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Introduction to the Biology of Muscles and Bones

By

The Manual's Editorial Staff

Last full review/revision May 2020
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What are muscles and bones?

  • Bones: Your skeleton

  • Muscles: Tissue that contracts to move parts of your body

  • Joints: Places where two bones meet

  • Cartilage: Smooth, rubbery tissue that lines the inside of joints to reduce friction

  • Tendons: Tough ropes of tissue that connect your muscles to your bones

  • Ligaments: Tough bands of tissue that hold joints together

Your body has hundreds of different muscles and bones. Some are very large, such as the large muscles and bone in your thigh. Others are very small, such as the muscles and bones in your fingers.

Tendons and ligaments are called connective tissue because they connect parts of your body together.

Musculoskeletal System (1)

Musculoskeletal System (1)

Musculoskeletal System (2)

Musculoskeletal System (2)
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Swelling
Swelling is a condition caused by excess fluid in the tissues. The fluid involved in swelling is primarily water. Swelling may occur in one or several parts of the body, often the feet and lower legs. Swelling that occurs throughout the body has different causes than swelling in a single limb or part of a limb. Which of the following is a frequent cause of swelling in a single limb or part of a limb?
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