Spongy bone consists of lamellae arranged in an irregular lattice of thin columns called trabecular. Between the trabeculae are spaces that are visible to the unaided eye. These spaces are filled with red bone marrow in bones that produce blood cells, and yellow bone marrow (adipose tissue) in other bones.
Does spongy bone contain osteocytes?
Spongy bone is composed of trabeculae that contain the osteocytes. Red marrow fills the spaces in some bones.
Does spongy bone have osteons?
Spongy bone tissue does not contain osteons that constitute compact bone tissue. Instead, it consists of trabeculae, which are lamellae that are arranged as rods or plates. Red bone marrow is found between the trabuculae. Blood vessels within this tissue deliver nutrients to osteocytes and remove waste.
What is spongy and compact bone made of?
Compact bone is dense and composed of osteons, while spongy bone is less dense and made up of trabeculae. Blood vessels and nerves enter the bone through the nutrient foramina to nourish and innervate bones.
What is produced inside the bone marrow of spongy bone?
Bone marrow is the spongy tissue inside bones that produces blood cells. Bone marrow produces red blood cells, platelets, and white blood cells. Lymphocytes are produced in the marrow, and play an important part in the body’s immune system.
Which type of tissue contains trabeculae?
Spongy bone tissue is composed of trabeculae and forms the inner part of all bones.
What type of cells are made in the spaces of spongy bones?
Spaces between spongy bone remain occupied by red bone marrow tissue. This type of marrow contains stem cells for production of blood cells, specially red blood cells.
Does spongy bone have lacunae?
Like compact bone, spongy bone, also known as cancellous bone, contains osteocytes housed in lacunae, but they are not arranged in concentric circles. Instead, the lacunae and osteocytes are found in a lattice-like network of matrix spikes called trabeculae (singular = trabecula) (Figure 7).
Where are osteocytes found?
Osteocytes (Ot) are located within lacunae surrounded by mineralized bone matrix (B).
Does spongy bone contain red marrow?
Spongy bone is found mostly at the ends of bones and contains red marrow. Bone marrow is found in the center of most bones and has many blood vessels. There are two types of bone marrow: red and yellow. Red marrow contains blood stem cells that can become red blood cells, white blood cells, or platelets.
What are osteons composed of?
osteon, the chief structural unit of compact (cortical) bone, consisting of concentric bone layers called lamellae, which surround a long hollow passageway, the Haversian canal (named for Clopton Havers, a 17th-century English physician).
Does spongy bone have lamella?
Spongy bone tissue does not contain osteons. Instead, it consists of trabeculae, which are lamellae that are arranged as rods or plates.
What minerals make up bone?
Bone composition and structure
The major minerals found in bone are calcium and phosphorus in the form of an insoluble salt called hydroxyapatite [chemical formula: (Ca)10(PO4)6(OH)2]. Hydroxyapatite crystals lie adjacent and bound to the organic protein matrix.
What are the thin plates in spongy bone?
Spongy bone consists of thin, irregularly shaped plates called trabeculae, arranged in a latticework network. Trabeculae are similar to osteons in that both have osteocytes in lacunae that lie between calcified lamellae. As in osteons, canaliculi present in trabeculae provide connections between osteocytes.
Which of the following are components of compact bone?
Terms in this set (4)
osteons. (haversian system), circular unit which is tightly packed together to form bone tissue.lamellae. circular rings of hardended matrix.lacunae. spaces which contain osteocytes (matuer cells)canaliculi.
Where are WBC produced?
A type of blood cell that is made in the bone marrow and found in the blood and lymph tissue. White blood cells are part of the body’s immune system. They help the body fight infection and other diseases.
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.
How is WBC formed?
White blood cells originate from cells that morph into other cells in the body (stem cell) within the soft tissue of your bones (bone marrow).
