A muscular valve is like a strong flap that is capable of opening and closing at will. An example of a muscular valve is the pyloric sphincter.
A example is dead animals
Yes, muscular force is an example of a contact force. It is the force applied by our muscles when they come into contact with an object to either push or pull it.
An example of muscular energy is when you use your leg muscles to pedal a bicycle. The muscles contract and generate energy to move the pedals and propel the bike forward.
In general diseases that attack the muscles are called myopathies. Muscular dystrophy would be one example.
One example would be a "Spanish dancer".
Wrestling is a great example of an organized sport that has a lot of muscular endurance. A few of my friends that wrestle say that it is one of the most difficult, endurance requiring sports they have experienced.
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lifting heavy objects
Lifting a heavy object, such as a box, is an example of muscular force. The muscles in your body contract and exert force to overcome the weight of the object, allowing you to lift it.
The most general function of the muscular system is to help a species move. An example of a muscle is the gastrocnemius which helps in flexing of the knee.
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