Question:

Stimulation of a muscle fiber by a motor neuron occurs at

Updated On: Aug 3, 2024
  • the neuromuscular junction
  • the transverse tubules
  • the myofibril
  • the sacroplasmic reticulum.
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The Correct Option is A

Solution and Explanation

A neuron that transmits a stimulus to muscle tissue is called motor neuron. A motor unit consists of a single motor neuron (nerve cell) and the muscle fibres it innervates. The portion of the muscle plasma membrane (sarcolemma) that lies beneath the nerve endings (axon
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Concepts Used:

Locomotion and Movement

Locomotion

The movement of a creature from one place to another is known as locomotion. During the process, there is the action of appendages such as wings, limbs, and flagella. In some animals, like fish, whales, and sharks, locomotion upshots from a wave-like series of muscle contractions. Locomotion helps an organism in finding their food, avoid harsh weather conditions, escape from their predators, etc.

Some examples of locomotion are walking, running, swimming, etc. Movement, on the other hand, refers to any type of motion that need not be localized.

Read More: Locomotion and Movement

Movement 

Movement is generally described as a state of changing the position from rest to motion or vice-versa. Movement can be both voluntary movement and involuntary movement. Movement helps an organism perform essential functions, such as pumping blood to the different parts of the body, etc.

Read More: Difference between Locomotion and Movement