muscle tone
You call it as cardiac muscles. The muscle fibers contract rhythmically. The muscle fibers are attached to each other end to end. This facilitates the conduction of the impulse. The muscle fiber can be stimulated to give you contraction of the the same.
Our bodies are made up of different types of muscle fibers, all of which rely on different energy systems. Slow twitch fibers, as the name suggests, contract more slowly than fast twitch muscle fibers and they can contract for a longer period of time. We often call these 'endurance' muscles because they're great for aerobic activities that require endurance like running, cycling and swimming. In general, many of us will have about 50% slow twitch fibers and 50% fast twitch fibers, although it will differ between individuals. Successful long-distance runners will often have more slow twitch fibers while sprinters or bodybuilders will often have more fast twitch fibers. Strength training in different rep ranges (from 4-16) will allow you to work different muscle fibers and energy systems in your body.
Our bodies are made up of different types of muscle fibers, all of which rely on different energy systems. Slow twitch fibers, as the name suggests, contract more slowly than fast twitch muscle fibers and they can contract for a longer period of time. We often call these 'endurance' muscles because they're great for aerobic activities that require endurance like running, cycling and swimming. In general, many of us will have about 50% slow twitch fibers and 50% fast twitch fibers, although it will differ between individuals. Successful long-distance runners will often have more slow twitch fibers while sprinters or bodybuilders will often have more fast twitch fibers. Strength training in different rep ranges (from 4-16) will allow you to work different muscle fibers and energy systems in your body.
When painting with watercolor, acrylic or oil paints, if using a 'brush' it is called a Paintbrush. A paintbrush is either comprised of natural fibers or synthetic.
darnmna
Each fiber is actually a muscle cell. They are found in bundles that form what we call muscles. These are also called skeletal muscles because when they contract and get shorter, the bones that they are attached to, move. And the bones are part of the skeletal system.
strength training helps get more muscle by recruiting more muscle fibers depending on the amount of weight you lift .as you add weight you call upon more motor units to innervate new muscle fibers.these muscles fill with blood that is hypertrophy if not used then atrophy will happen.shrinking of the muscle.
heart muscle
That is very good question! You do not have any thing like partially contracted muscle fibres, most probably. What you have got is partially contracted muscles. The muscle is more or less contracted as per the number of muscle fibres that are contracted at any given time.
stria
Very rapid contractions or twitching of small muscle fibers in the heart often need to be stopped. A mechanism that does this is called a defibrillator. The act itself is call a defibrillation. Many times the top chambers of the heart go into fibrillation and are not as severe as the ones that occur in the bottom chambers called the ventricles. These must be stopped as quickly as possible.
The muscle that cover the heart is myocardium