What is the normal number of bones in human body?

An adult human body consists of 206 bones. These bones provide structural support, protection for vital organs, facilitate movement, and produce blood cells. The human skeleton is divided into two main regions: the axial skeleton and the appendicular skeleton.

Axial Skeleton:

1. Skull: 22 bones

- Cranium (8 bones): Frontal bone, Parietal bones (2), Temporal bones (2), Occipital bone, Sphenoid bone, Ethmoid bone

- Facial bones (14 bones): Nasal bones (2), Maxillae (2), Zygomatic bones (2), Lacrimal bones (2), Palatine bones (2), Vomer bone, Mandible

2. Vertebral column (Spine): 33 bones

- Cervical vertebrae (7): Located in the neck

- Thoracic vertebrae (12): Located in the chest area

- Lumbar vertebrae (5): Located in the lower back

- Sacrum (5 fused vertebrae): Located at the base of the spine

- Coccyx (4 fused vertebrae): Located at the tailbone

3. Sternum: 1 bone

- Flat bone that forms the front part of the rib cage

Appendicular Skeleton:

1. Upper limbs (Arms and hands): 30 bones

- Each upper limb consists of:

- Humerus (1 bone): Upper arm bone

- Ulna (1 bone): Inner bone of the forearm

- Radius (1 bone): Outer bone of the forearm

- Carpal bones (8 bones): Wrist bones

- Metacarpal bones (5 bones): Palm bones

- Phalanges (14 bones): Finger bones

2. Lower limbs (Legs and feet): 30 bones

- Each lower limb consists of:

- Femur (1 bone): Thigh bone

- Patella (1 bone): Kneecap

- Tibia (1 bone): Shin bone

- Fibula (1 bone): Outer bone of the lower leg

- Tarsal bones (7 bones): Ankle bones

- Metatarsal bones (5 bones): Foot bones

- Phalanges (14 bones): Toe bones

In summary, the normal number of bones in the human body is 206, consisting of 80 bones in the axial skeleton and 126 bones in the appendicular skeleton. These bones work together to provide structural support, protect vital organs, enable movement, and produce blood cells.