Skeletal system
Skeletal system
Bones, their landmarks, and the joints between them.
36 structures
Upper limb
9Clavicle
Bony support between chest and shoulder
BoneHumerus
Long bone linking shoulder and elbow
BoneLunate
Central bone of the proximal wrist row
BoneMetacarpals
Numbered supports of the palm
BoneRadius
Forearm bone on the thumb side
BoneScaphoid
Carpal link on the thumb side of the wrist
BoneScapula
Mobile platform for the shoulder muscles
BoneTrapezium
Wrist bone supporting the thumb base
BoneUlna
Forearm bone on the little-finger side
BoneLower limb
8Calcaneus
Large tarsal bone forming the heel beneath the talus
BoneFemur
Long thigh bone carrying load between hip and knee
BoneFibula
Slender lateral leg bone contributing to ankle stability
BoneHip bone (os coxae)
Fused ilium, ischium and pubis forming one side of the pelvis
BoneMetatarsals
Five long bones connecting the tarsus with the toes
BonePatella
Sesamoid kneecap improving the quadriceps' mechanical advantage
BoneTalus
Hindfoot bone linking the ankle with the foot below
BoneTibia
Main load-bearing bone on the medial side of the leg
BoneThorax
2Pelvis
1Back
5Atlas (C1)
Ring-shaped first neck vertebra supporting the skull
BoneAxis (C2)
Second neck vertebra providing the dens for head rotation
BoneTypical cervical vertebra
Usual neck-vertebra pattern, represented by C3–C6
BoneTypical lumbar vertebra
Large lower-back vertebra adapted for substantial loading
BoneTypical thoracic vertebra
Rib-bearing vertebra, best illustrated in the middle thoracic region
BoneHead & neck
11Ethmoid bone
Thin partitions between the nose, orbits and cranium
BoneFrontal bone
Forehead, orbital roofs and anterior cranial floor
BoneHyoid bone
Suspended anchor for tongue and laryngeal movement
BoneMandible
Movable lower jaw
BoneMaxilla
Upper-jaw framework for teeth, palate and orbit
BoneNasal bone
Paired bony bridge above the nasal cartilages
BoneOccipital bone
Posterior skull base around the foramen magnum
BoneParietal bone
Curved plates protecting the upper and lateral brain
BoneSphenoid bone
Central skull-base bone with major nerve passages
BoneTemporal bone
Skull-base housing for the ear and facial nerve
BoneZygomatic bone
Cheek prominence and outer orbital support
Bone