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Muscles on the Move
Facial muscles
There are about 30 different muscles in your face.
Most facial muscles are attached to each other or to the skin, not to
bone. The facial muscles control a variety of movements. When you
raise your eyebrows, wrinkle your forehead, close your eyes, or smile,
your facial muscles are at work.
Neck muscles
Muscles in the neck must be very strong. They
have to keep the head upright. An adult human head weighs about
4.5 kilograms (kg).
Hand muscles
Each hand has about 20 different
muscles. With so many muscles, the hand can move
in a variety of ways.
Abdominal muscles
Your abdominal muscles
allow you to twist and bend your body. They also
help you inhale and exhale.
Gluteus maximus
The gluteus maximus
is the largest muscle in your body. It is
also one of the strongest. This big
muscle helps you run, jump, and climb.
It’s also the muscle on which you sit!
Leg muscles
The muscles in your thigh
bend, straighten, and twist both your hip
and your knee. The muscles in your calf
allow you to bend, straighten, and
twist your ankle.
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