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  1. Bone - Wikipedia

    Bone tissue comprises cortical bone and cancellous bone, although bones may also contain other kinds of tissue including bone marrow, endosteum, periosteum, nerves, blood vessels, and cartilage. In the …

  2. Bone | Definition, Anatomy, & Composition | Britannica

    Dec 27, 2025 · Bone is a rigid body tissue consisting of cells embedded in an abundant hard intercellular material. Bone tissue makes up the individual bones of the skeletons of vertebrates. Its two principle …

  3. Bones: How Many Do Humans Have, Types, Anatomy & Function

    Bones are your body’s structural support. There are between 206 and 213 bones in the body. Bone tissue is strong enough to support your weight and help you move.

  4. What Is Bone? | NIAMS

    Each bone has two types of bone tissue to ensure strength: The dense, hard outer layer is called compact or cortical bone while the inner, less dense, lattice-like bone is called cancellous, trabecular …

  5. Anatomy of the Bone - Johns Hopkins Medicine

    Bones are classified by their shape. They may be long (like the femur and forearm), short (like the wrist and ankle), flat (like the skull), or irregular (like the spine). Primarily, they are referred to as long or …

  6. Bone Anatomy | Ask A Biologist

    Feb 4, 2011 · About 80% of the bone in your body is compact. It makes up the outer layer of the bone and also helps protect the more fragile layers inside. If you were to look at a piece of compact bone …

  7. Bones - Bone, Joint, and Muscle Disorders - Merck Manual Consumer Version

    Bones are rigid structures that form the framework of the body and protect delicate internal organs. They contain the bone marrow, where the blood cells are formed. Bones also maintain the body's supply of …

  8. Bone Health In Depth | Linus Pauling Institute

    Apr 19, 2019 · There are two types of bone tissue: cortical (compact) bone and trabecular (spongy or cancellous) bone. Eighty percent of the skeleton is cortical bone, which forms the outer surface of all …

  9. 11.4 Structure of Bone – Human Biology

    The two different types of osseous tissue are compact bone tissue (also called hard or cortical bone) and spongy bone tissue (also called cancellous or trabecular bone).

  10. Bone Basics: How Many Bones Are in the Human Body? - UC Davis

    Sep 30, 2025 · Did you know? At birth, babies have around 300 bones. But by the time we reach adulthood, we’re left with 206 bones. UC Davis answers top bone questions.