Cartilage And Bone Quiz! Trivia

Compact bone is a type of tissue found in the skeletal system. It is dense and hard, providing strength and support to the bones. Compact bone is composed of cylindrical units called osteons, which contain concentric layers of bone tissue surrounding a central canal that houses blood vessels and nerves. This tissue is responsible for the rigidity and durability of bones, allowing them to withstand mechanical stress and protect internal organs. Compact bone also plays a role in mineral storage, as it contains calcium and phosphate ions that can be released into the bloodstream when needed.

Hyaline cartilage is a type of connective tissue characterized by its clear, glassy appearance under a microscope. It is found in various parts of the body such as the nose, trachea, and ends of long bones. Hyaline cartilage provides support and flexibility to these structures. It is composed of collagen fibers embedded in a gel-like matrix, giving it a smooth and shiny surface. This tissue helps to reduce friction between bones and absorb shock, making it an essential component of joints.

Spongy bone is a type of bone tissue that is characterized by its porous and honeycomb-like structure. It is found at the ends of long bones, in the vertebrae, and in other locations where bones need to be lightweight but still provide support. Spongy bone contains trabeculae, which are small, interconnected plates and rods that give it its sponge-like appearance. This tissue is responsible for providing strength and flexibility to the bone, as well as housing bone marrow and facilitating the exchange of nutrients and waste products.

Reference: This is a slide of hyaline cartilage

Reference: This is compact bone.

Reference: A is elastic cartilage; B is fibrocartilage; C is hyaline cartilage; D is bone.

The correct answer is Chondrocyte. A chondrocyte is a cell found in cartilage tissue. It is responsible for producing and maintaining the extracellular matrix of cartilage. Chondrocytes are surrounded by the matrix and are typically found within small spaces called lacunae. They play a crucial role in cartilage growth, repair, and maintenance.

Canaliculi are the thin lines that the pointer is on. Canaliculi are tiny channels that connect the lacunae (small spaces) within the bone tissue. They allow for communication and exchange of nutrients between osteocytes (bone cells) and the blood vessels within the Haversian canal. Canaliculi play a crucial role in maintaining the health and function of the bone tissue.

Reference: This is a histology slide of elastic cartilage.

Fibrocartilage is a type of connective tissue that is found in areas that require both support and flexibility, such as the intervertebral discs, pubic symphysis, and menisci of the knee. It is composed of dense collagen fibers that provide strength and resilience. Fibrocartilage is able to absorb shock and withstand compression, making it ideal for areas that experience high levels of stress. It also contains chondrocytes, which are responsible for maintaining the extracellular matrix. Unlike hyaline cartilage, fibrocartilage has a more fibrous appearance due to the presence of collagen fibers.

Reference: A is elastic cartilage; B is fibrocartilage; C is hyaline cartilage; D is bone.

Reference: A is elastic cartilage; B is fibrocartilage; C is hyaline cartilage; D is bone.

The correct answer is Osteoblast. Osteoblasts are bone-forming cells that are responsible for the production and secretion of the extracellular matrix of bone tissue. They play a crucial role in bone development and remodeling. Osteoblasts are typically found on the surface of bone and are involved in the mineralization of the bone matrix.

Lacunae are small spaces or cavities within the bone matrix that house osteocytes, which are mature bone cells. These lacunae are interconnected by tiny channels called canaliculi, allowing for communication between the osteocytes. Volkmann's canals, on the other hand, are larger channels that run perpendicular to the long axis of the bone, providing a pathway for blood vessels and nerves. Therefore, the structure at the pointer is the lacunae, which are small spaces within the bone matrix housing osteocytes.

Reference: This is bone.

The correct answer is Elastic cartilage. Elastic cartilage is a type of connective tissue that contains elastic fibers, which provide flexibility and resilience. It is found in structures that require both support and elasticity, such as the external ear and the epiglottis. Unlike fibrocartilage, which is found in areas that require more strength, and hyaline cartilage, which is found in joints and the respiratory tract, elastic cartilage has a greater ability to recoil after being stretched. Compact bone, on the other hand, is a type of dense bone tissue that provides support and protection.

Reference: A is elastic cartilage; B is fibrocartilage; C is hyaline cartilage; D is bone.

The image shows a cross-section of bone tissue, specifically an osteon. The small, dark spaces within the osteon are called lacunae. These spaces house osteocytes, which are mature bone cells responsible for maintaining the bone matrix.