Human Skeletal System: Structure and Functions

Human Skeletal System
  • Updated on: May 19, 2024

The human skeletal system is a complex framework that forms the foundation of our body. The adult body comprises 206 bones, which carefully scaffolds into our physical form, supporting living and mobility. The dynamic structure of our body’s skeletal system is both elegant and resilient. According to the Journal of Clinical Anatomy, within the span of 10 years, 15% of our body weight goes through complete alteration. For every bone, a joint and cartilage plays a very important role in sustaining vital life functions. This includes maintaining posture, protecting delicate organs and facilitating movement. 

Our femur is the strongest bone in the body and supports almost all of our body weight. The delicate and tiny bones of our ears facilitate hearing and balance. In this blog, we will be exploring the human skeleton anatomy in-depth. 


What is the function of the skeletal system?


The skeletal system comprises bones, cartilage and connective tissues. It serves as the structural framework for the human body. Beyond just providing shape and support, the skeletal system does way more than you think. It successfully fulfills a multitude of functions efficiently everyday. Below mentioned are the functions of the skeletal system.


  • Support: Bones provide structural support for the body, maintaining its shape and preventing it from collapsing.
  • Protection: The skeletal system safeguards vital organs such as the brain, heart, and lungs from injury or damage. For instance, the skull shields the brain, while the rib cage protects the heart and lungs.
  • Movement: Bones, in conjunction with muscles, facilitate movement by acting as levers and providing attachment points for muscles. Joints enable flexibility and range of motion.
  • Mineral storage: Bones serve as reservoirs for essential minerals such as calcium and phosphorus, which are vital for various physiological processes including muscle contraction and nerve function.
  • Blood cell production: Within the bone marrow, specialized cells produce red blood cells, white blood cells, and platelets through a process called hematopoiesis, crucial for immune function and oxygen transport.
  • Endocrine regulation: Bones secrete hormones such as osteocalcin, which regulates blood sugar levels and influences energy metabolism.


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How does the skeletal system help us in day to day lives?

The skeletal system is more than just a static framework. It encases the vital organs and ensures their effective functioning on a daily basis. From the moment we are born to the time of our death, the skeletal system supports and protects us. 

Here are the ways the skeletal system aids us in our daily life:

  • Mobility: Bones, joints, and muscles work in tandem to facilitate movement, allowing us to walk, run, bend, and perform various tasks throughout the day.
  • Posture: The skeletal system maintains our body’s alignment, supporting proper posture while sitting, standing, and moving, reducing strain on muscles and preventing discomfort.
  • Physical activities: Whether it’s lifting groceries, playing sports, or gardening, the skeletal system provides the necessary framework and leverage for engaging in physical activities.
  • Protection: Bones serve as a protective shield for vital organs, such as the skull guarding the brain and the rib cage shielding the heart and lungs, reducing the risk of injury.
  • Balance and coordination: The skeletal system, along with the vestibular system in the inner ear, contributes to balance and coordination, allowing us to navigate our surroundings safely.
  • Expression: Facial bones and muscles enable a wide range of facial expressions, aiding in communication and social interactions.
  • Independence: A healthy skeletal system supports independence in daily activities, such as dressing, eating, and personal hygiene, enhancing quality of life.


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The human skeletal system is the biological epitome of design and functionality. The significance of the human skeletal system cannot be overemphasized. It facilitates any sorts of movement and provides structural support and protection. 

With the help of bones, joints and connective tissues we engage in various activities that define our lives later on. The human skeletal system and bone anatomy influences our overall health and wellbeing. It helps us stay interconnected and appreciate the opportunities that we get to stand out. As we continue to explore the wonders of our body, let’s care more about the foundational aspect of the skeletal system of our body.