Skeletal system
Skeletal system
Bones, their landmarks, and the joints between them.
36 structures
Upper limb
9Clavicle
Collarbone — the strut of the shoulder
BoneHumerus
Bone of the arm
BoneLunate
Moon-shaped carpal bone
BoneMetacarpals
Five bones of the palm
BoneRadius
Lateral forearm bone
BoneScaphoid
Boat-shaped carpal bone
BoneScapula
Shoulder blade
BoneTrapezium
Carpal bone at the thumb base
BoneUlna
Medial forearm bone
BoneLower limb
8Calcaneus
Heel bone — largest tarsal bone
BoneFemur
Thigh bone — longest, strongest bone
BoneFibula
Lateral leg bone
BoneHip bone (os coxae)
Ilium + ischium + pubis
BoneMetatarsals
Five bones of the forefoot
BonePatella
Kneecap — largest sesamoid bone
BoneTalus
Ankle bone transmitting body weight
BoneTibia
Shin bone — weight-bearing leg bone
BoneTrunk
8Atlas (C1)
First cervical vertebra
BoneAxis (C2)
Second cervical vertebra
BoneSacrum
Five fused vertebrae
BoneSternum
Breastbone
BoneTypical cervical vertebra
C3–C6
BoneTypical lumbar vertebra
L1–L5
BoneTypical rib
Curved flat bone of the thorax
BoneTypical thoracic vertebra
T2–T9
BoneHead & neck
11Ethmoid bone
Between the orbits and nose
BoneFrontal bone
Forehead and orbital roofs
BoneHyoid bone
Free-floating bone of the neck
BoneMandible
Lower jaw — only mobile skull bone
BoneMaxilla
Upper jaw
BoneNasal bone
Bridge of the nose
BoneOccipital bone
Back and base of the skull
BoneParietal bone
Roof and sides of the cranium
BoneSphenoid bone
Keystone of the cranial base
BoneTemporal bone
Houses the ear
BoneZygomatic bone
Cheekbone
Bone