Can you said me the names of bones that are divided into two major groups?
The human skeleton is divided into two major groups of bones:
Axial skeleton: This includes the bones of the head and neck, thorax (chest), and pelvis.
Appendicular skeleton: This includes the bones of the limbs (arms and legs) and the shoulder and hip girdles that attach them to the axial skeleton.
Here are the specific bones that belong to each group:
Axial skeleton:
* Skull: Cranium (braincase), facial bones, and mandible (lower jaw)
* Vertebrae: 33 bones that form the spinal column, including 7 cervical vertebrae in the neck, 12 thoracic vertebrae in the chest, 5 lumbar vertebrae in the lower back, 5 sacral vertebrae fused to form the sacrum, and 4 coccygeal vertebrae at the base of the spine
* Sternum (breastbone): Flat bone in the front of the chest
* Ribs: 12 pairs of long, curved bones that form the rib cage
Appendicular skeleton:
* Shoulder girdle: Clavicle (collarbone) and scapula (shoulder blade)
* Arm: Humerus (upper arm bone)
* Forearm: Ulna and radius (two long bones in the forearm)
* Wrist: 8 carpal bones
* Hand: 5 metacarpal bones (long bones in the palm of the hand) and 14 phalanges (finger bones)
* Hip girdle: Pelvis (composed of the sacrum and two hip bones)
* Thigh: Femur (upper leg bone)
* Leg: Tibia and fibula (two long bones in the leg)
* Ankle: 7 tarsal bones
* Foot: 5 metatarsal bones (long bones in the sole of the foot) and 14 phalanges (toe bones)