Overview of skeletal system from "summary" of Bd Chaurasia's Human Anatomy, Volume 1 by B. D. Chaurasia
The skeletal system serves as the framework of the human body, providing structure, support, and protection to various internal organs. It is composed of bones, joints, and cartilage, working together to facilitate movement and maintain the body's shape. The bones in the skeletal system are classified into two main types: axial skeleton and appendicular skeleton. The axial skeleton consists of the skull, vertebral column, and rib cage. The skull protects the brain and sensory organs, while the vertebral column supports the body and allows for movement. The rib cage encloses and protects vital organs such as the heart and lungs. These bones are interconnected and work together to maintain posture and protect internal structures. On the other hand, the appendicular skeleton includes the bones of the upper and lower limbs, as well as the shoulder and pelvic girdles. The upper limbs consist of the humerus, radius, ulna, carpals, metacarpals, and phalanges, while the lower limbs consist of the femur, tibia, fibula, patella, tarsals, metatarsals, and phalanges. The shoulder girdle connects the upper limbs to the axial skeleton, while the pelvic girdle connects the lower limbs. Joints play a crucial role in the skeletal system, allowing for movement and flexibility. There are different types of joints, including fibrous joints, cartilaginous joints, and synovial joints. Fibrous joints are immovable and are connected by fibrous tissue. Cartilaginous joints allow for slight movement and are connected by cartilage. Synovial joints are freely movable and contain synovial fluid for lubrication. Cartilage is a connective tissue that covers the ends of bones, providing cushioning and reducing friction between bones at the joints. It is found in areas such as the nose, ears, and joints. The skeletal system also plays a crucial role in the production of blood cells through the bone marrow, which is found in the center of bones.- The skeletal system is essential for the structure, support, and movement of the human body. It is a complex system that works harmoniously with other systems to maintain overall health and functionality.
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