Number of bones present in human is

The correct answer is 206.

Key Points

• The adult human skeletal system consists of 206 bones, which provide structure, protection, and mobility to the body.
• At birth, humans have around 270 bones, but some of these fuse together as they grow.
• The bones are categorized into two main groups: axial skeleton (80 bones) and appendicular skeleton (126 bones).
• The axial skeleton includes the skull, vertebral column, and rib cage, while the appendicular skeleton consists of the limbs and girdles.
• The largest bone in the human body is the femur (thigh bone), and the smallest is the stapes bone in the middle ear.

Additional Information

• Bone Composition:
  • Human bones are made of living tissues, primarily a matrix of collagen fibers and calcium phosphate.
  • This composition provides bones with both strength and flexibility.
• Types of Bones:
  • Bones are classified into five types: long bones, short bones, flat bones, irregular bones, and sesamoid bones.
  • Examples include the femur (long bone), carpals (short bones), and scapula (flat bone).
• Bone Marrow:
  • Bones contain bone marrow, which produces red blood cells, white blood cells, and platelets.
  • There are two types of bone marrow: red marrow (active in blood cell production) and yellow marrow (stores fat).
• Bone Remodeling:
  • Bones are dynamic tissues that undergo constant remodeling through the activity of osteoblasts (bone formation) and osteoclasts (bone resorption).
  • This process helps repair micro-damages and regulates calcium levels in the body.
• Common Bone Disorders:
  • Examples include osteoporosis (weak and brittle bones), arthritis (inflammation of joints), and fractures caused by trauma or stress.
  • Bone health can be maintained through proper nutrition (calcium and vitamin D) and regular exercise.