Skeleton Labeled: The human skeleton is formed up of 206 bones. The human skeletal system functions include giving the body with structure, flexibility, protection and to provide attachments for muscles, to produce movement. It further helps in the production of white blood cells and red blood cells. The human skeleton is also a storehouse of minerals and the fat tissues.
Bones of the Body
Skull with Cranium and Mandible
There are 22 bones in the skull. Including the hyoid and the bones of the middle ear, the head comprises 29 bones.
- Occipital bone
- Cranial bones (8)
- Parietal bones (2)
- Frontal bone
- Temporal bones (2)
- Ethmoid bone (counted as facial)
- Sphenoid bone (counted as facial)
- Facial bones (14)
- Nasal bones (2)
- Maxillae (upper jaw) (2)
- Lacrimal bone (2)
- Zygomatic bone or cheekbone (2)
- Palatine bone (2)
- Vomer(1)
- Inferior nasal concha (2)
- Mandible (lower jaw)(1)
- Hyoid bone (not connected, to any other bone)
- Middle ears (6)
- Malleus (2)
- Stapes (2)
Incus (2)
Spine (Vertebral Column)
A fully grown adult has 26 bones in the spine, whereas a child can become 34.
- Cervical vertebrae (7)
- Thoracic vertebrae (12)
- Lumbar vertebrae (5)
- Sacral vertebrae (5 at childbirth, following fused into one)
- The coccygeal vertebrae (5 at birth. It is counted as 1.
Arm
64 bones in the arm.
Upper arm bones (6 bones, 3 on each side)
- Humerus
- Shoulder (pectoral girdle)
- Scapula
- Clavicle
Lower arm bones (4 bones, 2 on each side)
- Ulna
- Radius
Hand Bones (54 bones, 27 in each hand)
- Carpals
- Scaphoid bone (2)
- Lunate bone (2)
- Triquetral bone (2)
- Pisiform bone (2)
- Trapezium (2)
- Trapezoid bone (2)
- Capitate bone (2)
- Hamate bone (2)
- Metacarpals Bones (5 × 2 = 10)
- Phalanges of the hand
- Proximal phalanges (5 × 2 = 10)
- Intermediate phalanges (4 × 2 = 8)
- Distal phalanges (5 × 2 = 10)
Chest (Thorax)
There are regularly 25 bones in the case.
- Sternum (1)
- Ribs (24, in 12 pairs)
Pelvis (Pelvic Girdle) & Leg
The hip bone becomes three regions: ilium, ischium, and the pubis (2)
Leg
- Femur or thigh bone (2)
- Patella or kneecap (2)
- Fibula (2)
- Tibia (2)
The foot (52 bones in whole, 26 per foot)
- Tarsus
- Calcaneus or heel bone (2)
- Navicular bone (2)
- Talus (2)
- Medial cuneiform bone (2)
- Lateral cuneiform bone (2)
- Intermediate cuneiform bone (2)
- Cuboid bone (2)
- Metatarsals (10)
- Phalanges of the foot
- Proximal phalanges (5 × 2 = 10)
- Distal phalanges (5 x 2 = 10)
- Intermediate phalanges (4 x 2 = 8)
Sesamoid Bones
- Pisiform bone
- Patella
- Fabella
- Sesamoids in the first metatarsal bone
- Sesamoids in the first and second metacarpal bones
- The lenticular process of the incus