10 Questions
What is the role of Golgi tendon organs in skeletal muscles?
Sensory receptors providing data to the central nervous system
What occurs in skeletal muscles when mitochondrial activity stops after death?
Rigor mortis due to stable actin-myosin crossbridges
Where do myelinated motor nerves branch out within skeletal muscles?
Perimysium
What is the structure where the terminal branches of motor axons make contact with muscle fibers?
Neuromuscular junction
What covers the terminal portion of the axon at the neuromuscular junction?
(Schwann) cell with its external lamina
What type of neurons originate in the spinal cord or brainstem to innervate skeletal muscle fibers?
Motor neurons
Where do unmyelinated terminal twigs from motor nerves form synapses with individual muscle fibers?
Endomysium
What do proprioceptors in striated muscles serve as?
Sensory receptors providing data to CNS
In rigor mortis, what accounts for the rigidity of skeletal muscles?
Stable actin-myosin crossbridges in the absence of ATP
What do motor axons terminate on at the neuromuscular junction?
Motor end plate on muscle fiber
Test your knowledge on muscle spindles and the somatic sensory system that provides information about muscle stretching and tension. Learn about the structure and function of muscle spindles within skeletal muscles and their role in proprioception.
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