Anatomy Lecture Test 2

Osteocytes are bone cells that are responsible for maintaining bone tissue. They are found within the bone matrix and play a crucial role in bone remodeling and repair. Osteocytes are involved in the regulation of bone density and mineral homeostasis. They communicate with each other and with other bone cells through small channels called canaliculi, allowing for the exchange of nutrients and waste products. Osteocytes also have mechanosensory functions, detecting and responding to mechanical forces and stress on the bone. Overall, osteocytes are vital for the maintenance and health of bone tissue.

The term "avascular" means lacking blood vessels. In the context of the question, it suggests that the given entity or structure is not associated or supplied by blood vessels. This term is often used to describe tissues or regions of the body that do not have a direct blood supply.

Cartilage is a flexible connective tissue that is found in various parts of the body. It acts as a cushion and provides support to different structures. Joints, nose, and ribs all contain cartilage. However, ligaments are not a location of cartilage. Ligaments are fibrous tissues that connect bones to other bones and do not contain cartilage.

Collagenous protein fibers are responsible for providing support to various tissues and organs in the body. These fibers are strong and flexible, allowing them to maintain the structural integrity and shape of tissues. They form a network that helps in holding cells together and providing support to the surrounding structures. Collagenous protein fibers are particularly important in connective tissues, such as tendons, ligaments, and cartilage, where they provide strength and stability. Therefore, the function of collagenous protein fibers is support.

Chondrocytes are specialized cells that produce large amounts of extracellular matrix composed of collagen. Collagen is a fibrous protein that provides strength and support to tissues. Chondrocytes are found in cartilage, which is a connective tissue that cushions and protects joints. They play a crucial role in maintaining the structure and function of cartilage by producing and maintaining the extracellular matrix. Therefore, chondrocytes are the correct answer as they are specifically responsible for producing collagen-rich extracellular matrix in cartilage.