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What describes the events of contraction in excitation-contraction coupling?
cross bridge formation "Excitation-contraction coupling" connects muscle fiber excitation to the muscle fiber contraction (cross bridge formation). During contraction, myosin heads form cross bridges many times-with each cross bridge generating a small amount of tension in the muscle fiber.
Does fiber give you energy?
No it doesn't. Have any calories so it can't make energy
What are thin filament made of?
Assuming that you're talking about the thin filament of a muscle fiber then its made of actin, troponin, tropomyosin, and a binding site for a calcium ion.
Can we say that the heavier you are the more powerful you are.?
If by power, one means strength, then greater weight does not necessarily indicate greater strength. Strength in humans is determined by the amount and kind of muscle fiber, with type II muscle fibers providing the greatest short-term bursts of strength. It would be more accurate to say that the more muscle you have, the more powerful you are, since many large people are large due to a high percentage of body fat and not lean muscle.
Why do you say that the sun is the ultimate source of energy?
provides light energy to the firsts of almost all food chains (excludes vent communities) which are the plants for photosynthesisThe sun provides three things for life to occur on earth.1. Heat. With out the heat, no life could survive.2. Energy. Plants can combine the energy in the sun with water and minerals in the soil to produce their own food. All other life depends on plants at some level for their food in the food chain.3. Light. With out the light from the sun, if life did some how manage to exist, it would be pitch black except for the light of distant stars. The moon would obviously be completely dark too.
The energy source that is directly responsible for muscle fiber contraction is?
ATP
Does fiber have sugar and provides quick energy?
Fiber is made of glucose molecules arranged into a starch(cellulose), so they are not a quick source of energy. Humans have difficulty digesting fiber.
What are all muscle cells called?
A single muscle cell is called a muscle fiber.
What is the primary energy source for most animals carbohydrates or proteins or fiber or fats?
Carbohydrates
What is the Smaller fiber in a muscle fiber?
Myofibril
Exercise can do what?
make more muscle fiber
In an fiber optic cabledoes the light energy from the source equal the light energy recovered at the destination?
No, there is some loss during transmission.
What is the term for a Smaller fiber in a muscle fiber?
The smaller fiber in a muscle fiber is called a myofibril. A band of tissue that connects bone to bone is called a ligament.
What is a single muscle called?
a muscle fiber
What is the basic unit of muscle?
muscle fiber
What is the part of the muscle fiber that allows the fiber to contract?
The sacromere with the proteins actin and myosin allow the muscle cell (fiber) to contract.
What are the structures within the muscle fiber that shorten to cause skeletal muscle fiber contraction?
Myofibrils
