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Long bones are hard, dense bones that provide strength, structure, and mobility. The thigh bone (femur) is a long bone. A long bone has a shaft and two ends. Some bones in the fingers are classified as long bones, even though they are short in length.

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Femur, aka the thighbone, upper bone of the leg or hind leg. The head forms a ball-and-socket joint with the hip (at the acetabulum), being held in place by a ligament (ligamentum teres femoris) within the socket and by strong surrounding ligaments.

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The line of junction of the epiphysis and diaphysis of a long bone where growth in length occurs.

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Articular cartilage is the smooth, white tissue that covers the ends of bones where they come together to form joints. Healthy cartilage in our joints makes it easier to move. It allows the bones to glide over each other with very little friction. Articular cartilage can be damaged by injury or normal wear and tear.

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Spongy bone, also known as cancellous bone or trabecular bone, is a very porous type of bone found in animals. It is highly vascularized and contains red bone marrow. Spongy bone is usually located at the ends of the long bones (the epiphyses), with the harder compact bone surrounding it.

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The medullary cavity (medulla, innermost part) is the central cavity of bone shafts where red bone marrow and/or yellow bone marrow (adipose tissue) is stored; hence, the medullary cavity is also known as the marrow cavity.

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All bones possess larger or smaller foramina (openings) for the entrance of blood-vessels; these are known as the nutrient foramina, and are particularly large in the shafts of the larger long bones, where they lead into a nutrient canal, which extends into the medullary cavity.

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A thin vascular membrane of connective tissue that lines the inner surface of the bony tissue that forms the medullary cavity of long bones. This endosteal surface is usually resorbed during long periods of malnutrition, resulting in less cortical thickness.

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a dense layer of vascular connective tissue enveloping the bones except at the surfaces of the joints.

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The diaphysis is the main or midsection (shaft) of a long bone. It is made up of cortical bone and usually contains bone marrow and adipose tissue (fat).

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The Epiphysis is the end part of a long bone, initially growing separately from the shaft. It is also another term for pineal.

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bone marrow that is yellow with fat; found at the ends of long bones in adults

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1.Where is the femur bone located?
2.What in our joints make it easier to move?
3.True or false. The Ephiphyseal line occurrs where the growth does
4.What is the spongy bone also known as?
5.what is the central cavity of bone shafts  called?
6.true or false periosteum is a dense layer of vascular connective tissue enveloping the bones except at the surfaces of the joints.
7.what is the main or midsection (shaft) of a long bone called?
8.true or false endosteum lines the inner surface of the bony tissue
9.true or false All bones possess larger or smaller foramina (openings) for the entrance of blood-vessels;
10.Which bone marrow is required for the formation for red blood cells?

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bone marrow of children and some adult bones that is required for the formation of red blood cells