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There are two types of muscle fibers, fast-twitch and slow-twitch. Each muscle is a combination of different proportions of these fibers. Muscles in different people have different compositions, which is why some athletes are better marathon runners, while others are better sprinters.
What else can I help you with?
Does the nervous system transmit information that tells your muscle and otherinternal organs how to react?
The nervous system does not tell muscles how to react. The nerves transmit electrical pulses that make muscles contract. Different nerves attached to different muscles strands control how a muscle reacts. For example, nerves going to some arm muscles when they contract may make your elbow bend. Nerves going to a different set of muscles when made to contract may make your arm straighten out at the elbow. Using all muscles in that area allows you to maintain a bent elbow in a specific position.
What muscles react very quickly?
Skeletal muscles react very quickly of all three muscle type, probably.
What speeds up the rate that chemicals will react?
Catalysts.
Is a species which speeds up chemical reactions but does not react itself?
cameral
Is the following sentence true or false skeletal muscles react quickly and tire easily?
its false... skeletal muscles cannot react quickly and they don't tire easily...
How might smooth muscles react slowly and tire slowly be an advantage for smooth muscles?
it makes it tight
How do astronomers know the sun's surface rotates at different speeds?
Sunspots rotate at different speeds.
What happens to your breathing when you excerise?
Your breathing speeds up when you exercise in order to get oxygen to your muscles and heart.
Why does speed travel at different speeds in different liquids?
no
How different kinds of muscles work effectively and efficiently?
Muscles are supplied by different nerves and they are placed at different parts of the body. But all the muscles are controlled by brain only. It regulates the movement of all muscles. It means contraction of muscles are relaxation of reciprocal muscles in controlled manner.
What happens when you create overload on a body system?
muscles react,which means they increase in size
Why is the reflex arc important to protect the body?
because it makes you react quickly by using fast twitch fibres in your body which makes your muscles react.
