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Compact bone is formed from a number of osteons, which are circular units of bone material and blood vessels. Compact bone forms a shell around cancellous bone and is the primary component of the long bones of the arm and leg and other bones, where its greater strength and rigidity are needed. T/F: Spongy bone houses red and yellow bone marrow. In many cases, the inner layer becomes so thin that it’s hard to distinguish from the outer layer of the periosteum. the hard outer layer gives bone its smooth, white, and solid appearance, and accounts for 80% of the total bone mass of an adult skeleton. Moving from outside the bone to inside the bone, here are the layers: Periosteum; Cortical, or Hard Bone; Cancellous, or Spongy Bone; Bone Marrow; Let’s take a closer look. The next layer is made up of compact bone. Compact (cortical) bone: A hard outer layer that is dense, strong, and durable. _____ Compact bone is the hard, outer bone. Which of the following statements about bones is true? Cortical bone tissue gives bone its smooth, dense, solid appearance. The outer layer is a tough membrane called the periosteum, which sheaths most bones. Compact bone is the cylindrical harder outer layer of the bone. This function is supported by the joints created by spongy bone and connective tissues, such as tendons and ligaments. Which of these components gives bone its hardness to resist compression? Spongy bone houses red and yellow bone marrow. The two layers of compact bone and the interior spongy bone work together to protect the internal organs. You broke your arm trying to do a flip off the roof. 5. Multiple choice 1. The cortical bone gives bone its smooth, white, and solid appearance, and accounts … The hard outer layer of bones is composed of cortical bone also called compact bone. This part is smooth and very hard. Compact Bone Tissue Compact bone (or cortical bone) forms the hard external layer of all bones and surrounds the medullary cavity, or bone marrow. It provides protection and strength to bones. A passageway connecting neighboring osteocytes in an osteon is a. Compact bone is the denser, stronger of the two types of bone tissue (Figure \(\PageIndex{6}\)). It accounts for about 80 percent of the total bone mass of the adult skeleton. Compact bone, also known as cortical bone, is a denser material used to create much of the hard structure of the skeleton True or false? A. Osteocytes only exist in cancellous, or spongy bone. Compact bone consists of highly dense, thus hard, white (osseous) tissue, which forms the tough outer shell of the long bones (such as the upper arm or leg bones). Due to the strong nature of compact bone, compared to spongy bone, it is the preferred tissue for strength. In long bones, as you move from the outer cortical compact bone to the inner medullary cavity, the bone transitions to spongy bone. The sponge-like tissue inside bones. _____ Spongy bone houses red and yellow bone marrow. Perforating fibers anchor the endosteum to the superficial surface of a bone. Subchondral tissue. T/F: Spongy bone is composed of spicules called osteons. T/F: Perforating fibers anchor the endosteum to the superficial surface of a bone. 3 The extracellular matrix of bone consists of a. collagen fibers b. calcium hydroxyapatite crystals. The compact bone is the main structure in the body for support, protection, and movement. It can be found under the periosteum and in the diaphyses of long bones, where it provides support and protection. The periosteum is a soft outer covering over the bone’s surface. Take up the quiz below and see how much you know about the bones in the human body. Oxygen reaches individual osteocytes from the blood supply in the central canal via. True. cortical referring to the outer (cortex) layer. Which type of bone makes up the dense, hard, outer shell? F Compact bone is composed of spicules called trabeculae. “Compact Bone.”, Biologydictionary.net Editors. a. the central canal b. canaliculi c. lacunae d. perforating canals 2. The doctor screws it back together B. F Osteoclasts secrete bone matrix F Compact bone is the hard, outer bone. This is often called 'dense' bone. The femur is the strongest bone in the human body. Cancellous (spongy) bone: Some bones have an interior mass of cancellous bone, which is a network of trabeculae (columns) arranged in such a way to reduce stress and pressure on the bone. FALSE-spongy bones. It forms the hard exterior (cortex) of bones. This preview shows page 4 - 5 out of 5 pages. The two types of bone tissue are compact bone and spongy bone. Circumferential lamellae are located between osteons. It makes up around 80 percent of adult bone mass. _____ Osteoclasts secrete bone matrix. What is the composition of the bone matrix? Course Hero is not sponsored or endorsed by any college or university. B. ______ Circumferential lamellae are located between osteons. It makes up around 80 percent of adult bone mass. Compact bone is the hard, outer bone. False. These tissues differ in how dense the bone is, or how tightly the cells are packed together. However, compact bones also serve a function in storing and releasing calcium to the body when needed. Osteocytes are housed within _____ in a compact bone. Sesamoid bones are those bones that are surrounded by te… They are made up of osteons, and they contain high levels of calcium. The structure from which long bones grow in length. There’s no anatomical expression “compact hard bone” that I know of. lateral. FALSE: the fibers anchor the periosteum. When a person steps forward to release a bowling ball, what type of motion of the body is occurring? The compact bone also provide strong mechanical levers, against which the muscles can create movement. On the other hand, spongy bone is softer, and forms the inner layer of bones while covering a large surface area. The hard outer layer of bones is composed of cortical bone, which is also called compact bone as it is much denser than cancellous bone. The epiphyseal plate is. C. Compact bone does not require oxygen, as no cells exist within it. Compact Bone. twisting and stretching when muscles pull on the bone? The classification of a long bone includes having a body that is longer than it is wide, with growth plates (epiphysis) at either end, having a hard outer surface of a compact bone and a spongy inner known a cancellous bone containing bone marrow. It extends from the hip to the knee. _____ Circumferential lamellae are located between osteons. Biologydictionary.net, February 27, 2017. https://biologydictionary.net/compact-bone/. How does this fracture get repaired? ______ Compact bone is the hard, outer bone. There are 3 types of bone tissue, including the following: Compact tissue. Biologydictionary.net Editors. It is also called the cortical bone. The hard outer layer of the bone is made up of the compact cortical bone tissue that gives bone the hard, white, smooth solid appearance. Surrounding the spongy, inner layer is a hard, compact layer that functions as the basic supportive tissue of the body. compact bone. “Compact Bone.” Biology Dictionary. It makes up the outer cortex of all bones and is in immediate contact with the periosteum. It's a thin, dense membrane that contains nerves and blood vessels that nourish the bone. Cancellous tissue. The strongest and densest bones in the body are compact bones. They are made up of two types of bone tissue: spongy and compact. Cancellous tissue. It's the part you see when you look at a skeleton. At the outer edges of compact bone, rather than being arranged in osteons, the osseous tissue is arranged in circumferential lamellae. The ulna is where in relation to the humerus? False. Bone is living tissue that makes up the body's skeleton. ______ Spongy bone houses red and yellow bone marrow. (2017, February 27). Our bones are made of five main layers. Mature compact bone is lamellar, or layered, in structure. compact bone is composed of spicules called trabeculae. 3 Compact bone is the hard outer bone 4 Spongy bone houses red and yellow bone. Compact bone is the hard, outer layer. TRUE. Salt (calcium), collagen and water How do the two main components relate to bone function? The harder, outer tissue of bones. However, compact bones consist of tiny passages for both blood vessels and nerves for the maintenance and repair of the bone. Flat bones, like those of the cranium, consist of a layer of diploë (spongy bone), lined on either side by a layer of compact bone (). Both of them are hard. No, it consist of trabeculae, which are lamellae that arranged as rods or plates 3. TRUE. Spongy bone houses red and yellow bone marrow. 2. Bones make up the human skeletal system and are used to support the body and help provide movement. Spongy bone is composed of spicules called osteons. linear motion. Compact bone, also known as cortical bone, is a denser material used to create much of the hard structure of the skeleton. distal. The smooth tissue at the ends of bones, which is covered with another type of tissue called cartilage. FALSE-interstitial lamellae. The difference between cancellous and cortical bone is mainly density, which affects function. Figure \(\PageIndex{6}\): Diagram of Compact Bone. 1. 4. Spongy bone and compact bone make up the long bones of the human skeleton.Long bones are longer than they are wide, like the tibia and the femur. 3. Compact bone is hard and forms the outer layer of any bone. As seen in the image below, compact bone forms the cortex, or hard outer shell of most bones in the body. Instead, spongy bone is made of multiple tiny beams or rods called trabecula, which provide a rather soft and flexible consistency (like in flat bones such as vertebrae). It has the ability to resist a force of up to 1,800 to 2,500 pounds before it can break. The sponge-like tissue inside bones. Each osteon is also composed of a number of different cells responsible for the maintenance of the bones, including osteocytes and osteoblasts. Compact bone is the denser, stronger of the two types of osseous tissue (Figure 6.3.6). compact bone (harder, located as bone outer layer) Are osteons present in spongy bone? Compact and spongy bones are two types of bones present in a long bone of the human skeleton. In addition to long bones, the four other types of bones in the human skeleton are short bones (the tarsal bones of the wrists and feet), flat bones (skull, rib cage, sternum, scapula), sesamoid bones (knee cap) and irregular bones (). On the other hand, spongy bone is the cuboidal, less dense, osseous tissue found in the inner region of the bone. T/F: Compact bone is the hard, outer bone. The smooth tissue at the ends of bones, which is covered with another type of tissue called cartilage. True or … Retrieved from https://biologydictionary.net/compact-bone/. Osteocytes are housed within _____ in a compact bone. University of California, San Francisco • MISC 0000001. Although bone appears solid, it contains numerous microscopic canals permitting the passage of blood vessels and nerve fibers. The harder, outer tissue of bones. Compact Bone. TRUE. Subchondral tissue. Oh no! Circumferential lamellae are located between osteons. The main function of compact bone is to support the whole body, whereas spongy bones support the body structure. Spongy bone tissue fills part or all of the interior of many bones. Compact bone tissue forms the extremely hard outside layer of bones. Perforating fibers anchor the endosteum to the superficial surface of a bone. If the outer layer of a cranial bone fractures, the brain is still protected by the intact inner layer. Spongy bone is used for more active functions of the bones, including blood cell production and ion exchange. The osteoblasts responsible for making bone cover the fracture with new material C. The bone must be resorbed by the body, and a new bone grown in its place, Biologydictionary.net Editors. Compact bone is sometimes called cortical bone. A compact bone is the hard outer shell of a bone. compact bone is hard, outer bone. Compact bone tissue consists of units called osteons or Haversian systems. A. FALSE: the spicules are called trabeculae. True. Compact bone: The “shell” of each bone is made up of compact bone, which looks like a solid mass. Tendons and ligaments also attach to bones at the periosteum. ECM of bone consists of. Which of these substances gives bone its tensile strength to allow it withstand. FALSE: it is the hard, deep bone. These travel parallel to the outer edge of the bone and are usually only a … There are 3 types of bone tissue, including the following: Compact tissue. 2. The outer surface of the bone is covered with a fibrous membrane called the periosteum (peri – = “around” or “surrounding”). Spongy Bone houses red and yellow bone marrow. Compact bone accounts for more than 75 percent of all bone matter in the body when measured by weight. TRUE. Periosteum. These units allow compact bone to remain hard and compact while still receiving nutrients from the body and disposing of waste through the same channels. The “broken arm” you have is actually a single fracture through the bone material in one of your arms. The remainder of the bone is formed by cancellous or spongy bone. 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