Voluntary muscles, also known as skeletal muscles, are muscles that can be consciously controlled, such as the muscles of your limbs, head, neck, and body. They are attached to bones and respond to ...

The diaphragm is primarily composed of muscle and fibrous tissue. The central tendon is a large part of the diaphragm that anchors the diaphragm to the ribs. A healthy person can have some minor ...

A guest essayist said students shouldn’t get an A for simply putting in hard work. We asked teenagers what they thought. By The Learning Network What do you know about the Harlem Renaissance ...