temperatures. Chill coma is caused by neuromuscular impairment, allegedly triggered by cold-induced depolarization of muscle resting membrane potential (Vm). We used five Drosophila species that vary in cold tolerance (chill coma temperature spanning ∼11°C) and repeatedly measured muscle Vm during a dow...
متن کاملThe Structure of Insect Fibrillar Flight Muscle
The fine structure of fibrillar flight muscle of the mature adult beetle Tenebrio molitor is described. Although the very high frequency of contraction of fibrillar muscle has previously been in part accounted for as the result of mechanical specialization of the wing-bearing segment rather than of a correspondingly high rate of motor impulse supply, the problem of the nature of the pathway by ...
متن کاملDephosphorylation of nucleotides by insect flight muscle.
Recent studies have demonstrated that nucleotide triphosphates, other than ATP,’ function in biological systems in a manner analogous to that of ATP. These purine and pyrimidine ribotides are now, known to serve as coenzymes in the biosynthesis and interconversion of hexose phosphates (l-3)) in the formation of phospholipides (4)) and as phosphate donors or acceptors in carboxylation reactions ...
متن کاملPower and efficiency of insect flight muscle.
The efficiency and mechanical power output of insect flight muscle have been estimated from a study of hovering flight. The maximum power output, calculated from the muscle properties, is adequate for the aerodynamic power requirements. However, the power output is insufficient to oscillate the wing mass as well unless there is good elastic storage of the inertial energy, and this is consistent...
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ژورنال
عنوان ژورنال: Nature
سال: 1975
ISSN: 0028-0836,1476-4687
DOI: 10.1038/257831c0