scholarly journals To the morphology of the terminal nervous apparatus in the muscles of voluntary movement

2020 ◽  
Vol VII (1) ◽  
pp. 52-58
Author(s):  
D. Polumordvinov
Keyword(s):  
Connective Tissue ◽  
Voluntary Movement ◽  
Pain Sensitivity ◽  
Sensory Nerve ◽  
Nerve Endings ◽  
Mechanical Impact ◽  
Nervous Apparatus ◽  
Sensory Nerve Endings

According to the views prevailing at the present time, the muscles of voluntary movement do not have independent sensitive devices, and all the manifestations of muscle sensitivity, whether this latter is expressed in the form of pain sensitivity, or in the form of muscular feeling, are explained by the presence of tendon sensory nerve endings, internum , - in a word, in connective tissue and connective tissue formations, exposed to mechanical impact from the contracting muscles.

The termination of the afferent nerve fibre in the muscle spindle of the frog

1961 ◽  
Vol 243 (703) ◽  
pp. 221-240 ◽  
Keyword(s):  
Connective Tissue ◽  
Muscle Spindle ◽  
Sensory Nerve ◽  
Nerve Endings ◽  
Muscle Fibres ◽  
Intrafusal Muscle ◽  
Sensory Nerve Endings ◽  
Intrafusal Fibres ◽  
Reticular Zone ◽  
Sensory Endings

1. The sensory nerve contacts in the muscle spindle of the frog were examined in the electron microscope. 2. The terminal branches of the sensory axon form long beaded chains, i.e. bulbous expansions up to 2 to 3 ix thick connected in series by thin cylinders of as little as 0.15 ju. diameter. Many nerve bulbs are seated in cup-like depressions of the intrafusal muscle fibres forming close contact with them. There is a residual gap between nerve and muscle surfaces of about 150 Å, but the gap is bridged here and there by fine filaments or processes of one cell closely approaching or touching the other. 3. The region of sensory contacts along the intrafusal fibres extends over several hundred microns and is divided into two morphologically distinct types of zones: ( a ) two ‘compact’ zones at either end, each about 300 /u. long, in which the fibre retains approximately the same size and number of myofilaments as in the remote, extracapsular, region; ( b ) a ‘reticular’ zone in the centre, about 100 /rlong, in which the fibre loses some 85 % of its content of filaments and splays out into several fins and branches held together by slender membrane connexions. The interstices between the splayed-out parts are filled with a dense network of fine connective tissue fibrils (about 50 Å thick). A minority of the intrafusal fibres does not show this differentiation in the sensory region and retains most of its myofilaments throughout. 4. Several characteristic differences are described between motor and sensory nerve endings on intrafusal muscle fibres. Among them are ( a ) that the motor terminal forms an ‘epectolemmal’, the sensory ending a ‘ hypectolemmaP contact (referring to the external basement membrane of the cells as the ‘ectolemma’) ; ( b ) the motor ending remains invested by a covering Schwann cell layer, while the sensory endings are not closely associated with satellite cells; ( c ) the cytoplasm of motor endings is characterized by an accumulation of 500 Å vesicles near the synaptic surface, that of sensory endings by an accumulation of small mitochondria. 5. A structure of unusual periodicity (a longitudinal ‘micro-ladder with rungs about 1600 Å apart) was observed in the interior of intrafusal muscle fibres, located generally in the neighbourhood of sensory nerve contacts. 6. The functional significance of some of the observed morphological features is discussed. It is suggested that mechanical stimulation and depolarization of the sensory nerve endings occurs at the points of adhesion between the intrafusal muscle fibre and the terminal nerve bulbs. The differentiation between ‘dynamic’ and ‘static’ components of the sensory stretch response may arise from different visco-elastic properties of the ‘compact’ and ‘reticular’ zones. Motor activation of the intrafusal muscle fibres would lead to intense stimulation of the sensory endings mainly within the ‘reticular’ zone. This zone is protected against overstretching by a feltwork of connective tissue fibrils.

Ultrastructure of sensory nerve endings in monkey (Macaca fascicularis) knee joint capsule

1984 ◽  
Vol 2 (2) ◽  
pp. 169-176 ◽  
Author(s):  
Zdenek Halata ◽  
Marie A. Badalamente ◽  
Roger Dee ◽  
Michael Propper
Keyword(s):  
Knee Joint ◽  
Macaca Fascicularis ◽  
Sensory Nerve ◽  
Joint Capsule ◽  
Nerve Endings ◽  
Sensory Nerve Endings

59 Immunohistochemical study of sensory nerve endings in the coracoacromial arch

1998 ◽  
Vol 7 (3) ◽  
pp. 338
Author(s):  
M Tamai ◽  
M Kurokawa ◽  
S Okajima ◽  
N Takenaka ◽  
Y Takubo ◽  
...  
Keyword(s):  
Immunohistochemical Study ◽  
Sensory Nerve ◽  
Nerve Endings ◽  
Sensory Nerve Endings ◽  
Coracoacromial Arch

scholarly journals A comparative analysis of the encapsulated end-organs of mammalian skeletal muscles and of their sensory nerve endings

2009 ◽  
Vol 214 (6) ◽  
pp. 859-887 ◽  
Author(s):  
R. W. Banks ◽  
M. Hulliger ◽  
H. H. Saed ◽  
M. J. Stacey
Keyword(s):  
Comparative Analysis ◽  
Skeletal Muscles ◽  
Sensory Nerve ◽  
Nerve Endings ◽  
Sensory Nerve Endings

Immunohistochemical distribution of proteins involved in glutamate release in subepithelial sensory nerve endings of rat epiglottis

2021 ◽  
Author(s):  
Yoshio Yamamoto ◽  
Hisae Moriai ◽  
Takuya Yokoyama ◽  
Nobuaki Nakamuta
Keyword(s):  
Glutamate Release ◽  
Sensory Nerve ◽  
Nerve Endings ◽  
Sensory Nerve Endings

Sensory nerve endings arising from single spinal afferent neurons that innervate both circular muscle and myenteric ganglia in mouse colon: colon-brain axis

2020 ◽  
Vol 381 (1) ◽  
pp. 25-34 ◽  
Author(s):  
Nick J. Spencer ◽  
Melinda A. Kyloh ◽  
Lee Travis ◽  
Kelsi N. Dodds
Keyword(s):  
Sensory Nerve ◽  
Circular Muscle ◽  
Nerve Endings ◽  
Afferent Neurons ◽  
Mouse Colon ◽  
Sensory Nerve Endings ◽  
Myenteric Ganglia

scholarly journals Degeneration of proprioceptive sensory nerve endings in mice harboring amyotrophic lateral sclerosis-causing mutations

2015 ◽  
Vol 523 (17) ◽  
pp. Spc1-Spc1 ◽  
Author(s):  
Sydney K. Vaughan ◽  
Zachary Kemp ◽  
Theo Hatzipetros ◽  
Fernando Vieira ◽  
Gregorio Valdez
Keyword(s):  
Amyotrophic Lateral Sclerosis ◽  
Sensory Nerve ◽  
Nerve Endings ◽  
Sensory Nerve Endings ◽  
Lateral Sclerosis
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