Fertilization. Egg and sperm cells have just 23 chromosomes each. That's half as many chromosomes as regular cells. Through the process of fertilization, egg and sperm join to make a cell with 46 chromosomes (23 pairs), called a zygote.
From smallest to largest, the order of the muscle tissue structures are Actin < Myosin < Thin filament < Thin filament < Filament < Sarcomere < Myofibril < Fiber < Fascicles < Muscle .
Muscle tissues is composed of cells which have the unique potential to shorten or settlement that allows you to produce movement of the frame parts. The tissue is particularly mobile and is properly provided with blood vessels.
Motion is the principle function of muscular tissue. they have got the potential to contract and that is what brings approximately the motion of body elements. they also help to preserve frame posture and role. Muscle fibers are placed in walls of hole visceral organs.
Muscle tissues is shaped for the duration of embryonic improvement, in a method called myogenesis. muscular tissues consists of unique contractile proteins called actin and myosin which agreement and loosen up to cause motion. among many other muscle proteins gift are two regulatory proteins, troponin and tropomyosin.
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Change in allele frequencies and microevolution
When an external stimulus crosses the threshold, a muscle fibre will respond.
<h3>The level of the threshold</h3>
- For the identification of the electrical activity carried out by the active muscles, the threshold level is a crucial consideration.
- A portion of the electrical activity carried out by the target muscles may be excluded if the chosen threshold level is higher than the overall activity.
<h3>What is the stimulus threshold for muscle contraction?</h3>
- A certain stimulus magnitude is necessary for muscle contraction.
- The threshold stimulus is the smallest amount of force needed for a stimulus to cause a muscle to contract in response.
- If the stimulus intensity is less than this threshold value, there is no response.
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Answer:
isotope of the element hydrogen called protium. Protium,
Explanation:
contains a single proton and a single electron, is the simplest atom.
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