Cancellous bone, also called trabecular bone or spongy bone, light, porous bone enclosing numerous large spaces that give a honeycombed or spongy appearance . The bone matrix, or framework, is organized into a three-dimensional latticework of bony processes, called trabeculae, arranged along lines of stress.
What is the function of spongy bone?
Spongy bone reduces the density of bone and allows the ends of long bones to compress as the result of stresses applied to the bone . Spongy bone is prominent in areas of bones that are not heavily stressed or where stresses arrive from many directions.
What is spongy bone?
Spongy (cancellous) bone is lighter and less dense than compact bone . Spongy bone consists of plates (trabeculae) and bars of bone adjacent to small, irregular cavities that contain red bone marrow. The canaliculi connect to the adjacent cavities, instead of a central haversian canal, to receive their blood supply.
What is a compact bone?
Compact bone, also called cortical bone, dense bone in which the bony matrix is solidly filled with organic ground substance and inorganic salts , leaving only tiny spaces (lacunae) that contain the osteocytes, or bone cells. ... Both types are found in most bones.
What is spongy bone quizlet?
Spongy Bone. A looser, more porous type of bone tissue found at the inner core of the epiphyses in long bones and all other bone types. Spongy gone is filed with red bone marrow, important in blood cell formation. Diaphysis.
What are examples of spongy bones?
You find cancellous bone in a number of places: the medullary cavity of long bones. And inside short, flat (as pictured above) and irregular bones. Long bone examples are the femur , tibia and humerus . The bones of the skull are flat as well as the sternum.
What causes spongy bones?
Osteomalacia, or “soft bones, ” develops because of a lack of vitamin D . Maintaining your levels of vitamin D and calcium is essential for bone health.
What are the characteristics of spongy bone?
Spongy (cancellous) bone is lighter and less dense than compact bone . Spongy bone consists of plates (trabeculae) and bars of bone adjacent to small, irregular cavities that contain red bone marrow. The canaliculi connect to the adjacent cavities, instead of a central haversian canal, to receive their blood supply.
Is spongy bone soft?
Pores are filled with marrow, nerves, and blood vessels that carry cells and nutrients in and out of the bone. Though spongy bone may remind you of a kitchen sponge, this bone is quite solid and hard, and is not squishy at all. The inside of your bones are filled with a soft tissue called marrow.
What are bone cells called?
Bone is composed of four different cell types; osteoblasts , osteocytes, osteoclasts and bone lining cells. Osteoblasts, bone lining cells and osteoclasts are present on bone surfaces and are derived from local mesenchymal cells called progenitor cells.
What is compact bone characterized by?
Compact bone forms the dense outer shell of bones . It has a smooth and homogeneous appearance. Compact bone is dense and solid in appearance, whereas cancellous (spongy) bone is characterized by open space partially filled with needle-like structures.
Where is the spongy bone found?
Cancellous bone, also known as spongy or trabecular bone, is one of the two types of bone tissue found in the human body. Cancellous bone is found at the ends of long bones, as well as in the pelvic bones, ribs, skull, and the vertebrae in the spinal column .
What is difference between compact bone and spongy bone?
| Compact Bone Structure Spongy Bone Structure | They are made of closely packed osteons. They are composed of minerals containing trabeculae. |
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What are the characteristics of spongy bone quizlet?
Spongy bone tissue is always located in the interior of a bone, protected by a covering of compact bone. It consists of lamellae that are arranged in an irregular pattern of thin columns called trabeculae . Consists of lamellae that are arranged in an irregular pattern of thin columns.
What is the difference between spongy and compact bone quizlet?
What structural differences did you note between compact bone and spongy bone? Compact bone has more bone matrix and less space due to osteons . Spongy bones have less bone matrix and more space due to trabeculae. ... Medullary cavity contains yellow bone marrow, and the spaces of the spongy bone contain red bone marrow.
What are the major structures found in compact bone and spongy bone quizlet?
- Compact Bone. -Most of the skeleton is composed of this. ...
- Osteon (or Haversian system) Basic unit of compact bone. ...
- Central Canal (Haversian) Contains blood vessels and nerves.
- Lamellae. Concentric rings of matrix.
- Osteocytes. Mature Bone cells.
- Lacunae. ...
- Canaliculi. ...
- Perforating canals.
