The cells of compact bone, which is also called cortical bone, appear to be tightly packed into a solid mass. The spongy bone has red bone marrow which is used in erythropoiesis. Cortical bone, or compact bone, is the hard part of human bone tissue, and it makes up about 80 percent of the weight of a human skeleton. Elementary cylindrical structure of the compact bone made up of four to 20 concentric bone … C. Compact bone does not require oxygen, as no cells exist within it. n. 1. a. cortical bone the compact bone of the shaft of a bone that surrounds the marrow cavity. Cancellous bone has a higher surface-area-to-volume ratio than cortical bone and it is less dense.This makes it weaker and more flexible. The human body has more than 200 bones. Bone in which the spicules form a latticework, with interstices filled with embryonic connective tissue or bone marrow.cancellous bone spongy substance trabecular bone Any of the turbinate bones. Spongy bone, also called cancellous bone, appears to have large open spaces and resembles a sponge. This function is supported by the joints created by spongy bone and connective tissues, such as tendons and ligaments. Cancellous bone, also called trabecular or spongy bone, is the internal tissue of the skeletal bone and is an open cell porous network. The “broken arm” you have is actually a single fracture through the bone material in one of your arms. Compact bone is made up of primarily of fat in its medullar cavity, and it stores yellow bone marrow. Humans and many other animals have a skeletal system made up of hard pieces called bones. For mechanical reasons, and because there is a poorer blood supply to cortical bone than to the cancellous bone of the epiphyses, the course of events following osteonecrosis differs in the two types of bone. A. Two types of bone are present in most bones: compact, which constitutes the shaft, and cancellous, an extremely strong variety which makes up the enlarged ends of the bone. Cancellous bone is the spongy interior layer of bone that protects the bone marrow.It is also be called a spongy bone or trabecular bone. Compact bone is formed from a number of osteons, which are circular units of bone material and blood vessels. Medical Definition of compact : having a dense structure without small cavities or cells compact bone — compare cancellous Keep scrolling for more Omissions? 3-D printing makes glass implant strong enough for load-bearing fractures possible Oh no! Bones are a type of living tissues, consisting of blood vessels and cells. As seen in the image below, compact bone forms the cortex, or hard outer shell of most bones in the body. It is also known as Cortical Bone. The key difference between compact bone and spongy bone is that the compact bone is a tough and heavy bone that forms the diaphysis of long bones while the spongy bone is a soft and light bone that forms the epiphysis of long bones.. Bones are hard organs inside our bodies that make up our skeletal system. A. Osteocytes only exist in cancellous, or spongy bone. Compact (cortical) bone: A hard outer layer that is dense, strong, and durable. Which of the following statements about bones is true? Visit BYJU’S to learn more differences. The compact noncancellous portion of bone that consists largely of concentric lamellar osteons and interstitial lamellae. The doctor screws it back together B. compact bone bone substance that is dense and hard. Biologydictionary.net, February 27, 2017. https://biologydictionary.net/compact-bone/. Structure of Bone Tissue. Compact bone appears solid and spongy bone consists of a web- or sponge-like arrangement of solidified extracelluar matrix. Compact bone tissue consists of osteons that are aligned parallel to the long axis of the bone, and the Haversian canal that contains the bone’s blood vessels and nerve fibers. As seen in the image below, compact bone forms the cortex, or hard outer shell of most bones in the body. 2. It makes up the outer cortex of all bones and is in immediate contact with the periosteum. Cortical bone is also called compact or lamellar bone and provides strength to all the long bones of the body, for example, femur. A compact bone is the hard outer shell of a bone. In other terms, they are the cortical bones; the densest and strongest bones in the body. For healthy maintenance of the bone, compact bones possess small passages for nerves and blood vessels. Compact bone is the cylindrical harder outer layer of the bone. (2017, February 27). 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