What is the primary structural unit of compact bone called?

What is the primary structural unit of compact bone called?

• A. Haversian system
• B. Trabecular matrix
• C. Bone matrix
• D. Osteonic unit

Answer: (A)

The primary structural unit of compact bone is known as the Haversian system, which plays a crucial role in the overall architecture and function of bone. The Haversian system, also referred to as an osteon, consists of a central canal surrounded by concentric layers of mineralized matrix, known as lamellae. This organization allows for effective strength and support, as well as the efficient transportation of nutrients and waste products via the central canal, which houses blood vessels and nerves. Within the Haversian system, the compact structure ensures that bone can withstand compressive forces. Each osteon is interconnected through small channels called canaliculi, which facilitate communication and nutrient exchange between osteocytes, the bone cells embedded in the matrix. Other options present definitions related to bone structure but are not the primary structural unit of compact bone. The trabecular matrix refers to spongy or cancellous bone, which differs in structure and function from compact bone. The bone matrix is a term that encompasses all types of bone tissue and its components, and osteonic unit is another term that can refer to the Haversian system but is less commonly used. Thus, the Haversian system clearly stands out as the correct answer, highlighting its significance in bone

The primary structural unit of compact bone is known as the Haversian system, which plays a crucial role in the overall architecture and function of bone. The Haversian system, also referred to as an osteon, consists of a central canal surrounded by concentric layers of mineralized matrix, known as lamellae. This organization allows for effective strength and support, as well as the efficient transportation of nutrients and waste products via the central canal, which houses blood vessels and nerves.

Within the Haversian system, the compact structure ensures that bone can withstand compressive forces. Each osteon is interconnected through small channels called canaliculi, which facilitate communication and nutrient exchange between osteocytes, the bone cells embedded in the matrix.

Other options present definitions related to bone structure but are not the primary structural unit of compact bone. The trabecular matrix refers to spongy or cancellous bone, which differs in structure and function from compact bone. The bone matrix is a term that encompasses all types of bone tissue and its components, and osteonic unit is another term that can refer to the Haversian system but is less commonly used. Thus, the Haversian system clearly stands out as the correct answer, highlighting its significance in bone