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The low back, or lumbar spine, is composed of 5 bones that are stacked one upon another. Between the bones is a soft spongy disc. The spinal cord and nerves are. Information about bone cancer and tumors from the U.S. National Cancer Institute. The skeletal system gives the body its basic framework, providing structure, protection, and movement. The 206 bones in the body also produce blood cells, store. This image has been selected, edited, and approved by Editor at PathPedia. Bone sarcomas. The second large group of sarcoma is bone sarcomas or bone cancer. There are three types of bone sarcoma: osteosarcoma; Ewing’s sarcoma; and. Learn how meningiomas, or meningioma tumors are successfully treated at Skull Base Institute using minimally invasive, endoscopic techniques. Recover faster with less.
The Human Spleen. The spleen is a brown, flat, oval- shaped lymphatic organ that filters and stores blood to protect the body from infections and blood loss. Protected by our ribs, the spleen is located between the stomach and the diaphragm in the left hypochondriac region of the abdominal body cavity. The splenic artery branches off from the aorta and the celiac trunk to deliver oxygenated blood to the spleen, while the splenic vein carries deoxygenated blood away from the spleen Continue Scrolling To Read More Below.. Top Free Dating In Uk on this page. Continued From Above.. A tough connective tissue capsule surrounds the soft inner tissue of the spleen.
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Spongy inner tissue within the spleen contains many tiny blood vessels and hollow sinuses that store blood. The spleen can release its stored blood into circulation to replace blood lost during a traumatic injury. Many platelets are also stored with the blood in the spleen to help form blood clots to prevent further blood loss. Around the vessels and sinuses of the spleen are regions of red pulp and white pulp with a marginal zone in between. The red pulp regions contain many net- like reticular fibers that filter worn- out red blood cells from the blood flowing through the spleen. Captured red blood cells are digested to recycle the iron and protein components of hemoglobin.
The marginal zone between the red and white pulp acts as a filter to capture pathogens in the blood and pass these pathogens on to the white pulp. White pulp regions of the spleen are made of lymphatic tissue containing macrophages, T lymphocytes, and B lymphocytes that destroy pathogens in the blood and produce antibodies. The spleen may enlarge during certain infections due to an increase in the number of white blood cells, captured pathogens and antibodies inside the spleen. The spleen is not a vital organ — its functions are useful but not essential for life. Red bone marrow, the liver, and lymph nodes can complete the filtration and blood recycling functions of the spleen in its absence. Because it is not a vital organ and is so soft, spongy, and vascular, damage to the spleen is almost always treated by its complete removal.
Untreated damage to the spleen can quickly lead to massive internal hemorrhaging and eventual death. Prepared by Tim Taylor, Anatomy and Physiology Instructor.
Skeletal System Anatomy, Diagram & Function. Although a skeleton sometimes symbolizes death and creepy. Unlike other. living organs, bones are firm and strong, but they have their own blood, lymphatic. There are two types of tissue inside bones: Compact. This hard and dense tissue makes up the outer layer of most bones and. Nerves and. blood vessels live inside this tissue.
Spongy. bone: This tissue is made up of smaller plates filled with red bone marrow. It is found at the ends of long bones, like the head of the femur, and at the.
Red bone marrow. forms most of the blood cells in the body and helps destroy old blood cells. Another type of marrow, yellow bone. New Dating Sites In London more. It is mostly made up. However, if the body suffers large amounts of blood loss, it can.
The skull consists. Twenty- one. of those bones are fused together by sutures, nearly rigid fibrous joints. The. lower- most bone of the skull is the mandible.
The spine, or vertebral. At birth, humans have 3. But bones fuse as. The rib cage is. made up of 1. The bones. curve from the back at the vertebral column to the front of the body. The upper. seven pairs meet with the sternum, or chest bone. The remaining five pairs are.
The muscles of the shoulders and arms include the clavicle (collarbone), scapula (shoulder blade), humerus, radius, ulna, and the. The hip bones are.
These form the majority. The. sacrum—five fused bones and at the bottom of the spine—and the coccyx, or. The head of the femur. It begins the bones of the leg. The other bones of the leg include the tibia. The most common condition that affects bones is fracture, or.
Other common conditions that affect the skeletal system. Osteoporosis. This is a disease in which the bones become fragile and prone to fracture. Leukemia. This is a cancer of the white blood cells. Osteopenia. osteitis deformans, and osteomalacia: Similar to osteoporosis. Scoliosis. kyphosis, and lordosis: These are abnormalities of the spinal curve.