A motor unit consists of <u>a single motor neuron</u>.
<h3>What is a motor unit?</h3>
Most mature extrafusal skeletal muscle fibers in mammals are innervated by only a single alpha motor neuron. Since there are more muscle fibers by far than motor neurons, individual motor axons branch within muscles to synapse on many different fibers that are typically distributed over a relatively wide area within the muscle, presumably to ensure that the contractile force of the motor unit is spread evenly .
In addition, this arrangement reduces the chance that damage to one or a few alpha motor neurons will significantly alter a muscle's action. Because an action potential generated by a motor neuron normally brings to threshold all of the muscle fibers it contacts, a single alpha motor neuron and its associated muscle fibers together constitute the smallest unit of force that can be activated to produce movement.
Sherrington was the first to recognize this fundamental relationship between an alpha motor neuron and the muscle fibers it innervates, for which he coined the term motor unit.
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Where is the data I need to see the data to answer
Answer:
The monkey is a new world monkey
Explanation:
The New world monkey is the monkeys which are evolved from the old world monkey-like apes and many other genera.
These monkeys have evolved from the old world Simian monkeys in South America about 40 million years ago and adapted to survive in the tropical areas of South America and the regions of Mexico.
This monkey can be characterized by their long-tails called prehensile tails, the use of their hands and feet to walk on the trees.
Since the characters of the monkeys provided in the question show similar characteristics to these, therefore, are considered the New World Monkeys.
<span>Those organisms that are visible fall under the category or domain of eukarya. These are the objects that are multicellular, have nuclei, and membrane-bound organelles inside each cell. This is the grouping that contains plants, protists, animals, and humans.</span>
C because photosynthesis is light dependent
